Product features
Illustrated parts catalog
- Desktop Mini (DM) chassis spare parts
Routine care, SATA drive guidelines, and disassembly preparation
Removal and replacement procedures – desktop mini (DM) chassis
Computer Setup (F10) Utility
- Computer Setup (F10) Utilities
- Recovering the Configuration Settings
Troubleshooting without diagnostics
POST error messages and diagnostic front panel LEDs and audible codes
- POST numeric codes and text messages
- Interpreting system validation diagnostic front panel LEDs and audible codes
Password security and resetting CMOS
- Resetting the password jumper
- Clearing and resetting the BIOS
Using HP PC Hardware Diagnostics (UEFI)
- Downloading HP PC Hardware Diagnostics (UEFI) to a USB device
System backup and recovery
Power Cord Set Requirements
Statement of Volatility
Specifications
Index

HP 600 G2 DM User Manual

Displayed below is the user manual for 600 G2 DM by HP which is a product in the PCs/Workstations category. This manual has pages.

Related Manuals

HP 600 G2 SFF Manual

HP 600 G2 Manual

Maintenance and Service Guide

HP EliteDesk 800 G2 Desktop Mini

HP EliteDesk 705 G2 Desktop Mini

HP ProDesk 600 G2 Desktop Mini

HP ProDesk 400 G2 Desktop Mini

HP MP9 G2 Retail System

L.P.

AMD is a trademark of Advanced Micro Devices,

Inc. Bluetooth is a trademark owned by its

proprietor and used by HP Inc. under license.

Intel, Celeron, and Pentium are trademarks of

Intel Corporation in the U.S. and other

countries. Microsoft and Windows are

trademarks of the Microsoft group of

companies.

The information contained herein is subject to

change without notice. The only warranties for

HP products and services are set forth in the

express warranty statements accompanying

such products and services. Nothing herein

should be construed as constituting an

additional warranty. HP shall not be liable for

technical or editorial errors or omissions

contained herein.

First Edition (October 2015)

Document Part Number: 822871-001

Product notice

This user guide describes features that are

common to most models. Some features may

not be available on your computer.

Not all features are available in all editions of

Windows. This computer may require upgraded

and/or separately purchased hardware, drivers

and/or software to take full advantage of

Windows functionality. Go to

http://www.microsoft.com for details.

Software terms

By installing, copying, downloading, or

otherwise using any software product

preinstalled on this computer, you agree to be

bound by the terms of the HP End User License

Agreement (EULA). If you do not accept these

license terms, your sole remedy is to return the

entire unused product (hardware and software)

within 14 days for a full refund subject to the

refund policy of your seller.

For any further information or to request a full

refund of the price of the computer, please

contact your seller.

Safety warning notice

WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place

the device directly on your lap or obstruct the device air vents. Use the device only on a hard, at surface. Do

not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs

or clothing, to block airow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as

pillows or rugs or clothing, during operation. The device and the AC adapter comply with the user-accessible

surface temperature limits dened by the International Standard for Safety of Information Technology

Equipment (IEC 60950).

iii

iv Safety warning notice

Table of contents

1 Product features ........................................................................................................................................... 1

Standard conguration features ........................................................................................................................... 1

Front panel components (EliteDesk 800, ProDesk 600, and HP MP9) ................................................................. 1

Front panel components (EliteDesk 705 and ProDesk 400) ................................................................................. 2

Rear panel components (EliteDesk 800, EliteDesk 705, ProDesk 600, and HP MP9) .......................................... 3

Rear panel components (ProDesk 400) ................................................................................................................. 4

Serial number location .......................................................................................................................................... 5

2 Illustrated parts catalog ................................................................................................................................ 6

Desktop Mini (DM) chassis spare parts .................................................................................................................. 6

Computer major components ............................................................................................................. 6

Cables .................................................................................................................................................. 8

Misc parts ............................................................................................................................................. 9

Drives ................................................................................................................................................. 11

3 Routine care, SATA drive guidelines, and disassembly preparation .................................................................. 12

Electrostatic discharge information .................................................................................................................... 12

Generating static ............................................................................................................................... 12

Preventing electrostatic damage to equipment ............................................................................... 13

Personal grounding methods and equipment .................................................................................. 13

Grounding the work area ................................................................................................................... 13

Recommended materials and equipment ........................................................................................ 14

Operating guidelines ........................................................................................................................................... 14

Routine care ......................................................................................................................................................... 15

General cleaning safety precautions ................................................................................................ 15

Cleaning the Computer Case ............................................................................................................. 15

Cleaning the keyboard ....................................................................................................................... 15

Cleaning the monitor ......................................................................................................................... 16

Cleaning the mouse ........................................................................................................................... 16

Service considerations ......................................................................................................................................... 16

Tools and software Requirements .................................................................................................... 16

Screws ............................................................................................................................................... 16

Cables and connectors ...................................................................................................................... 17

Hard Drives ........................................................................................................................................ 17

Lithium coin cell battery .................................................................................................................... 17

SATA hard drives .................................................................................................................................................. 17

SATA hard drive cables ......................................................................................................................................... 18

SATA data cable ................................................................................................................................. 18

SMART ATA drives ................................................................................................................................................ 18

Cable management .............................................................................................................................................. 19

4 Removal and replacement procedures – desktop mini (DM) chassis .................................................................. 20

Preparation for disassembly ............................................................................................................................... 20

Top cover .............................................................................................................................................................. 21

Front bezel ........................................................................................................................................................... 22

Hard drive ............................................................................................................................................................. 23

Secondary fan (EliteDesk 800 and MP9 models only) ........................................................................................ 26

Drive cage ............................................................................................................................................................ 27

M.2 PCIe solid state drive (SSD) ........................................................................................................................... 28

WLAN module ...................................................................................................................................................... 30

External antenna ................................................................................................................................................. 32

RTC battery .......................................................................................................................................................... 34

Thermal sensor .................................................................................................................................................... 36

Fan ........................................................................................................................................................................ 37

Power switch/light cover ..................................................................................................................................... 38

Memory ................................................................................................................................................................ 39

SODIMMs ............................................................................................................................................ 39

SODIMM specications ...................................................................................................................... 39

Populating SODIMM sockets ............................................................................................................. 40

Replacing SODIMMs ........................................................................................................................... 41

Heat sink .............................................................................................................................................................. 43

Processor – Intel models ..................................................................................................................................... 45

Speaker ................................................................................................................................................................ 47

Expansion connector board ................................................................................................................................. 48

System board ....................................................................................................................................................... 49

System board callouts, EliteDesk 800, ProDesk 600, and HP MP9 Retail System ........................... 51

System board callouts, EliteDesk 705 .............................................................................................. 52

System board callouts, ProDesk 400 ................................................................................................ 53

Internal WLAN antenna cable removal/installation ............................................................................................ 54

Changing from desktop to tower conguration .................................................................................................. 57

5 Computer Setup (F10) Utility ........................................................................................................................ 58

Computer Setup (F10) Utilities ............................................................................................................................ 58

Using Computer Setup (F10) Utilities ................................................................................................ 58

Computer Setup–Main ....................................................................................................................... 60

Computer Setup—Security ............................................................................................................... 62

Computer Setup—Advanced ............................................................................................................. 64

Recovering the Conguration Settings ............................................................................................................... 69

6 Troubleshooting without diagnostics ............................................................................................................ 70

Safety and comfort .............................................................................................................................................. 70

Before you call for technical support .................................................................................................................. 70

Helpful hints ........................................................................................................................................................ 71

Solving general problems .................................................................................................................................... 72

Solving power problems ...................................................................................................................................... 76

Solving hard drive problems ................................................................................................................................ 77

Solving media card reader problems ................................................................................................................... 79

Solving display problems .................................................................................................................................... 80

Solving audio problems ....................................................................................................................................... 85

Solving printer problems ..................................................................................................................................... 87

Solving keyboard and mouse problems .............................................................................................................. 88

Solving Hardware Installation Problems ............................................................................................................. 90

Solving Network Problems .................................................................................................................................. 91

Solving memory problems .................................................................................................................................. 94

Solving CD-ROM and DVD problems .................................................................................................................... 95

Solving USB ash drive problems ........................................................................................................................ 98

Solving front panel component problems .......................................................................................................... 99

Solving Internet access problems ....................................................................................................................... 99

Solving software problems ............................................................................................................................... 101

7 POST error messages and diagnostic front panel LEDs and audible codes ....................................................... 102

POST numeric codes and text messages .......................................................................................................... 102

Interpreting system validation diagnostic front panel LEDs and audible codes .............................................. 107

8 Password security and resetting CMOS ........................................................................................................ 109

Resetting the password jumper ........................................................................................................................ 109

Clearing and resetting the BIOS ........................................................................................................................ 111

9 Using HP PC Hardware Diagnostics (UEFI) ..................................................................................................... 113

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................. 113

10 System backup and recovery ..................................................................................................................... 115

Backing up, restoring, and recovering in Windows 10 ...................................................................................... 115

Creating recovery media and backups ............................................................................................ 115

Creating HP Recovery media (select products only) .................................................... 115

Using Windows tools ....................................................................................................................... 117

Restore and recovery ...................................................................................................................... 117

vii

Recovering using HP Recovery Manager ...................................................................... 117

What you need to know before you get started ........................................ 117

Using the HP Recovery partition (select products only) ............................ 118

Using HP Recovery media to recover ......................................................... 118

Changing the computer boot order ............................................................ 119

Removing the HP Recovery partition (select products only) ..................... 119

Backing up, restoring, and recovering in Windows 8.1 or Windows 8 .............................................................. 119

Creating recovery media and backups ............................................................................................ 119

Restoring and recovering using Windows tools ............................................................................. 120

Using Reset when the system is not responding ......................................................... 120

Recovery using the Windows recovery USB ash drive ............................................... 121

Recovery using Windows operating system media (purchased separately) ............... 121

Backing up, restoring, and recovering in Windows 7 ........................................................................................ 121

Creating recovery media ................................................................................................................. 122

Creating recovery media using HP Recovery Manager (select models only) ............... 122

Creating recovery discs with HP Recovery Disc Creator (select models only) ............. 123

Creating recovery discs .............................................................................. 124

Backing up your information ........................................................................................ 124

System Restore ............................................................................................................................... 125

System Recovery ............................................................................................................................. 125

System Recovery when Windows is responding .......................................................... 125

System Recovery when Windows is not responding .................................................... 126

System Recovery using recovery media (select models only) ..................................... 126

Using HP Recovery Disc operating system discs (select models only) ........................ 127

Appendix A Power Cord Set Requirements ...................................................................................................... 129

General Requirements ....................................................................................................................................... 129

Japanese Power Cord Requirements ................................................................................................................. 129

Country-Specic Requirements ........................................................................................................................ 130

Appendix B Statement of Volatility ................................................................................................................ 131

Appendix C Specications ............................................................................................................................. 132

Index ........................................................................................................................................................... 133

viii

1 Product features

Standard conguration features

Features may vary depending on the model. For a complete listing of the hardware and software installed in

the computer, run the diagnostic utility (included on some computer models only).

NOTE: This computer model can be used in a tower orientation or a desktop orientation. The tower stand is

sold separately.

CAUTION: Several well-known vulnerabilities exist when a computer is in the Sleep state. To prevent an

unauthorized user from accessing data on your computer, even encrypted data, HP recommends that you

always initiate Hibernation instead of Sleep anytime the computer will be out of your physical

possession. This practice is particularly important when you travel with your computer.

Front panel components (EliteDesk 800, ProDesk 600, and HP

MP9)

NOTE: Your computer model may look slightly dierent from the illustration in this section.

1 Headphone Connector 5 USB 3.0 Port

2 Microphone or Headphone Connector (software

selectable, default mode is microphone)

6 HDD Activity LED

3 USB 3.0 Type C Port 7 Dual-State Power Button

4 USB 3.0 Port–Charging

NOTE: The USB 3.0 Port–Charging also provides current to charge a device such as a Smart Phone. The charging current is available

whenever the AC power cord is connected to the system, even when the system is o.

NOTE: The Power On Light is normally white when the power is on. If it is ashing red, there is a problem with the computer and it is

displaying a diagnostic code. Refer to the Interpreting system validation diagnostic front panel LEDs and audible codes on page 107 to

interpret the code.

Standard conguration features 1

Front panel components (EliteDesk 705 and ProDesk 400)

NOTE: Your computer model may look slightly dierent from the illustration in this section.

1 Headphone Connector 4 USB 3.0 Port

2 Microphone Connector 5 HDD Activity LED

3 USB 3.0 Port-Charging

NOTE: This USB 3.0 connector does not oer

port charging on 400 models.

6 Dual-State Power Button

NOTE: The USB 3.0 Port–Charging also provides current to charge a device such as a Smart Phone. The charging current is available

whenever the AC power cord is connected to the system, even when the system is o.

NOTE: The Power On Light is normally white when the power is on. If it is ashing red, there is a problem with the computer and it is

displaying a diagnostic code. Refer to the Interpreting system validation diagnostic front panel LEDs and audible codes on page 107 to

interpret the code.

2 Chapter 1 Product features

Rear panel components (EliteDesk 800, EliteDesk 705, ProDesk

600, and HP MP9)

NOTE: Your computer model may look slightly dierent from the illustration in this section.

1 External Antenna Connector (optional) 8 VGA Monitor Connector

2 Thumbscrew 9 DisplayPort (default, shown), HDMI, or Serial

Connector

3 Padlock Loop 10 USB 3.0 Ports (2) (blue)

4 Cable Lock Slot 11 USB 3.0 Ports (2) (blue) with support for wake

from S4/S5 power states (not for 705 models)

NOTE: On 705 models this is a USB 2.0 port

that supports only the S4 power state.

5 External Antenna Connector (optional) 12 RJ-45 Network Connector

6 Wireless antenna 13 Power Connector

7 DisplayPort Monitor Connector

Rear panel components (EliteDesk 800, EliteDesk 705, ProDesk 600, and HP MP9) 3

Rear panel components (ProDesk 400)

NOTE: Your computer model may look slightly dierent from the illustration in this section.

1 External Antenna Connector (optional) 8 VGA Monitor Connector

2 Thumbscrew 9 Serial Port

3 Padlock Loop 10 USB 3.0 Ports (2) (blue) with support for wake

from S4/S5 power states

4 Cable Lock Slot 11 USB 2.0 Connectors (2) (black)

5 External Antenna Connector (optional) 12 RJ-45 Network Connector

6 Wireless antenna 13 Power Connector

7 DisplayPort Monitor Connector

4 Chapter 1 Product features

Serial number location

Each computer has a unique serial number and a product ID number that are located on the exterior of the

computer. Keep these numbers available for use when contacting customer service for assistance.

Serial number location 5

2 Illustrated parts catalog

Desktop Mini (DM) chassis spare parts

NOTE: HP continually improves and changes product parts. For complete and current information on

supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then

follow the on-screen instructions.

Computer major components

Item Description

(1) Top cover

(2) Front bezel (ProDesk model shown)

(3) External power supply, 90W

90 W

65 W

(4) System board (includes replacement thermal material)

6 Chapter 2 Illustrated parts catalog

Item Description

(5) Memory modules (DDR3, PC3-12800, 1600-MHz)(for use in EliteDesk 705 models)

8-GB

4-GB

*Memory modules (DDR4, PC4-17000, 2133-MHz)(for use in EliteDesk 800, ProDesk 600, ProDesk 400, and MP9 models)

16-GB

8-GB

4-GB

*Intel Processors (800, 600, 400, MP9 models; include replacement thermal material)

Intel Core i7-6700

Intel Core i7-6700T

Intel Core i5-6600

Intel Core i5-6600T

Intel Core i5-6500

Intel Core i7-6500T

Intel Core i3-6320

Intel Core i3-6300T

Intel Core i3-6100T

Intel Pentium G4500T

Intel Pentium G4400T

Intel Pentium G4400TE (MP9 G2 models only)

Intel Celeron G3900T

Intel Celeron G3900TE (MP9 G2 models only)

*AMD Processors (705 models; not replaceable)

AMD PRO A12 APU with AMD Radeon™ R7 HD Graphics

AMD PRO A10 APU with AMD Radeon R7 HD Graphics

AMD PRO A8 APU with AMD Radeon R6 HD Graphics

AMD PRO A6 APU with AMD Radeon R5 HD Graphics

Desktop Mini (DM) chassis spare parts 7

Cables

Item Description

(1) SATA cable/connector

NOTE: Included with computer.

Tab color may vary.

*Adapter, DisplayPort to HDMI 1.4

*Adapter, DisplayPort to VGA

*Adapter, DisplayPort to DVI

*Adapter, USB-C to USB 3.0 (800, 600, MP9 models)

*DisplayPort cable

*USB to serial adapter

8 Chapter 2 Illustrated parts catalog

Misc parts

Item Description

(1) Heat sink

(2) Fan

(3) Secondary hard drive fan (for use in EliteDesk 800 and MP9, 65W models)

(4) Speaker

(5) Power switch/light cover

(6) Option board, HDMI

(7) Option board, serial port

*Option board, DisplayPort (not illstrated)

(8) Thermal sensor

(9) Hood sensor assembly

*Stand

*Port cover

*HP Ultraslim Keyed Cable Lock

Desktop Mini (DM) chassis spare parts 9

Item Description

*WLAN modules:

Intel Dual Band Wireless-AC 7265 NV

Intel Dual Band Wireless-AC 8260 + Bluetooth 4.0

Intel Dual Band Wireless-AC 3165 + Bluetooth 4.0

HP WLAN 802.11 a/b/g/n + Bluetooth 4.0

*Antenna, dual band dipole, 802.11a/b/g/n + Velcro

*External antenna kit

*Expansion Module Kit

Hard drive – I/O (includes screws)

I/O

Optical drive

USB 3.0 Type A-B

USB 3.0 Type A-B (short)

*Security/Dual VESA Sleeve

*Screw Kit

*Mouse

USB, laser

USB, optical

Washable

Wireless

Antimicrobial

Hardened

*Keyboards

USB slim

USB

Wireless

Washable

Smart card

Conferencing

Antimicrobial

10 Chapter 2 Illustrated parts catalog

Drives

Description

Hard drives

2 TB, 5400 rpm, hard drive, 2.5-inch

1 TB, 7200 rpm, hard drive, 2.5-inch

1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD (hybrid SSD)

500 GB, 7200 rpm hard drive, 2.5-inch

500 GB, 2.5-inch, SSHD (hybrid SSD)

500 GB, 7200 rpm hard drive, 2.5-inch, OPAL 2, SED

500 GB, 5400 rpm hard drive, 2.5-inch, FIPS

Solid-state drives

512 GB solid-state drive (SSD), 3D, NAND

256 GB solid-state drive (SSD), OPAL 2, self-encrypting (SED)

256 GB solid-state drive (SSD)

256 GB solid-state drive (SSD), 3D, NAND

180 GB solid-state drive (SSD), SATA 6.0, MLC

180 GB solid-state drive (SSD)

128 GB solid-state drive (SSD)

128 GB solid-state drive (SSD), OPAL 2, Self-encrypting Drive (SED), SATA 6.0

128 GB solid-state drive (SSD), 3D, NAND

120 GB solid-state drive (SSD), SATA 6.0, MLC

120 GB solid-state drive (SSD)

M.2 drive

256 GB solid-state drive (SSD), PCIe, 2280, NVMe

256 GB solid-state drive (SSD), PCIe, 2280SS

128 GB solid-state drive (SSD), PCIe, 2280, NVMe

128 GB solid-state drive (SSD), PCIe, 2280SS

External optical drive

8x DVD drive

Desktop Mini (DM) chassis spare parts 11

3 Routine care, SATA drive guidelines, and

disassembly preparation

This chapter provides general service information for the computer. Adherence to the procedures and

precautions described in this chapter is essential for proper service.

CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system

board. You must disconnect the power cord from the power source before opening the computer to prevent

system board or component damage.

Electrostatic discharge information

A sudden discharge of static electricity from your nger or other conductor can destroy static-sensitive

devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device

exposed to electrostatic discharge (ESD) may not appear to be aected at all and can work perfectly

throughout a normal cycle. The device may function normally for a while, but it has been degraded in the

internal layers, reducing its life expectancy.

Networks built into many integrated circuits provide some protection, but in many cases, the discharge

contains enough power to alter device parameters or melt silicon junctions.

Generating static

The following table shows that:

●Dierent activities generate dierent amounts of static electricity.

●Static electricity increases as humidity decreases.

Relative Humidity

Event 55% 40% 10%

Walking across carpet

Walking across vinyl oor

Motions of bench worker

Removing DIPs from plastic tube

7,500 V

3,000 V

400 V

15,000 V

5,000 V

800 V

700 V

35,000 V

12,000 V

6,000 V

2,000 V

Removing DIPs from vinyl tray

Removing DIPs from Styrofoam

Removing bubble pack from PCB

Packing PCBs in foam-lined box

2,000 V

3,500 V

7,000 V

5,000 V

4,000 V

5,000 V

20,000 V

11,000 V

11,500 V

14,500 V

26,500 V

21,000 V

These are then multi-packaged inside plastic tubes, trays, or Styrofoam.

NOTE: 700 volts can degrade a product.

12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

Preventing electrostatic damage to equipment

Many electronic components are sensitive to ESD. Circuitry design and structure determine the degree of

sensitivity. The following packaging and grounding precautions are necessary to prevent damage to electric

components and accessories.

●To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.

●Protect all electrostatic parts and assemblies with conductive or approved containers or packaging.

●Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.

●Place items on a grounded surface before removing them from their container.

●Always be properly grounded when touching a sensitive component or assembly.

●Avoid contact with pins, leads, or circuitry.

●Place reusable electrostatic-sensitive parts from assemblies in protective packaging or conductive

foam.

Personal grounding methods and equipment

Use the following equipment to prevent static electricity damage to equipment:

●Wrist straps are exible straps with a maximum of one-megohm ± 10% resistance in the ground cords.

To provide proper ground, a strap must be worn snug against bare skin. The ground cord must be

connected and t snugly into the banana plug connector on the grounding mat or workstation.

●Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible with

most types of shoes or boots. On conductive oors or dissipative oor mats, use them on both feet with

a maximum of one-megohm ± 10% resistance between the operator and ground.

Static Shielding Protection Levels

Method Voltage

Antistatic plastic

Carbon-loaded plastic

Metallized laminate

1,500

7,500

15,000

Grounding the work area

To prevent static damage at the work area, use the following precautions:

●Cover the work surface with approved static-dissipative material. Provide a wrist strap connected to the

work surface and properly grounded tools and equipment.

●Use static-dissipative mats, foot straps, or air ionizers to give added protection.

●Handle electrostatic sensitive components, parts, and assemblies by the case or PCB laminate. Handle

them only at static-free work areas.

●Turn o power and input signals before inserting and removing connectors or test equipment.

●Use xtures made of static-safe materials when xtures must directly contact dissipative surfaces.

●Keep work area free of nonconductive materials such as ordinary plastic assembly aids and Styrofoam.

●Use eld service tools, such as cutters, screwdrivers, and vacuums, that are conductive.

Electrostatic discharge information 13

Recommended materials and equipment

Materials and equipment that are recommended for use in preventing static electricity include:

●Antistatic tape

●Antistatic smocks, aprons, or sleeve protectors

●Conductive bins and other assembly or soldering aids

●Conductive foam

●Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance

●Static-dissipative table or oor mats with hard tie to ground

●Field service kits

●Static awareness labels

●Wrist straps and footwear straps providing one-megohm +/- 10% resistance

●Material handling packages

●Conductive plastic bags

●Conductive plastic tubes

●Conductive tote boxes

●Opaque shielding bags

●Transparent metallized shielding bags

●Transparent shielding tubes

Operating guidelines

To prevent overheating and to help prolong the life of the computer:

●Keep the computer away from excessive moisture, direct sunlight, and extremes of heat and cold.

●Operate the computer on a sturdy, level surface. Leave a 10.2-cm (4-inch) clearance on all vented sides

of the computer and above the monitor to permit the required airow.

●Never restrict the airow into the computer by blocking any vents or air intakes. Do not place the

keyboard, with the keyboard feet down, directly against the front of the desktop unit as this also

restricts airow.

●Occasionally clean the air vents on all vented sides of the computer. Lint, dust, and other foreign matter

can block the vents and limit the airow. Be sure to unplug the computer before cleaning the air vents.

●Never operate the computer with the cover or side panel removed.

●Do not stack computers on top of each other or place computers so near each other that they are subject

to each other’s re-circulated or preheated air.

●If the computer is to be operated within a separate enclosure, intake and exhaust ventilation must be

provided on the enclosure, and the same operating guidelines listed above will still apply.

●Keep liquids away from the computer and keyboard.

14 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

●Never cover the ventilation slots on the monitor with any type of material.

●Install or enable power management functions of the operating system or other software, including

sleep states.

Routine care

General cleaning safety precautions

1. Never use solvents or ammable solutions to clean the computer.

2. Never immerse any parts in water or cleaning solutions; apply any liquids to a clean cloth and then use

the cloth on the component.

3. Always unplug the computer when cleaning with liquids or damp cloths.

4. Always unplug the computer before cleaning the keyboard, mouse, or air vents.

5. Disconnect the keyboard before cleaning it.

6. Wear safety glasses equipped with side shields when cleaning the keyboard.

Cleaning the Computer Case

Follow all safety precautions in General cleaning safety precautions on page 15 before cleaning the computer.

To clean the computer case, follow the procedures described below:

●To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.

●For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it with a cloth

or swab dampened with clear water.

●For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will evaporate

quickly and not leave a residue.

●After cleaning, always wipe the unit with a clean, lint-free cloth.

●Occasionally clean the air vents on the computer. Lint and other foreign matter can block the vents and

limit the airow.

Cleaning the keyboard

Follow all safety precautions in General cleaning safety precautions on page 15 before cleaning the keyboard.

To clean the tops of the keys or the keyboard body, follow the procedures described in Cleaning the Computer

Case on page 15.

When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 15

before following these procedures:

CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under the

keys.

●Visible debris underneath or between the keys may be removed by vacuuming or shaking.

●Canned, pressurized air may be used to clean debris from under the keys. Caution should be used as too

much air pressure can dislodge lubricants applied under the wide keys.

Routine care 15

●If you remove a key, use a specially designed key puller to prevent damage to the keys. This tool is

available through many electronic supply outlets.

CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are

improperly removed or installed, the keyboard may not function properly.

●Cleaning under a key may be done with a swab moistened with isopropyl alcohol and squeezed out. Be

careful not to wipe away lubricants necessary for proper key functions. Use tweezers to remove any

bers or dirt in conned areas. Allow the parts to air dry before reassembly.

Cleaning the monitor

●Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed for

cleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may seep into the

housing and damage a component. Never use solvents or ammable liquids on the monitor.

●To clean the monitor body follow the procedures in Cleaning the Computer Case on page 15.

Cleaning the mouse

Before cleaning the mouse, ensure that the power to the computer is turned o.

●Clean the mouse ball by rst removing the retaining plate and the ball from the housing. Pull out any

debris from the ball socket and wipe the ball with a clean, dry cloth before reassembly.

●To clean the mouse body, follow the procedures in Cleaning the Computer Case on page 15.

Service considerations

Listed below are some of the considerations that you should keep in mind during the disassembly and

assembly of the computer.

Tools and software Requirements

To service the computer, you need the following:

●Torx T-15 screwdriver

●Torx T-15 screwdriver with small diameter shank (for certain front bezel removal)

●Flat-bladed screwdriver (may sometimes be used in place of the Torx screwdriver)

●Phillips #2 screwdriver

●Diagnostics software

●Tamper-resistant T-15 wrench

Screws

The screws used in the computer are not interchangeable. They may have standard or metric threads and may

be of dierent lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP

strongly recommends that all screws removed during disassembly be kept with the part that was removed,

then returned to their proper locations.

CAUTION: Metric screws have a black nish. U.S. screws have a silver nish and are used on hard drives only.

CAUTION: As each subassembly is removed from the computer, it should be placed away from the work area

to prevent damage.

16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

Cables and connectors

Most cables used throughout the unit are at, exible cables. These cables must be handled with care to

avoid damage. Apply only the tension required to seat or unseat the cables during insertion or removal from

the connector. Handle cables by the connector whenever possible. In all cases, avoid bending or twisting the

cables, and ensure that the cables are routed in such a way that they cannot be caught or snagged by parts

being removed or replaced.

CAUTION: When servicing this computer, ensure that cables are placed in their proper location during the

reassembly process. Improper cable placement can damage the computer.

Hard Drives

Handle hard drives as delicate, precision components, avoiding all physical shock and vibration. This applies

to failed drives as well as replacement spares.

●If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective packaging

and label the package “Fragile: Handle With Care.”

●Do not remove hard drives from the shipping package for storage. Keep hard drives in their protective

packaging until they are actually mounted in the computer.

●Avoid dropping drives from any height onto any surface.

●If you are inserting or removing a hard drive, turn o the computer. Do not remove a hard drive while the

computer is on or in standby mode.

●Before handling a drive, ensure that you are discharged of static electricity. While handling a drive, avoid

touching the connector.

●Do not use excessive force when inserting a drive.

●Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic elds

such as monitors or speakers.

Lithium coin cell battery

The battery that comes with the computer provides power to the real-time clock and has a minimum lifetime

of about three years.

See the appropriate removal and replacement chapter for the chassis you are working on in this guide for

instructions on the replacement procedures.

WARNING! This computer contains a lithium battery. There is a risk of re and chemical burn if the battery is

handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or re, or

expose it to temperatures higher than 140ºF (60ºC). Do not attempt to recharge the battery.

NOTE: Batteries, battery packs, and accumulators should not be disposed of together with the general

household waste. In order to forward them to recycling or proper disposal, please use the public collection

system or return them to HP, their authorized partners, or their agents.

SATA hard drives

Serial ATA Hard Drive Characteristics

Number of pins/conductors in data cable 7/7

Number of pins in power cable 15

SATA hard drives 17

Maximum data cable length 39.37 in (100 cm)

Data interface voltage dierential 400-700 mV

Drive voltages 3.3 V, 5 V, 12 V

Jumpers for conguring drive N/A

Data transfer rate 6.0 Gb/s

SATA hard drive cables

SATA data cable

Always use an HP approved SATA 6.0 Gb/s cable as it is fully backwards compatible with the SATA 1.5 Gb/s

drives.

Current HP desktop products ship with SATA 6.0 Gb/s hard drives.

SATA data cables are susceptible to damage if overexed. Never crease a SATA data cable and never bend it

tighter than a 30 mm (1.18 in) radius.

The SATA data cable is a thin, 7-pin cable designed to transmit data for only a single drive.

SMART ATA drives

The Self Monitoring Analysis and Recording Technology (SMART) ATA drives for the HP Personal Computers

have built-in drive failure prediction that warns the user or network administrator of an impending failure or

crash of the hard drive. The SMART drive tracks fault prediction and failure indication parameters such as

reallocated sector count, spin retry count, and calibration retry count. If the drive determines that a failure is

imminent, it generates a fault alert.

18 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation

Cable management

Always follow good cable management practices when working inside the computer.

●Keep cables away from major heat sources like the heat sink.

●Do not jam cables on top of expansion cards or memory modules. Printed circuit cards like these are not

designed to take excessive pressure on them.

●Keep cables clear of sliding or moveable parts to prevent them from being cut or crimped when the parts

are moved.

●When folding a at ribbon cable, never fold to a sharp crease. Sharp creases may damage the wires.

●Some at ribbon cables come prefolded. Never change the folds on these cables.

●Do not bend any cable sharply. A sharp bend can break the internal wires.

●Never bend a SATA data cable tighter than a 30 mm (1.18 in) radius.

●Never crease a SATA data cable.

●Do not rely on components like the drive cage, power supply, or computer cover to push cables down

into the chassis. Always position the cables to lay properly by themselves.

Cable management 19

4 Removal and replacement procedures –

desktop mini (DM) chassis

Adherence to the procedures and precautions described in this chapter is essential for proper service. After

completing all necessary removal and replacement procedures, run the Diagnostics utility to verify that all

components operate properly.

NOTE: Not all features listed in this guide are available on all computers.

NOTE: HP continually improves and changes product parts. For complete and current information on

supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then

follow the on-screen instructions.

Preparation for disassembly

See Routine care, SATA drive guidelines, and disassembly preparation on page 12 for initial safety procedures.

1. Remove/disengage any security devices that prohibit opening the computer.

2. Remove all removable media, such as a USB ash drive, from the computer.

3. Turn o the computer properly through the operating system, then turn o any external devices.

CAUTION: Turn o the computer before disconnecting any cables.

Regardless of the power-on state, voltage is always present on the system board as long as the system

is plugged into an active AC outlet. In some systems the cooling fan is on even when the computer is in

the “Standby,” or “Suspend” modes. The power cord should always be disconnected before servicing a

unit.

4. Disconnect the power cord from the power outlet and disconnect any external devices.

5. If the computer is on a stand, remove the computer from the stand.

WARNING! Beware of sharp edges inside the chassis.

20 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Top cover

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Loosen the thumbscrew on the rear of the computer (1).

3. Slide the panel forward and lift if o the computer (2).

NOTE: Your computer model may look slightly dierent from the illustration in this section.

To install the top cover, reverse the removal procedure.

Top cover 21

Front bezel

The front bezel is secured to the top cover by tabs.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Position the top cover upside-down so you can access the inside of the bezel.

4. Pull down to loose the bottom, interior on the bezel (1).

5. Disengage the tabs on the top, interior of the bezel (2).

6. Remove the bezel from the top cover.

To install the front bezel, reverse the removal procedure.

22 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Hard drive

Description

Hard drives

2 TB, 5400 rpm, hard drive, 2.5-inch

1 TB, 7200 rpm, hard drive, 2.5-inch

1 TB, 7200 rpm, hard drive, 2.5-inch, SSHD (hybrid SSD)

500 GB, 7200 rpm hard drive, 2.5-inch

500 GB, 2.5-inch, SSHD (hybrid SSD)

500 GB, 7200 rpm hard drive, 2.5-inch, OPAL 2, SED

500 GB, 5400 rpm hard drive, 2.5-inch, FIPS

Solid-state drives

512 GB solid-state drive (SSD), 3D, NAND

256 GB solid-state drive (SSD), OPAL 2, self-encrypting (SED)

256 GB solid-state drive (SSD)

256 GB solid-state drive (SSD), 3D, NAND

180 GB solid-state drive (SSD), SATA 6.0, MLC

180 GB solid-state drive (SSD)

128 GB solid-state drive (SSD)

128 GB solid-state drive (SSD), OPAL 2, Self-encrypting Drive (SED), SATA 6.0

128 GB solid-state drive (SSD), 3D, NAND

120 GB solid-state drive (SSD), SATA 6.0, MLC

120 GB solid-state drive (SSD)

NOTE: Before you remove the old hard drive, be sure to back up the data from the old hard drive so that you

can transfer the data to the new hard drive.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover Top cover on page 21.

3. Pull the blue tab (1) to disconnect the HDD power and data cable from the HDD.

Hard drive 23

4. Pull the release lever next to the rear of the HDD away from the HDD (2). While pulling the release lever

out, slide the drive back until it stops, then lift the HDD up and out of the cage (3).

5. To install a HDD, you must transfer the silver and blue isolation mounting guide screws from the old HDD

to the new HDD.

6. Align the guide screws with the slots on the chassis drive cage, press the HDD down into the cage, then

slide it forward until it stops and locks in place (1).

24 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

7. Connect the HDD power and data cable (2) to the HDD.

Reverse this procedure to replace the hard drive.

Hard drive 25

Secondary fan (EliteDesk 800 and MP9 models only)

HP EliteDesk 800 G2 and HP MP9 G2 Retail System models include a secondary fan installed under the hard

drive.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. Disconnect the fan plug from the system board (1).

5. Remove the two screws securing the secondary fan (2).

6. Lift the fan out of the chassis (3).

To install the secondary fan, reverse the removal procedure.

26 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Drive cage

The drive cage is located next to the heat sink. The drive cage is secured with three Phillips screws.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. Remove the three screws securing the HDD cage to the chassis (1).

5. Pull the hood sensor up and o the HDD cage (2).

6. Lift the HDD cage out of the chassis (3).

To install the drive cage, reverse the removal procedure.

Drive cage 27

M.2 PCIe solid state drive (SSD)

Description

256 GB solid-state drive (SSD), PCIe, 2280, NVMe

256 GB solid-state drive (SSD), PCIe, 2280SS

128 GB solid-state drive (SSD), PCIe, 2280, NVMe

128 GB solid-state drive (SSD), PCIe, 2280SS

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover Top cover on page 21.

3. Remove the hard drive (Hard drive on page 23).

4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and

MP9 models only) on page 26).

5. Remove the hard drive cage (Drive cage on page 27).

6. Locate the SSD on the system board.

7. Remove the screw securing the SSD to the system board.

8. Grasp the SSD by the sides and carefully pull it out of the socket.

9. Insert the new SSD into the socket on the system board.

NOTE: An SSD can be installed in only one way.

10. Press the SSD connectors rmly into the socket.

28 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

11. Press the SSD down to the system board and use the included screw to secure the SSD.

M.2 PCIe solid state drive (SSD) 29

WLAN module

Description

Intel Dual Band Wireless-AC 7265 NV

Intel Dual Band Wireless-AC 8260 + Bluetooth 4.0

Intel Dual Band Wireless-AC 3165 + Bluetooth 4.0

HP WLAN 802.11 a/b/g/n + Bluetooth 4.0

The WLAN module is secured with one Phillips screw and has two connected antennas. It is located under the

hard drive.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and

MP9 models only) on page 26).

5. Remove the drive cage (Drive cage on page 27).

6. Locate the WLAN module on the system board.

7. Disconnect both antenna cables from the WLAN module.

NOTE: You may need to use a small tool, such as tweezers or needle-nose pliers, to disconnect and

connect the antenna cables.

8. Grasp the WLAN module by the sides and pull it out of the socket.

9. Insert the new WLAN module into the socket on the system board.

NOTE: A WLAN module can be installed in only one way.

10. Press the WLAN connectors rmly into the socket (1).

11. Press the WLAN module down to the system board and use the included screw to secure the module (2).

30 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

12. Attach the internal antenna to the antenna connectors (3) on the WLAN module.

To install the WLAN module, reverse the removal procedure.

NOTE: WLAN modules are designed with a notch to prevent incorrect insertion.

WLAN module 31

External antenna

The antennas route from the WLAN module to the cable connectors on the rear of the computer.

To install the antennas:

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and

MP9 models only) on page 26).

5. Remove the drive cage (Drive cage on page 27).

6. Locate the WLAN module on the system board.

7. Disconnect the internal antennae from the WLAN module.

For instructions, see WLAN module on page 30.

8. Locate both external antenna positions on the rear panel.

32 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

9. Insert a Phillips screwdriver in each knock-out feature and rotate to remove the blank.

10. Feed the external antenna cable through each hole and screw the antenna into position.

11. Connect the external antenna cables to the WLAN module.

Reverse the removal procedure to install the WLAN antennas and transceivers.

External antenna 33

RTC battery

The battery that comes with the computer provides power to the real-time clock. When replacing the battery,

use a battery equivalent to the battery originally installed in the computer. The computer comes with a 3-volt

lithium coin cell battery.

WARNING! The computer contains an internal lithium manganese dioxide battery. There is a risk of re and

burns if the battery is not handled properly. To reduce the risk of personal injury:

Do not attempt to recharge the battery.

Do not expose to temperatures higher than 60°C (140ºF).

Do not disassemble, crush, puncture, short external contacts, or dispose of in re or water.

Replace the battery only with the HP spare designated for this product.

CAUTION: Before replacing the battery, it is important to back up the computer CMOS settings. When the

battery is removed or replaced, the CMOS settings will be cleared.

Static electricity can damage the electronic components of the computer or optional equipment. Before

beginning these procedures, ensure that you are discharged of static electricity by briey touching a

grounded metal object.

NOTE: The lifetime of the lithium battery can be extended by plugging the computer into a live AC wall

socket. The lithium battery is only used when the computer is NOT connected to AC power.

HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable

batteries. For more information about recycling programs, go to http://www.hp.com/recycle.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and

MP9 models only) on page 26).

5. Remove the hard drive cage (Drive cage on page 27).

34 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

6. Locate the battery and battery holder on the system board.

NOTE: You may need to use a small tool, such as tweezers or needle-nose pliers, to remove and

replace the battery.

7. Lift the battery out of the holder.

8. Slide the replacement battery into position, positive side up. The battery holder automatically secures

the battery in the proper position.

RTC battery 35

Thermal sensor

A thermal sensor installs at the front of the computer near the speaker. Adhesive secures the sensor to the

chassis that houses the speaker.

To remove the thermal sensor:

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and

MP9 models only) on page 26).

5. Remove the drive cage (Drive cage on page 27).

6. Disconnect the thermal module from the system board (1).

7. Pull to disengage the sensor to the computer chassis (2). The sensor is secured to the chassis with

adhesive.

To install the thermal sensor, reverse the removal procedures.

36 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Fan

The fan sits between the fan sink and the front of the computer.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Lift the tab on the outer edge of the fan and rotate the fan upward.

4. Disconnect the fan plug from the system board, and then lift the fan out of the chassis.

To install the fan, reverse the removal procedure.

Fan 37

Power switch/light cover

The power switch/light cover is located at the front, right of the computer, under the top cover.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the fan (Fan on page 37).

4. Rotate the top of the cover away from the computer and lift it o the system board.

To install the power switch/light cover, reverse the removal procedure.

38 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Memory

Description

Memory modules (PC3-12800, 1600-MHz)(for use in EliteDesk 705 models)

8-GB

4-GB

Memory modules (PC4-17000, 2133-MHz)(for use in EliteDesk 800, ProDesk 600, ProDesk 400, and HP MP9 G2 Retail System models)

16-GB

8-GB

4-GB

The computer comes with small outline, dual inline memory modules (SODIMMs).

SODIMMs

The memory sockets on the system board can be populated with up to two industry-standard SODIMMs.

These memory sockets are populated with at least one preinstalled SODIMM. To achieve the maximum

memory support, you can populate the system board with up to 32 GB (EliteDesk 800, ProDesk 600, and HP

MP9) or 16 GB (EliteDesk 705 and ProDesk 400) of memory.

SODIMM specications

For proper system operation, the SODIMMs must meet the following qualications:

EliteDesk 800, ProDesk 600, HP

MP9

EliteDesk 705 ProDesk 400

SODIMM 1.2 volt DDR4-SDRAM DIMMs 1.5 volt DDR3-SDRAM DIMMs or 1.35

volt DDR3L-SDRAM (Low Power)

DIMMs

1.2 volt DDR4-SDRAM DIMMs

Compliance unbuered non-ECC PC4-17000

DDR4-2133 MHz-compliant

unbuered non-ECC PC3-12800

DDR3/DDR3L-1600 MHz-compliant

unbuered non-ECC PC4-17000

DDR4-2133 MHz-compliant

Pins industry-standard 288-pin

containing the mandatory Joint

Electronic Device Engineering

Council (JEDEC) specication

industry-standard 240-pin

containing the mandatory Joint

Electronic Device Engineering

Council (JEDEC) specication

industry-standard 288-pin

containing the mandatory Joint

Electronic Device Engineering

Council (JEDEC) specication

Support support CAS latency 15 DDR4 2133

MHz (15-15-15 timing)

support CAS latency 11 DDR3/

DDR3L 1600 MHz (11-11-11 timing)

support CAS latency 15 DDR4 2133

MHz (15-15-15 timing)

Slots 222

Maximum

Memory

32 GB 16 GB 32 GB

Supported 512 Mbit, 1 Gbit, and 2 Gbit non-ECC memory technologies single-sided and double-sided DIMMs

Note The system will not operate properly if you install unsupported DIMM memory. DIMMs constructed with x8 and x16

DDR devices are supported; DIMMs constructed with x4 SDRAM are not supported.

Memory 39

HP oers upgrade memory for this computer and advises that the consumer purchase it to avoid

compatibility issues with unsupported third-party memory.

Populating SODIMM sockets

There are two SODIMM sockets on the system board, with one socket per channel. The sockets are labeled

DIMM1 and DIMM3. The DIMM1 socket operates in memory channel B. The DIMM3 socket operates in memory

channel A.

Item Description System Board Label Socket Color

1 SODIMM1 socket, Channel B DIMM1 Black

2 SODIMM3 socket, Channel A DIMM3 Black

The system will automatically operate in single channel mode, dual channel mode, or ex mode, depending

on how the SODIMMs are installed.

●The system will operate in single channel mode if the SODIMM sockets are populated in one channel

only.

●The system will operate in a higher-performing dual channel mode if the memory capacity of the

SODIMM in Channel A is equal to the memory capacity of the SODIMM in Channel B.

●The system will operate in ex mode if the memory capacity of the SODIMM in Channel A is not equal to

the memory capacity of the SODIMM in Channel B. In ex mode, the channel populated with the least

amount of memory describes the total amount of memory assigned to dual channel and the remainder

is assigned to single channel. If one channel will have more memory than the other, the larger amount

should be assigned to channel A.

●In any mode, the maximum operational speed is determined by the slowest SODIMM in the system.

40 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Replacing SODIMMs

CAUTION: You must disconnect the power cord and wait approximately 30 seconds for the power to drain

before adding or removing memory modules. Regardless of the power-on state, voltage is always supplied to

the memory modules as long as the computer is plugged into an active AC outlet. Adding or removing

memory modules while voltage is present may cause irreparable damage to the memory modules or system

board.

The memory module sockets have gold-plated metal contacts. When upgrading the memory, it is important

to use memory modules with gold-plated metal contacts to prevent corrosion and/or oxidation resulting from

having incompatible metals in contact with each other.

Static electricity can damage the electronic components of the computer or optional cards. Before beginning

these procedures, ensure that you are discharged of static electricity by briey touching a grounded metal

object.

When handling a memory module, be careful not to touch any of the contacts. Doing so may damage the

module.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the fan (Fan on page 37).

4. Locate the memory modules on the system board.

Item Description System Board Label Socket Color

1 SODIMM1 socket, Channel B DIMM1 Black

2 SODIMM3 socket, Channel A DIMM3 Black

Memory 41

5. To remove a SODIMM, press outward on the two latches on each side of the SODIMM (1) then pull the

SODIMM out of the socket (2).

6. Slide the new SODIMM into the socket at approximately a 30° angle (1) then press the SODIMM down (2)

so that the latches lock it in place.

NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab

on the memory socket.

The computer automatically recognizes the additional memory when you turn on the computer.

42 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Heat sink

The heat sink is secured with four captive Torx screws.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the fan (Fan on page 37).

4. In the order indicated on the heat sink, loosen the three captive Torx screws, and then lift the heat sink

out of the computer.

CAUTION: Be sure the loosen the screws in the order indicated by the numbers stamped on the heat

sink.

CAUTION: To reduce a degradation in thermal performance, be sure not to touch the thermal grease

on the surface of the processor or the heat sink.

To replace the heat sink, reverse the removal procedures.

When replacing the heat sink, be sure to install thermal pads as shown in the following image:

Heat sink 43

44 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Processor – Intel models

Description

Intel Core i7-6700

Intel Core i7-6700T

Intel Core i5-6600

Intel Core i5-6600T

Intel Core i5-6500

Intel Core i7-6500T

Intel Core i3-6320

Intel Core i3-6300T

Intel Core i3-6100T

Intel Pentium G4500T

Intel Pentium G4400T

Intel Pentium G4400TE (MP9 G2 models only)

Intel Celeron G3900T

Intel Pentium G3900TE (MP9 G2 models only)

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the fan (Fan on page 37).

4. Remove the heat sink (Heat sink on page 43).

5. Rotate the locking lever to its full open position (1).

6. Raise and rotate the microprocessor retainer to its fully open position (2).

Processor – Intel models 45

7. Lift the processor (3) straight up and remove it.

CAUTION: Do NOT handle the pins in the processor socket. These pins are very fragile and handling

them could cause irreparable damage. Once pins are damaged it may be necessary to replace the

system board.

The heat sink must be installed within 24 hours of installing the processor to prevent damage to the

processor’s solder connections.

Reverse the removal procedure to install a new processor.

NOTE: After installing a new processor onto the system board, update the system ROM to ensure that the

latest version of the BIOS is being used on the computer. The latest system BIOS can be found on the Web at:

http://h18000.www1.hp.com/support/les.

46 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Speaker

A single speaker is located on the left side of the computer behind the front bezel, inside the chassis. It is

secured by a white peg that you pull out to release.

To remove the speaker:

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. Remove the hard drive cage (Drive cage on page 27).

5. Disconnect the speaker cable from the system board connector (1).

6. From the front of the computer, pull to remove the white peg that secures the speaker (2).

7. Lift to remove the speaker from the computer (3).

To install the speaker, reverse the removal procedures.

Speaker 47

Expansion connector board

Description

HDMI expansion connector board

Serial port expansion connector board

DisplayPort expansion connector board

An expansion board can be installed near the back of the system board that provides an additional connector

on the rear I/O panel. The board is secured with two screws and connects to the a connector on the system

board.

To remove the expansion connector board:

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the heat sink (Heat sink on page 43).

4. Remove the fan (Fan on page 37).

5. Remove the two Phillips screws that secure the board to the system board.

6. Lift to disengage the board from the system board connector, and then remove the expansion connector

board from the computer.

To install the expansion connector board, reverse the removal procedures.

48 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

System board

NOTE: All system board spare part kits include replacement thermal material.

NOTE: System board appearance may vary.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and

MP9 models only) on page 26).

5. Remove the drive cage (Drive cage on page 27).

6. Remove the fan (Fan on page 37).

7. Remove the heat sink (Heat sink on page 43).

8. Remove the power light cover (Power switch/light cover on page 38).

9. Remove the solid-state drive (M.2 PCIe solid state drive (SSD) on page 28).

10. Remove the WLAN module (WLAN module on page 30).

11. Remove the memory modules (Memory on page 39).

12. Remove the expansion connector board (Expansion connector board on page 48).

13. Remove the thermal sensor (Thermal sensor on page 36).

14. Disconnect all cables from the system board, noting their location for reinstallation.

15. Remove the four Torx screws that secure the system board to the computer.

16. Slide the system board out of the computer.

System board 49

To install the system board, reverse the removal procedures.

NOTE: When replacing the system board, you must change the chassis serial number in the BIOS.

Updating SMBIOS Information

When replacing the system board, you must reprogram the SMBIOS information on the aected computer.

Failure to reprogram the board will result in eventual failure, such as an activation failure (need to reactivate

the system) or a system recovery failure.

To update SMBIOS information in Computer Setup:

1. Turn on or restart the computer.

2. Press Esc while the “Press the ESC key for Startup Menu” message is displayed at the bottom of the

screen.

NOTE: If you do not press Esc at the appropriate time, you must restart the computer and again press

Esc when the monitor light turns green to access the utility.

3. Press F10 to enter Computer Setup.

4. Go to Main > Set Machine Unique Data.

5. If necessary, press Ctrl+A to initiate edit mode.

6. Edit the elds listed. If the feature byte has data or is not editable, then it was not cleared and cannot be

edited.

System ID Setup Page

Setup Field Name Comment Label

Product Name Enter the Model name/number or

marketing name.

Flexbuild

Serial Number Enter the Serial Number of Unit. Support

SKU Number Enter the SKU or Product Number including

Localization Code.

Support

Asset Tag Enter the 18-byte identier assigned to the

computer.

Support

Feature Byte Enter the Feature Byte string. The feature

byte string is case sensitive.

The label includes spaces after every four

characters. You can enter or ignore these

spaces – their only purpose is to help with

data entry. There is a character limitation

of 40 bytes per line. When you reach this

limit, go

If you make an error during data entry, the

data will not validate, and the computer

asks you to correct your data input.

Flexbuild

Build ID The Build ID of the unit. Flexbuild

50 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

System board callouts, EliteDesk 800, ProDesk 600, and HP MP9 Retail System

Sys Bd Label Color Component Sys Bd Label Color Component

SPKR White Speaker connector HDD_FAN White Secondary hard drive

HSENSE White Hood sensor connector SATA Blue Hard drive data

connector

THERM White Thermal sensor COMM_DP White Expansion board

connector

SSD Black Solid-state module

socket

XU1 Black Processor socket

WLAN Black WLAN module socket DIMM3 Black Secondary memory

socket

BAT Black RTC battery DIMM1 Black Primary memory socket

PSWD Black/blue Password header and

jumper

CPUFAN White Fan connector

CMOS Yellow CMOS reset button

System board 51

System board callouts, EliteDesk 705

Sys Bd Label Color Component Sys Bd Label Color Component

SPKR White Speaker connector PSWD Black/blue Password header and

jumper

HSENSE White Hood sensor connector CMOS Yellow CMOS reset button

THERM White Thermal sensor SATA Blue Hard drive data

connector

SSD Black Solid-state module

socket

DIMM3 Black Secondary memory

socket

WLAN Black WLAN module socket DIMM1 Black Primary memory socket

BAT Black RTC battery CPU FAN White Fan connector

52 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

System board callouts, ProDesk 400

Sys Bd Label Color Component Sys Bd Label Color Component

DIMM3 Black Secondary memory

socket

WLAN Black WLAN module socket

DIMM1 Black Primary memory socket BAT Black RTC battery

CPUFAN White Fan connector PSWD Black/blue Password header and

jumper

SPKR White Speaker connector CMOS Yellow CMOS reset button

HSENSE White Hood sensor connector SATA0 Blue Hard drive data

connector

THERM White Thermal sensor PROCESSOR Black Processor socket

SSD Black Solid-state module

socket

System board 53

Internal WLAN antenna cable removal/installation

The antennas route from the WLAN module to the cable connectors on the front and the rear of the computer.

To install the antennas:

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Remove the top cover (Top cover on page 21).

3. Remove the hard drive (Hard drive on page 23).

4. If your model is an EliteDesk 800 or MP9, remove the secondary fan (Secondary fan (EliteDesk 800 and

MP9 models only) on page 26).

5. Remove the drive cage (Drive cage on page 27).

6. Remove the fan (Fan on page 37).

7. Remove the heat sink (Heat sink on page 43).

8. Remove the power switch/light cover (Power switch/light cover on page 38).

9. If applicable, remove the expansion connector board (Expansion connector board on page 48).

10. Remove the thermal sensor (Thermal sensor on page 36).

11. Disconnect the antenna cables from the WLAN module (WLAN module on page 30).

12. Remove the system board (System board on page 49).

13. Remove the antenna cables from their routing paths underneath the keyboard. Note the locations the

cables are taped to the chassis as shown in the following image.

54 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

14. On the rear of the computer, remove the antenna cover by pressing on the tab on the top of the cover

(1), and then rotating the cover o the computer (2).

15. Antenna transceivers are connected to the front and back of the computer as shown in the following

image.

16. Remove the front transceiver from the inside of the computer by pressing the tab to disengage the

transceiver and removing the transceiver (arrow in following image points to the tabs on the inside of

the computer).

Internal WLAN antenna cable removal/installation 55

17. Remove the rear transceiver from the inside of the computer by pressing the tab to disengage the

transceiver and removing the transceiver (arrow in following image points to the tabs on the inside of

the computer).

Reverse the removal procedure to install the WLAN antennas and transceivers.

56 Chapter 4 Removal and replacement procedures – desktop mini (DM) chassis

Changing from desktop to tower conguration

The computer can be used in a tower orientation with an optional tower stand that can be purchased from HP.

1. Prepare the computer for disassembly (Preparation for disassembly on page 20).

2. Orient the computer so that its right side is facing up and place the computer in the optional stand.

NOTE: To stabilize the computer in a tower orientation, HP recommends the use of the optional tower

stand.

3. Reconnect the AC power cord and any external devices, then turn on the computer.

NOTE: Ensure at least 10.2 centimeters (4 inches) of space on all sides of the computer remains clear

and free of obstructions.

4. Lock any security devices that were disengaged when the top cover was removed.

Changing from desktop to tower conguration 57

5 Computer Setup (F10) Utility

Computer Setup (F10) Utilities

Use Computer Setup (F10) Utility to do the following:

●Change settings from the defaults or restore the settings to default values.

●View the system conguration, including settings for processor, graphics, memory, audio, storage,

communications, and input devices.

●Modify the boot order of bootable devices such as hard drives, optical drives, or USB ash media devices.

●(Windows 7 only) Establish an Ownership Tag, the text of which is displayed each time the system is

turned on or restarted.

●Enter the Asset Tag or property identication number assigned by the company to this computer.

●Enable the power-on password prompt during system restarts (warm boots) as well as during power-on.

●Establish an administrator password that controls access to the Computer Setup (F10) Utility and the

settings described in this section.

●Establish minimum requirements for valid passwords, including length and required types of characters.

●Secure integrated I/O functionality, including the serial, USB, or audio, or embedded NIC, so that they

cannot be used until they are unsecured.

●Enable or disable dierent types of boot sources.

●Congure features such as Secure Boot, power management, virtualization support, and language and

keyboard type used in Setup and POST.

●Replicate the system setup by saving system conguration information on a USB device and restoring it

on one or more computers.

●Enable or disable DriveLock security or securely erase a hard drive (when supported by drive).

Using Computer Setup (F10) Utilities

Computer Setup can be accessed only by turning the computer on or restarting the system. To access the

Computer Setup Utilities menu, complete the following steps:

1. Turn on or restart the computer.

2. Repeatedly press F10 when the monitor light turns green to access the utility.

You can also press Esc to a menu that allows you to access dierent options available at startup,

including the Computer Setup utility.

NOTE: If you do not press F10 at the appropriate time, you must restart the computer and again

repeatedly press F10 when the monitor light turns green to access the utility.

3. A choice of four headings appears in the Computer Setup Utilities menu: Main, Security, Advanced, and

UEFI Drivers.

NOTE: Selecting UEFI Drivers restarts the computer into the 3rd party option ROM management

application. You can access this application directly by pressing F3 during startup.

58 Chapter 5 Computer Setup (F10) Utility

4. Use the arrow (left and right) keys to select the appropriate heading. Use the arrow (up and down) keys

to select the option you want, then press Enter. To return to the Computer Setup Utilities menu, press

Esc.

5. To apply and save changes, select Main > Save Changes and Exit.

●If you have made changes that you do not want applied, select Ignore Changes and Exit.

●To restore settings from the Advanced and Main menus to original values, select Apply Factory

Defaults and Exit.

●To restore settings from the Advanced and Main menus to those previously saved by Save Custom

Defaults, select Apply Custom Defaults and Exit. If no custom defaults have been saved, then

factory defaults are used.

NOTE: Settings in the Security menu are not modied by Apply Defaults. Those values are reset by

Restore Security Settings to Factory Defaults at the bottom of the Security menu.

NOTE: Not all settings shown in the following sections are available for all models

CAUTION: Do NOT turn the computer power OFF while the BIOS is saving the Computer Setup (F10) changes

because the settings could become corrupted. It is safe to turn o the computer only after exiting the F10

Setup screen.

Computer Setup (F10) Utilities 59

Computer Setup–Main

NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.

Table 5-1 Computer Setup—Main

Option Description

System Information Lists all information in following list if Advanced System Information is selected. Lists smaller subset if

Basic System Information is selected.

●Product name

●Installed memory size

●Processor type

●Processor cache size (L1/L2/L3)

●Processor speed

●MicroCode Revision

●Processor Stepping

●DIMM size (for each installed module)

●System BIOS version

●ME Firmware version (Intel only)

●Video BIOS version

●Super I/O Firmware version

●Born On Date

●Serial Number

●SKU number

●UUID (Universally Unique Identier)

●Asset Tracking Number

●Feature Byte

●Build ID

●Product Family

●System Board ID

●System Board CT

●Integrated MAC Address

System Diagnostics If the hard drive has the HP Advanced Diagnostics installed, the application will launch. If HP Advanced

Diagnostics is not installed, then a basic version built into the BIOS will provide the capability to perform

the following functions:

●Memory Test

●Hard Drive Check

●Language

Update System BIOS Lets you update the system BIOS from www.hp.com or another network server, from a removable USB

drive, or from a le located on the hard drive.

●‘Check HP.com for BIOS Updates’ or ‘Check the Network for BIOS Updates’

The string that appears here depends on the setting in ‘BIOS Update Preferences’.

60 Chapter 5 Computer Setup (F10) Utility

Table 5-1 Computer Setup—Main (continued)

●Lock BIOS Version

If this option is checked, the system is locked to the current BIOS version and updates are not

allowed.

●BIOS Update Preferences

Allows the administrator to select the source of network updates (www.hp.com or another network

server) and allows conguration of a periodic check for updates, including policies for:

■Check for updates and prompt the user to accept or reject the update at that time

■Check for updates and install all new versions

■Check for updates and install only new versions marked important

●Network Conguration Settings

●Update BIOS Using Local Media

Lets you access les on either USB storage or the hard drive. The HP BIOS Update and Recovery

application included in BIOS Softpaqs at www.hp.com will copy the BIOS le to the correct location

on the hard drive or USB device.

System IDs Lets you set the following values:

●Asset Tracking Number

●Ownership Tag

Replicated Setup Backup current settings to USB device

Saves system conguration to a formatted USB ash media device.

Restore current settings from USB device

Restores system conguration from a USB ash media device.

Save Custom Defaults Saves the current system conguration settings as the custom default set.

Apply Custom Defaults

and Exit

Applies the custom default settings to the computer after rebooting. Does not apply to options in the

Security menu.

Apply Factory Defaults

and Exit

Restores the factory system conguration settings to the computer after rebooting. Does not apply to

options in the Security menu.

Ignore Changes and Exit Exits Computer Setup without applying or saving any changes.

Save Changes and Exit Saves changes to current system conguration, exits Computer Setup, and reboots.

Computer Setup (F10) Utilities 61

Computer Setup—Security

NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.

Table 5-2 Computer Setup—Security

Option Description

Set up BIOS

Administrator Password

Lets you set and enable a BIOS administrator password, which includes the following privileges:

●Manage other BIOS users

●Full access to BIOS policy and settings

●Unlock the computer when other BIOS users fail the preboot authentication.

NOTE: Creating a BIOS user disables the Fast Boot option.

NOTE: If the password is set, it is required to change Computer Setup options, update the BIOS, and

make changes to certain plug and play settings under Windows.

Change BIOS

Administrator Password

(This selection is active

only if a BIOS

administrator password is

set.)

Lets you change the BIOS administrator password.

You must know the current password to be able to change it.

Password Policies Let you set the guidelines for a valid password. Options include:

●Password minimum length

●Requires at least one symbol

●Requires at least one number

●Requires at least one upper case character

●Requires at least one lower case character

●Allow spaces

Clear Password Jumper

Select ‘Honor’ to allow or ‘Ignore’ to not allow the absence of the password jumper to clear the passwords

at boot up. Default is ‘Honor’.

Security Conguration TPM Embedded Security

●TPM Device

Lets you set the Trusted Platform Module as available or hidden.

●TPM State

Select to enable the TPM.

●TPM Clear

Select to reset the TPM to an unowned state. After the TPM is cleared, it is also turned o. To

temporarily suspend TPM operations, turn the TPM o instead of clearing it.

CAUTION: Clearing the TPM resets it to factory defaults and turns it o. You will lose all created

keys and data protected by those keys.

BIOS Sure Start

●Verify Boot Block on every Boot

Select to check validity of boot block region each boot. If not selected, boot block region will be

validated on power cycles.

62 Chapter 5 Computer Setup (F10) Utility

Table 5-2 Computer Setup—Security (continued)

●Data Recovery Policy

Select ‘Automatic’ or ‘Manual’ to set data recovery policy. ‘Manual’ lets you select whether or not to

execute recovery of a corrupted region if it is detected.

Set Up BIOS Power-On

Password

Lets you set and enable a BIOS power-on password. The power-on password prompt appears after a

power cycle or reboot. If the user does not enter the correct power-on password, the unit will not boot.

Change BIOS Power-On

Password

(This selection is active

only if a BIOS power-on

password is set.)

Lets you change the BIOS power-on password.

You must know the current password to be able to change it.

DriveLock Allows you to assign or modify a master or user password for hard drives. When this feature is enabled,

the user is prompted to provide one of the DriveLock passwords during POST. If neither is successfully

entered, the hard drive will remain inaccessible until one of the passwords is successfully provided during

a subsequent cold-boot sequence.

NOTE: This selection will only appear when at least one drive that supports the DriveLock feature is

attached to the system.

CAUTION: Be aware that these settings take place immediately. A save is not necessary.

CAUTION: Be sure to document the DriveLock password. Losing a DriveLock password will render a drive

permanently locked.

After you select a drive, the following options are available:

Set DriveLock Master Password. Sets the drive’s master password but does not enable DriveLock.

Enable DriveLock. Sets the drive’s user password and enables DriveLock.

Secure Erase Lets you select a hard drive to completely erase.

Once a hard drive has been erased with a program that utilizes Secure Erase rmware commands, no le

recovery program, partition recovery program, or other data recovery method will be able to extract data

from the drive.

Save/Restore MBR of the

system hard drive

NOTE: Windows 8.1 and Windows 10 systems are generally not formatted to include an MBR. Instead

they use GUID Partition Table (GPT) format, which better supports large hard drives.

Enabling this feature will save the Master Boot Record (MBR) of the system hard drive. If the MBR gets

changed, the user will be prompted to restore the MBR. Default is disabled.

The MBR contains information needed to successfully boot from a disk and to access the data stored on

the disk. Master Boot Record Security may prevent unintentional or malicious changes to the MBR, such as

those caused by some viruses or by the incorrect use of certain disk utilities. It also allows you to recover

the "last known good" MBR, should changes to the MBR be detected when the system is restarted.

NOTE: Most operating systems control access to the MBR of the current bootable disk; the BIOS cannot

prevent changes that may occur while the operating system is running.

Restores the backup Master Boot Record to the current bootable disk. Default is disabled.

Only appears if all of the following conditions are true:

●MBR security is enabled

●A backup copy of the MBR has been previously saved

●The current bootable disk is the same disk from which the backup copy was saved

CAUTION: Restoring a previously saved MBR after a disk utility or operating system has modied the

MBR, may cause the data on the disk to become inaccessible. Only restore a previously saved MBR if you

are condent that the current bootable disk's MBR has been corrupted or infected with a virus.

Smart Cover Cover Lock (Lock/Unlock)

Computer Setup (F10) Utilities 63

Table 5-2 Computer Setup—Security (continued)

Default is ‘Unlock’.

Cover Removal Sensor (Disabled/Notify user/Administrator password)

Lets you disable the cover sensor or congure what action is taken if the computer cover was removed.

Default is ‘Disabled’.

NOTE: Notify user alerts the user with a POST error on the rst boot after the sensor detects removal of

the cover. If the password is set, Administrator Password requires that the password be entered to boot

the computer if the sensor detects that the cover has been removed.

System Management

Command

Allows authorized personnel to reset security settings during a service event. Default is enabled.

Restore Security

Settings to Default

This action resets security devices, clears BIOS passwords (not including DriveLock), and restores settings

in the Security menu to factory defaults.

Computer Setup—Advanced

NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.

Table 5-3 Computer Setup—Advanced (for advanced users)

Option Heading

Display Language Lets you select the language of the menus in F10 Setup and the keyboard layout.

Scheduled Power-On This feature wakes the system up from a powered o state at a specied date and time.

Boot Options Select the devices that the computer can boot from, as well as other options, including:

●Startup Menu Delay(sec). Enabling this feature will add a user-specied delay to the POST process.

One purpose for the delay is to provide additional time to activate hotkeys such as Esc for the

Startup Menu or F10 for Computer Setup.

●Fast Boot. Default is enabled for Windows 8.1 or later, and disabled for Windows 7 systems.

●CD-ROM Boot. Default is enabled.

●Network (PXE) Boot. Default is enabled.

●Prompt on Memory Size Change. Default is enabled.

●Prompt on Fixed Storage Change. Default is disabled.

●After Power Loss. Default is Power O.

■Power o—causes the computer to remain powered o when power is restored.

■Power on—causes the computer to power on automatically as soon as power is restored.

■Previous state—causes the computer to power on automatically as soon as power is restored,

if it was on when power was lost.

NOTE: If the system is congured to ‘Power On from Keyboard Ports’ (see Power Management

Options), then this setting is forced to ‘Power On’.

●Audio Alerts During Boot. Default is enabled. When disabled, most audible beeps from errors,

warnings, and password prompts during boot up are suppressed.

●UEFI Boot Order.

Default is enabled. Specify the order in which UEFI boot sources (such as a internal hard drive, USB

hard drive, USB optical drive, or internal optical drive) are checked for a bootable operating system

image.

UEFI boot sources always have precedence over legacy boot sources.

64 Chapter 5 Computer Setup (F10) Utility

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)

●Legacy Boot Order

Specify the order in which legacy boot sources (such as a network interface card, internal hard drive,

USB optical drive, or internal optical drive) are checked for a bootable operating system image.

Specify the order of attached hard drives. The rst hard drive in the order will have priority in the

boot sequence and will be recognized as drive C (if any devices are attached).

NOTE: To drag a device to a preferred place, press Enter.

NOTE: MS-DOS drive lettering assignments may not apply after a non-MS-DOS operating system has

started.

Shortcut to Temporarily Override Boot Order

To boot one time from a device other than the default device specied in Boot Order, restart the computer

and press Esc (to access the Startup menu) and then F9 (Boot Menu), or only F9 (skipping the Startup

menu) when the monitor light turns green. After POST is completed, a list of bootable devices is displayed.

Use the arrow keys to select the preferred bootable device and press Enter. The computer then boots

from the selected non-default device for this one time.

Secure Boot

Conguration

Congure Legacy Support and Secure Boot

Legacy Support – Lets you turn o all legacy support on the computer, including booting to DOS, running

legacy graphics cards, booting to legacy devices, and so on. Windows 7 for instance requires legacy

support, whereas Windows 8 does not.

Secure Boot – Lets you make sure an operating system is legitimate before booting to it, making Windows

resistant to malicious modication from preboot to full OS booting, preventing rmware attacks. UEFI and

Windows Secure Boot only allow code signed by pre-approved digital certicates to run during the

rmware and OS boot process.

Default is ‘Legacy Support Enable and Secure Boot Disable’ for Windows 7 and other non-Windows

congurations. Default is ‘Legacy Support Disable and Secure Boot Enable’ for Windows 8.1 and later

congurations.

Secure Boot Key Management

Lets you manage the custom key settings.

Clear Secure Boot Keys

Lets you delete any previously loaded custom boot keys. Clearing keys will disable secure boot. Default is

disabled.

Reset Secure Boot keys to factory defaults

Default is disabled.

Enable MS UEFI CA key

Disabling this setting alters the Secure Boot key list to further restrict the allowed software

components. Set this option to ‘disable’ to support Device Guard.

System Options Congure Storage Controller for RAID (enable/disable)

Lets you enable onboard RAID. Default is disabled.

POST Prompt for RAID Conguration (Intel only)

When disabled, the prompt for ‘RAID option ROM’ in legacy mode is suppressed.

SVM CPU Virtualization (AMD only)

Controls the virtualization features of the processor. Changing this setting requires turning the computer

o and then back on. Default is disabled.

Virtualization Technology (VTx) (Intel only)

Controls the virtualization features of the processor. Changing this setting requires turning the computer

o and then back on. Default is disabled.

Computer Setup (F10) Utilities 65

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)

Virtualization Technology for Directed I/O (VTd) (Intel only)

Controls virtualization DMA remapping features of the chipset. Changing this setting requires turning the

computer o and then back on. Default is disabled.

PCI Express Slot x (enable/disable)

Lets you disable individual expansion slots.

Allow PCIe/PCI SERR# Interrupt (enable/disable)

Allows PCI devices to report PCI/PCIe System Error signals, such as address parity errors, data parity

errors, and critical errors other than parity. Default is enabled.

Power Button Override (disable/4 sec/15 sec)

Lets you disable or enable and select the number of seconds you have to hold down the power button for

it to force the system to power o. Default is ‘4 sec’.

Built-In Device Options Embedded LAN Controller

Select to show the device in the operating system. Default is enabled.

Wake On LAN

Lets you either disable the Wake On LAN feature, or congure where the computer boots, including the

network or hard drive. Default is Boot to Network.

Dust Filter

Select to enable the Dust Filter replacement reminder, which can be set for 15, 30, 60, 90, 120, or 180

days. The reminder will show during POST after the reminder timer has expired.

Video Memory Size

Use this option to manage graphics memory allocation. The value you choose is allocated permanently to

graphics and is unavailable to the operating system.

Audio Device

Select to show the device in the operating system. Default is enabled.

Internal Speakers (does not aect external speakers)

Clear to disable the chassis speaker or speakers. This function is applicable to normal audio playback in

the operating system and does not aect the error or warning beeps during POST. Default is enabled.

Integrated Microphone

Clear to disable the integrated microphone. This does not aect devices plugged into audio jacks. Default

is enabled.

Integrated Camera

Clear to disable the integrated webcam. Default is enabled.

Increase Idle Fan Speed(%)

Sets idle fan speed percentage. This setting only changes the minimum fan speed. The fan is still

automatically controlled.

Fingerprint Device

Select to show the device in the operating system. Default is enabled.

Touch Panel

Clear to disable the display panel touch feature. Default is enabled.

Port Options Allows you to hide the following ports from the operating system:

●Serial port A

66 Chapter 5 Computer Setup (F10) Utility

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)

●Serial port B

●SATA0

●SATA1

●SATA2

●SATA3

●SATA5

●Front USB ports

●Rear USB ports

●USB charging port function

●Media card reader

Restrict USB Devices

Specify the following categories of USB devices to enable:

●Allow all USB devices

●Allow only keyboard and mouse

●Allow all but storage devices and hubs.

When some devices are restricted, the system will disable USB ports that do not meet the allowed

criteria. This feature is usually combined with similar policies within the operating system since USB

devices can be moved to dierent ports. The ports disabled by the BIOS will remain disabled until the

system is restarted.

Option ROM Launch

Policy

These policies control whether Legacy Option ROMs or UEFI drivers are loaded. Default is ‘All legacy’ for

Windows 7 and other non-Windows congurations. Default is ‘All UEFI’ for Windows 8.1 or later.

Congure Option ROM Launch Policy

●All legacy

●All UEFI

●All UEFI except video

Power Management

Options

Runtime Power Management (enable/disable)

Allows certain operating systems to reduce processor voltage and frequency when the current software

load does not require the full capabilities of the processor. Default is enabled.

Extended Idle Power States (enable/disable)

Allows certain operating systems to decrease the processors power consumption when the processor is

idle. Default is enabled.

S5 Maximum Power Savings (enable/disable)

Enabling this feature reduces the power of the system as much as possible in the S5 state. Power is

removed from the wake up circuitry, the expansion slots, and any management features while in S5.

Default is disabled.

SATA Power Management (enable/disable)

Enables or disables SATA bus and/or device power management. Default is enabled.

PCI Express Power Management (enable/disable)

Enabling this option permits the PCI Express links to use Active Power State Management (ASPM) to enter

lower power states while not in use. Default is enabled.

Unique Sleep State Blink Rates (enable/disable)

Computer Setup (F10) Utilities 67

Table 5-3 Computer Setup—Advanced (for advanced users) (continued)

This feature is designed to provide a visual indication of what sleep state the system is in. Each sleep

state has a unique blink pattern. Default is disabled.

NOTE: A normal shutdown goes to the S4 state for Windows 8 or later.

S0 (On) = Solid white LED.

S3 (Stand By)= 3 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) — repeated

cycles of 3 blinks and a pause.

S4 (Hibernation)= 4 blinks at 1Hz (50% duty cycle) followed by a pause of 2 seconds (white LED) —

repeated cycles of 4 blinks and a pause.

S5 (Soft O) = LED is o.

Power On from Keyboard Ports (enable/disable)

When enabled, this feature allows a key press to power on the system when it is o (S5 state). If using a

USB keyboard, it must be plugged into one of the rear ports labeled with the keyboard icon. Default is

disabled.

Remote Management

Options

Active Management (AMT) (Intel only) (enable/disable). Default is enabled.

Allows you to discover, repair, and protect networked computing devices.

USB Key Provisioning Support (enable/disable) Default is disabled.

USB Redirection Support (enable/disable). Default is enabled.

USB redirection allows USB devices plugged into a client computer to be transparently redirected to the

guest operating system.

Uncongure AMT on next boot (Do Not Apply/Apply). Default is ‘Do Not Apply’.

SOL Terminal Emulation Mode (ANSI / VT100). Default is ANSI.

SOL terminal emulation mode is only activated during remote AMT redirection operations. The emulation

options allow administrators to select which mode works best with their console.

Show Uncongure ME Conrmation Prompt (enable/disable). Default is enabled.

Verbose Boot Messages (enable/disable). Default is enabled.

Verbose boot shows additional logging information during the boot. mainly for debugging if something

goes wrong during bootup.

Watchdog Timer (enable/disable). Default is enabled.

Allows you to set amount of time for a operating system and BIOS watchdog alert to be sent if the timers

are not deactivated. BIOS watchdog is deactivated by BIOS and would indicate that a halt occurred during

execution if the alert is sent to the management console. An operating system alert is deactivated by the

operating system image and would indicate that a hang occurred during its initialization.

●OS Watchdog Timer (min.) – (5/10/15/20/25). Default is 5 min.

●BIOS Watchdog Timer (min.) – (5/10/15/20/25). Default is 5 min.

CIRA Timeout (min.) (1/2/3/4/Never)

CIRA is Customer Initiated Remote Assistance, an Intel service to help users employing Active

Management Technology (AMT).

68 Chapter 5 Computer Setup (F10) Utility

Recovering the Conguration Settings

This method of recovery requires that you rst perform the Save to Removable Media command with the

Computer Setup (F10) Utility before Restore is needed. (See Computer Setup–Main on page 60 in the

Computer Setup—File table.)

The Save to Removable Media option creates a le named HPSETUP.TXT on an inserted USB ash media

device. This le can be edited to change the settings on Restore. An asterisk (*) marks the selected option for

a setting.

NOTE: It is recommended that you save any modied computer conguration settings to a USB ash media

device and save the device for possible future use.

To restore the conguration, insert the USB ash media device with the saved conguration and perform the

Restore from Removable Media command with the Computer Setup (F10) Utility. (See Computer Setup–Main

on page 60 in the Computer Setup—File table.)

Recovering the Conguration Settings 69

6 Troubleshooting without diagnostics

This chapter provides information on how to identify and correct minor problems, such as USB devices, hard

drive, optical drive, graphics, audio, memory, and software problems. If you encounter problems with the

computer, refer to the tables in this chapter for probable causes and recommended solutions.

NOTE: For information on specic error messages that may appear on the screen during Power-On Self-Test

(POST) at startup, refer to POST error messages and diagnostic front panel LEDs and audible codes

on page 102.

Safety and comfort

WARNING! Misuse of the computer or failure to establish a safe and comfortable work environment may

result in discomfort or serious injury. Refer to the Safety & Comfort Guide at http://www.hp.com/ergo for

more information on choosing a workspace and creating a safe and comfortable work environment. For more

information, refer to the Safety & Regulatory Information guide.

Before you call for technical support

If you are having problems with the computer, try the appropriate solutions below to try to isolate the exact

problem before calling for technical support.

●Run the HP diagnostic tool.

●Run the hard drive self-test in Computer Setup. Refer to Computer Setup (F10) Utility on page 58 for

more information.

●Check the Power LED on the front of the computer to see if it is ashing red. The ashing lights are error

codes that will help you diagnose the problem. Refer to POST error messages and diagnostic front panel

LEDs and audible codes on page 102 for more information.

●If the screen is blank, plug the monitor into a dierent video port on the computer if one is available. Or,

replace the monitor with a monitor that you know is functioning properly.

●If you are working on a network, plug another computer with a dierent cable into the network

connection. There may be a problem with the network plug or cable.

●If you recently added new hardware, remove the hardware and see if the computer functions properly.

●If you recently installed new software, uninstall the software and see if the computer functions properly.

●Boot the computer to the Safe Mode to see if it will boot without all of the drivers loaded. When booting

the operating system, use “Last Known Conguration.”

●Refer to the comprehensive online technical support at http://www.hp.com/support.

●Refer to Helpful hints on page 71 in this guide.

To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self-

solve diagnostics. If you need to contact HP support, use HP Instant Support Professional Edition's online chat

feature. Access HP Instant Support Professional Edition at: http://www.hp.com/go/ispe.

Access the Business Support Center (BSC) at http://www.hp.com/go/bizsupport for the latest online support

information, software and drivers, proactive notication, and worldwide community of peers and HP experts.

70 Chapter 6 Troubleshooting without diagnostics

If it becomes necessary to call for technical assistance, be prepared to do the following to ensure that your

service call is handled properly:

●Be in front of your computer when you call.

●Write down the computer serial number, product ID number, and monitor serial number before calling.

●Spend time troubleshooting the problem with the service technician.

●Remove any hardware that was recently added to your system.

●Remove any software that was recently installed.

●Restore the system from the Recovery Disc Set that you created or restore the system to its original

factory condition in System Software Requirement Disks (SSRD).

CAUTION: Restoring the system will erase all data on the hard drive. Be sure to back up all data les before

running the restore process.

NOTE: For sales information and warranty upgrades (Care Packs), call your local authorized service provider

or dealer.

Helpful hints

If you encounter problems with the computer, monitor, or software, see the following list of general

suggestions before taking further action:

●Check that the computer and monitor are plugged into a working electrical outlet.

●Check that the voltage select switch (some models) is set to the appropriate voltage for your region

(115V or 230V).

●Check that the computer is turned on and the white power light is on.

●Check that the monitor is turned on and the green monitor light is on.

●Check the Power LED on the front of the computer to see if it is ashing red. The ashing lights are error

codes that will help you diagnose the problem. Refer to POST error messages and diagnostic front panel

LEDs and audible codes on page 102 for more information.

●Turn up the brightness and contrast controls of the monitor if the monitor is dim.

●Press and hold any key. If the system beeps, then the keyboard should be operating correctly.

●Check all cable connections for loose connections or incorrect connections.

●Wake the computer by pressing any key on the keyboard or pressing the power button. If the system

remains in suspend mode, shut down the computer by pressing and holding the power button for at

least four seconds then press the power button again to restart the computer. If the system will not shut

down, unplug the power cord, wait a few seconds, then plug it in again. The computer will restart if it is

set to power on automatically as soon as power is restored in Computer Setup. If it does not restart,

press the power button to start the computer.

●Recongure the computer after installing a non-plug and play expansion board or other option. See

Solving Hardware Installation Problems on page 90 for instructions.

●Be sure that all the needed device drivers have been installed. For example, if you are using a printer,

you need a driver for that model printer.

●Remove all bootable media (CD/DVD or USB device) from the system before turning it on.

Helpful hints 71

●If you have installed an operating system other than the factory-installed operating system, check to be

sure that it is supported on the system.

●If the system has multiple video sources (embedded, PCI, or PCI-Express adapters) installed (embedded

video on some models only) and a single monitor, the monitor must be plugged into the monitor

connector on the source selected as the primary VGA adapter. During boot, the other monitor connectors

are disabled and if the monitor is connected into these ports, the monitor will not function. You can

select which source will be the default VGA source in Computer Setup.

CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the

system board. You must disconnect the power cord from the power source before opening the computer to

prevent system board or component damage.

Solving general problems

You may be able to easily resolve the general problems described in this section. If a problem persists and you

are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact an

authorized dealer or reseller.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system

board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect

the power cord from the wall outlet and allow the internal system components to cool before touching.

Cannot access the Computer Setup (F10) Utility when booting the computer.

Cause Solution

The Computer Setup (F10) Utility is set to “fast boot” causing the

F10 access screen to display too briey when booting the

computer.

Before turning on the computer, press and hold F10. Turn on the

computer and continue to hold F10 until the Computer Setup

(F10) Utility is displayed.

- or –

Follow the Windows instructions for rebooting the computer into

the Computer Setup (F10) Utility.

Computer appears locked up and will not turn o when the power button is pressed.

Cause Solution

Software control of the power switch is not functional. 1. Press and hold the power button for at least four seconds

until the computer turns o.

2. Disconnect the power cord from the electrical outlet.

Computer will not respond to keyboard or mouse.

Cause Solution

Computer is in Sleep state. To resume from Sleep state, press the power button.

CAUTION: When attempting to resume from Sleep state, do not

hold down the power button for more than four seconds.

Otherwise, the computer will shut down and you will lose any

unsaved data.

System has locked up. Restart computer.

72 Chapter 6 Troubleshooting without diagnostics

Computer date and time display is incorrect.

Cause Solution

RTC (real-time clock) battery may need to be replaced.

NOTE: Connecting the computer to a live AC outlet prolongs the

life of the RTC battery.

Reset the date and time under Control Panel (Computer Setup

can also be used to update the RTC date and time). If the problem

persists, replace the RTC battery. See the Removal and

Replacement section for instructions on installing a new battery,

or contact an authorized dealer or reseller for RTC battery

replacement.

To access Control Panel in Windows 7, select Start, and then

select Control Panel.

To access Control Panel in Windows 8.1, from the Start screen,

type c, and then select Control Panel from the list of

applications.

To access Control Panel in Windows 10, type control panel in

the taskbar search box, and then select Control Panel.

There is no sound or sound volume is too low.

Cause Solution

System volume may be set low or muted. 1. Check the Computer Setup settings to make sure the

internal system speaker is not muted (this setting does not

aect the external speakers).

2. Make sure the external speakers are properly connected and

powered on and that the speakers' volume control is set

correctly.

3. Use the system volume control available in the operating

system to make sure the speakers are not muted or to

increase the volume.

Cannot remove computer cover or access panel.

Cause Solution

Smart Cover Lock, featured on some computers, is locked. Unlock the Smart Cover Lock using Computer Setup.

In case of forgotten password, power loss, or computer

malfunction, you must manually disable the Smart Cover lock . A

key to unlock the Smart Cover Lock is not available from HP. Keys

are typically available from a hardware store.

Poor performance.

Cause Solution

Processor is too hot. 1. Make sure airow to the computer is not blocked. Leave a

10.2-cm (4-inch) clearance on all vented sides of the

computer and above the monitor to permit the required

airow.

2. Make sure fans are connected and working properly (some

fans only operate when needed).

Solving general problems 73

Poor performance.

Cause Solution

3. Make sure the processor heat sink is installed properly.

Hard drive is full. Transfer data from the hard drive to create more space on the

hard drive.

Low on memory. Add more memory.

Hard drive fragmented. Defragment hard drive.

Program previously accessed did not release reserved memory

back to the system.

Restart the computer.

Virus resident on the hard drive. Run virus protection program.

Too many applications running. 1. Close unnecessary applications to free up memory.

2. Add more memory.

3. Some applications run in the background and can be closed

by right-clicking on their corresponding icons in the task

tray. To prevent these applications from launching at

startup:

In Windows 7:

a. Go to Start > All Programs > Accessories > Run

b. Type msconfig, and then press Enter.

c. On the Startup tab of the System Conguration Utility,

clear applications that you do not want to launch

automatically, and the click OK.

In Windows 8.1:

a. On the Start screen, right-click, and then select the All

apps icon.

b. Under Windows System, click Run.

c. Type msconfig, and then press Enter.

d. On the Startup tab of the System Conguration Utility,

clear applications that you do not want to launch

automatically, and the click OK.

In Windows 10:

a. Type msconfig in the taskbar search box, and then

select mscong.

b. On the Startup tab of the System Conguration Utility,

click Open Task Manager.

c. Select applications that you do not want to launch

automatically, and the click Disable.

Some software applications, especially games, are stressful on

the graphics subsystem.

1. Lower the display resolution for the current application or

consult the documentation that came with the application

for suggestions on how to improve performance by

adjusting parameters in the application.

2. Add more memory.

3. Upgrade the graphics solution.

Cause unknown. Restart the computer.

74 Chapter 6 Troubleshooting without diagnostics

Computer powered o automatically and the Power LED ashes red four times and then white two times.

Cause Solution

Processor thermal protection activated:

A fan may be blocked or not turning.

The heat sink is not properly attached to the processor.

1. Ensure that the computer air vents are not blocked and the

processor cooling fan is running.

2. Open the access panel, press the power button, and see if

the processor fan (or other system fan) spins. If the fan does

not spin, make sure the fan cable is plugged onto the system

board header.

3. If fan a plugged in and not spinning, replace it.

System does not power on and the LEDs on the front of the computer are not ashing.

Cause Solution

System unable to power on. Press and hold the power button for less than 4 seconds. If the

hard drive LED turns white, then:

1. If equipped with a voltage selector, check that the voltage

selector (located on the rear of the power supply) is set to

the appropriate voltage. Proper voltage setting depends on

your region.

2. Remove the expansion cards one at a time until the 5V_aux

light on the system board turns on.

3. Replace the system board.

Press and hold the power button for less than 4 seconds. If the

hard drive LED does not turn on white then:

1. Check that the unit is plugged into a working AC outlet.

2. Open the access panel and check that the power button

cable is properly connected to the system board.

3. Check that the power supply cables are properly connected

to the system board.

4. Check to see if the 5V_aux light on the system board is

turned on. If it is turned on, then replace the power button

assembly.

5. If the 5V_aux light on the system board is o, then replace

the power supply.

6. Replace the system board.

Solving general problems 75

Solving power problems

Common causes and solutions for power problems are listed in the following table.

Power supply shuts down intermittently.

Cause Solution

If equipped with a voltage selector, voltage selector switch on

rear of computer chassis (some models) not switched to correct

line voltage (115V or 230V).

Select the proper AC voltage using the selector switch.

Power supply will not turn on because of internal power supply

fault.

Replace the power supply.

Computer powered o automatically and the Power LED ashes Red two times, once every second, followed by a two second

pause, and the computer beeps two times. (Beeps stop after fth iteration but LEDs continue ashing.)

Computer powered o automatically and the Power LED ashes red four times and then white two times.

Cause Solution

Processor thermal protection activated:

A fan may be blocked or not turning.

The heat sink is not properly attached to the processor.

1. Ensure that the computer air vents are not blocked and the

processor cooling fan is running.

2. Open the access panel, press the power button, and see if

the processor fan (or other system fan) spins. If the fan does

not spin, make sure the fan cable is plugged onto the system

board header.

3. If fan a plugged in and not spinning, replace it.

Power LED ashes Red four times, once every second, followed by a two second pause, and the computer beeps four times. (Beeps

stop after fth iteration but LEDs continue ashing.)

Computer powered o automatically and the Power LED ashes red three times and then white four times.

Cause Solution

Power failure (power supply is overloaded). 1. If equipped with a voltage selector, check that the voltage

selector, located on the rear of the power supply (some

models), is set to the appropriate voltage. Proper voltage

setting depends on your region.

2. Open the access panel and ensure the power supply cable is

seated into the connector on the system board.

3. Check if a device is causing the problem by removing ALL

attached devices (such as hard drives or optical drives and

expansion cards). Power on the system. If the system enters

POST, then power o and replace one device at a time and

repeat this procedure until failure occurs. Replace the device

that is causing the failure. Continue adding devices one at a

time to ensure all devices are functioning properly.

4. Replace the power supply.

5. Replace the system board.

76 Chapter 6 Troubleshooting without diagnostics

Solving hard drive problems

Hard drive error occurs.

Cause Solution

Hard disk has bad sectors or has failed. 1. In Windows 7, click Start, click Computer, and right-click on

a drive. Select Properties, and then select the Tools tab.

Under Error-checking click Check Now.

In Windows 8.1, on the Start screen type e, and then select

File Explorer from the list of applications. In the left

column, expand Computer, right-click on a drive, select

Properties, and then select the Tools tab. Under Error

checking click Check.

In Windows 10, type file in the taskbar search box, and

then select File Explorer from the list of applications. In the

left column, expand This PC, right-click on a drive, select

Properties, and then select the Tools tab. Under Error

checking click Check.

2. Use a utility to locate and block usage of bad sectors. If

necessary, reformat the hard disk.

Disk transaction problem.

Cause Solution

Either the directory structure is bad or there is a problem with a

le.

In Windows 7, click Start, expand Computer, and right-click on a

drive. Select Properties, and then select the Tools tab. Under

Error-checking click Check Now.

In Windows 8.1, on the Start screen type e, and then click File

Explorer from the list of applications. In the left column, expand

Computer, right-click on a drive, select Properties, and then

select the Tools tab. Under Error checking click Check.

In Windows 10, type file in the taskbar search box, and then

select File Explorer from the list of applications. In the left

column, expand This PC, right-click on a drive, select Properties,

and then select the Tools tab. Under Error checking click Check.

Drive not found (identied).

Cause Solution

Cable could be loose. Check cable connections.

The system may not have automatically recognized a newly

installed device.

See reconguration directions in the Solving Hardware

Installation Problems on page 90 section. If the system still

does not recognize the new device, check to see if the device is

listed within Computer Setup. If it is listed, the probable cause is a

driver problem. If it is not listed, the probable cause is a hardware

problem.

If this is a newly installed drive, run the Computer Setup utility

and try adding a POST delay under Advanced > Boot Options.

Solving hard drive problems 77

Drive not found (identied).

Cause Solution

The device is attached to a SATA port that has been hidden in

Computer Setup.

Run the Computer Setup utility and ensure Device Available is

selected for the device's SATA port in Advanced > Port Options.

Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >

Boot Options.

Nonsystem disk/NTLDR missing message.

Cause Solution

The system is trying to start from the hard drive but the hard

drive may have been damaged.

▲Perform Drive Protection System (DPS) testing in system

ROM.

System les missing or not properly installed. 1. Insert bootable media and restart the computer.

2. Boot to the windows installation media and select the

recovery option. If only a restore kit is available, then select

the File Backup Program option, and then restore the

system.

3. Install system les for the appropriate operating system.

Hard drive boot has been disabled in Computer Setup. Run the Computer Setup utility and enable the hard drive entry in

the Advanced > Boot Options list.

Bootable hard drive is not attached as rst in a multi-hard drive

conguration.

If attempting to boot from a hard drive, ensure it is attached to

the system board dark blue SATA connector.

Bootable hard drive is not listed rst in the Boot Order. Run the Computer Setup utility and select Advanced > Boot

Options and ensure the bootable hard drive is listed immediately

under the Hard Drive entry.

Computer will not boot from hard drive.

Cause Solution

The device is attached to a SATA port that has been hidden in

Computer Setup.

1. Check SATA cable connections.

2. Run the Computer Setup utility and ensure Device Available

is selected for the device's SATA port in Advanced > Port

Options.

Boot order is not correct. Run the Computer Setup utility and change boot sequence in

Advanced > Boot Options.

Hard drive is damaged. Observe if the front panel Power LED is blinking RED and if any

beeps are heard. See POST error messages and diagnostic front

panel LEDs and audible codes on page 102 to determine possible

causes for the blinking red and beep codes.

See the Worldwide Limited Warranty for terms and conditions.

78 Chapter 6 Troubleshooting without diagnostics

Computer seems to be locked up.

Cause Solution

Program in use has stopped responding to commands. 1. Use the task manager to close programs that do not

respond.

2. Attempt the normal Windows “Shut Down” procedure. If this

fails, press the power button for four or more seconds to

turn o the power. To restart the computer, press the power

button again.

Solving media card reader problems

Media card will not work in a digital camera after formatting it in Windows.

Cause Solution

By default, Windows will format any media card with a capacity

greater than 32MB with the FAT32 format. Some digital cameras

use the FAT (FAT16 & FAT12) format and can not operate with a

FAT32 formatted card.

Either format the media card in the digital camera or select FAT

le system to format the media card in a computer with Windows.

A write-protected or locked error occurs when attempting to write to the media card.

Cause Solution

Media card is locked. Locking the media card is a safety feature

that prevents writing to and deleting from an SD/Memory

Stick/PRO card.

If using an SD card, make sure that the lock tab located on the

right of the SD card is not in the locked position. If using a Memory

Stick/PRO card, make sure that the lock tab located on the bottom

of the Memory Stick/PRO card is not in the locked position.

Can not write to the media card.

Cause Solution

The media card is a read-only memory (ROM) card. Check the manufacturer’s documentation included with your card

to see if it writable. Refer to the previous section for a list of

compatible cards.

Media card is locked. Locking the media card is a safety feature

that prevents writing to and deleting from an SD/Memory

Stick/PRO card.

If using an SD card, make sure that the lock tab located on the

right of the SD card is not in the locked position. If using a Memory

Stick/PRO card, make sure that the lock tab located on the bottom

of the Memory Stick/PRO card is not in the locked position.

Unable to access data on the media card after inserting it into a slot.

Cause Solution

The media card is not inserted properly, is inserted in the wrong

slot, or is not supported.

Ensure that the card is inserted properly with the gold contact on

the correct side. The green LED will light if inserted properly.

Solving media card reader problems 79

Do not know how to remove a media card correctly.

Cause Solution

The computer’s software is used to safely eject the card. In Windows 7, click Start, select Computer, right-click on the

corresponding drive icon, and then select Eject. Pull the card out

of the slot.

In Windows 8.1, on the Start screen, type e, and then click File

Explorer from the list of applications. Expand Computer, right-

click on the corresponding drive icon, and then select Eject. Pull

the card out of the slot.

In Windows 10, type file in the taskbar search box, and then

select File Explorer from the list of applications. In the left

column, expand This PC, right-click on the corresponding drive

icon, and then select Eject. Pull the card out of the slot.

NOTE: Never remove the card when the green LED is ashing

After installing the media card reader and booting to Windows, the reader and the inserted cards are not recognized by the

computer.

Cause Solution

The operating system needs time to recognize the device if the

reader was just installed into the computer and you are turning

the PC on for the rst time.

Wait a few seconds so that the operating system can recognize

the reader and the available ports, and then recognize the media

inserted in the reader.

After inserting a media card in the reader, the computer attempts to boot from the media card.

Cause Solution

The inserted media card has boot capability. 1. If you do not want to boot from the media card, remove it

during boot or do not select the option to boot from the

inserted media card during the boot process.

2. During POST (Power On Self-Test), press F9 to modify the

boot menu.

3. Change the boot sequence in F10 Computer Setup.

Solving display problems

If you encounter display problems, see the documentation that came with the monitor and to the common

causes and solutions listed in the following table.

Blank screen (no video).

Cause Solution

Monitor is not turned on and the monitor light is not on. Turn on the monitor and check that the monitor light is on.

Bad monitor. Try a dierent monitor.

The cable connections are not correct. Check the cable connection from the monitor to the computer and

to the electrical outlet.

80 Chapter 6 Troubleshooting without diagnostics

Blank screen (no video).

Cause Solution

You may have a screen blanking utility installed or energy saver

features are enabled.

Press any key or click the mouse button and type your password

(if set).

System ROM is corrupted; system is running in Boot Block

Emergency Recovery Mode (indicated by eight beeps).

Reash the system ROM with the latest BIOS image.

You are using a xed-sync monitor and it will not sync at the

resolution chosen.

Be sure that the monitor can accept the same horizontal scan rate

as the resolution chosen.

Computer is in Sleep state. Press the power button to resume from Sleep state.

CAUTION: When attempting to resume from Sleep state, do not

hold down the power button for more than four seconds.

Otherwise, the computer will shut down and you will lose any

unsaved data.

Monitor cable is plugged into the wrong connector. Systems may have a monitor connection on both the

motherboard or an add-in card. Try moving the monitor

connection to a dierent connector on the back of the computer

Monitor settings in the computer are not compatible with the

monitor.

1. In Control Panel, select Category from the View by list, then

under Appearance and Personalization, select Adjust

screen resolution.

To access Control Panel in Windows 7, click Start, and then

select Control Panel.

To access Control Panel in Windows 8.1, from the Start

screen, type c, and then select Control Panel from the list of

applications.

To access Control Panel in Windows 10, type control

panel in the taskbar search box, and then select Control

Panel from the list of applications.

2. Expand the Resolution box, and then use the sliding control

to reset the resolution.

Monitor is congured to use an input that is not active. Use the monitor's on-screen menu controls to select the input

that is being driven by the system. Refer to the monitor's user

documentation for more information on the on-screen controls

and settings.

Blank screen and the power LED ashes Red ve times, once every second, followed by a two second pause, and the computer

beeps ve times. (Beeps stop after fth iteration but LEDs continue ashing.)

Cause Solution

Pre-video memory error. 1. Reseat DIMMs. Power on the system.

2. Replace DIMMs one at a time to isolate the faulty module.

3. Replace third-party memory with HP memory.

4. Replace the system board.

Solving display problems 81

Blank screen and the power LED ashes Red six times, once every second, followed by a two second pause, and the computer

beeps six times. (Beeps stop after fth iteration but LEDs continue ashing.)

Cause Solution

Pre-video graphics error. For systems with a graphics card:

1. Reseat the graphics card (if applicable). Power on the

system.

2. Replace the graphics card (if applicable).

3. Replace the system board.

For systems with integrated graphics, replace the system board.

Blank screen and the power LED ashes Red seven times, once every second, followed by a two second pause, and the computer

beeps seven times. (Beeps stop after fth iteration but LEDs continue ashing.)

Cause Solution

System board failure (ROM detected failure prior to video). Replace the system board.

Monitor does not function properly when used with energy saver features.

Cause Solution

Monitor without energy saver capabilities is being used with

energy saver features enabled.

Disable monitor energy saver feature.

Dim characters.

Cause Solution

The brightness and contrast controls are not set properly. Adjust the monitor brightness and contrast controls.

Cables are not properly connected. Check that the graphics cable is securely connected to the

graphics card (if applicable) or video connector and the monitor.

Blurry video or requested resolution cannot be set.

Cause Solution

If the graphics controller was upgraded, the correct graphics

drivers may not be loaded.

Install the video drivers included in the upgrade kit.

Monitor is not capable of displaying requested resolution. Change requested resolution.

Graphics card is bad. Replace the graphics card.

82 Chapter 6 Troubleshooting without diagnostics

The picture is broken up, rolls, jitters, or ashes.

Cause Solution

The monitor connections may be incomplete or the monitor may

be incorrectly adjusted.

1. Be sure the monitor cable is securely connected to the

computer.

2. In a two-monitor system or if another monitor is in close

proximity, be sure the monitors are not interfering with each

other’s electromagnetic eld by moving them apart.

3. Fluorescent lights or fans may be too close to the monitor.

Monitor needs to be degaussed. Degauss the monitor. Refer to the documentation that came with

the monitor for instructions.

Image is not centered.

Cause Solution

Position may need adjustment. Press the monitor's Menu button to access the OSD menu. Select

ImageControl/ Horizontal Position or Vertical Position to adjust

the horizontal or vertical position of the image.

“No Connection, Check Signal Cable” displays on screen.

Cause Solution

Monitor video cable is disconnected. Connect the video cable between the monitor and computer.

CAUTION: Ensure that the computer power is o while

connecting the video cable.

“Out of Range” displays on screen.

Cause Solution

Video resolution and refresh rate are set higher than what the

monitor supports.

Restart the computer and enter Safe Mode. Change the settings to

a supported setting then restart the computer so that the new

settings take eect.

To enter Safe Mode in Windows 7:

1. Restart the computer.

2. Press and hold the F8 key as your computer restarts, before

the Windows logo appears. If the Windows logo appears,

you must restart the computer and try again.

3. On the Advanced Boot Options screen, use the arrow keys to

highlight the safe mode option you want, and then press

Enter.

4. Log on to your computer with a user account that has

administrator rights.

When your computer is in safe mode, Safe Mode displays in

the corners of your monitor. To exit safe mode, restart your

computer and let Windows start normally.

To enter Safe Mode in Windows 8.1:

Solving display problems 83

“Out of Range” displays on screen.

Cause Solution

1. Press the Windows logo + l to open the Settings charm.

2. Select Change PC Settings, select General, and then under

Advanced startup, click Restart now.

3. Select Troubleshoot, select Advanced options, select

Startup Settings, and then click Restart.

4. Use the function keys or number keys to select the safe

mode option you want.

When your computer is in safe mode, Safe Mode displays in

the corners of your monitor. To exit safe mode, restart your

computer and let Windows start normally.

To enter Safe Mode in Windows 10:

1. Log into the computer using an Administrator account.

2. Type msconfig in the taskbar search box, and then select

mscong from the list of applications.

3. Click the Boot tab, select Safe boot and then click OK.

High pitched noise coming from inside a at panel monitor.

Cause Solution

Brightness and/or contrast settings are too high. Lower brightness and/or contrast settings.

Fuzzy focus; streaking, ghosting, or shadowing eects; horizontal scrolling lines; faint vertical bars; or unable to center the

picture on the screen (at panel monitors using an analog VGA input connection only).

Cause Solution

Flat panel monitor’s internal digital conversion circuits may be

unable to correctly interpret the output synchronization of the

graphics card.

1. Select the monitor’s Auto-Adjustment option in the

monitor’s on-screen display menu.

2. Manually synchronize the Clock and Clock Phase on-screen

display functions. To download a SoftPaq that will assist you

with the synchronization, go to the following Web site,

select the appropriate monitor, and download either

SP32347 or SP32202: http://www.hp.com/support

Graphics card is not seated properly or is bad (some models). 1. Reseat the graphics card.

2. Replace the graphics card.

Certain typed symbols do not appear correct.

Cause Solution

The font you are using does not support that particular symbol. Use the Character Map to locate and select the appropriate

symbol. You can copy the symbol from the Character Map into a

document.

84 Chapter 6 Troubleshooting without diagnostics

Certain typed symbols do not appear correct.

Cause Solution

In Windows 7, click Start, select All Programs, select Accessories,

select System Tools, and then select Character Map.

In Windows 8.1, on the Start screen, type ch, and then select

Character Map from the list of applications.

In Windows 10, type ch in the taskbar search box, and then select

Character Map from the list of applications.

Solving audio problems

If the computer has audio features and you encounter audio problems, see the common causes and solutions

listed in the following table.

Sound cuts in and out.

Cause Solution

Processor resources are being used by other open applications. Shut down all open processor-intensive applications.

Sound does not come out of the speaker or headphones.

Cause Solution

Software volume control is turned down or muted. Double-click the Speaker icon on the taskbar, then make sure

that Mute is not selected and use the volume slider to adjust the

volume.

NOTE: In Windows 8.1, the taskbar is available at the bottom of

the Desktop screen.

Audio is hidden in Computer Setup. Enable the audio in Computer Setup: Advanced > Built-in Device

Options.

The external speakers are not turned on. Turn on the external speakers.

The audio device may be connected to the wrong jack. Ensure that the device is connected to the correct jack on the

computer. The rear audio jack output is the green receptacle. The

speakers should be plugged into the line-out jack and the

headphones should be plugged into the headphone jack.

External speakers plugged into the wrong audio jack on a recently

installed sound card.

See the sound card documentation for proper speaker connection.

The rear audio jack output is the green receptacle.

Headphones or devices connected to the line-out connector mute

the internal speaker.

Turn on and use headphones or external speakers, if connected,

or disconnect headphones or external speakers.

Computer is in Sleep state. Press the power button to resume from Sleep state.

CAUTION: When attempting to resume from Sleep state, do not

hold down the power button for more than four seconds.

Otherwise, the computer will shut down and you will lose any

unsaved data.

Internal speaker is disabled in Computer Setup. Enable the internal speaker in Computer Setup. Select Advanced >

Built-in Device Options.

Solving audio problems 85

Sound does not come out of the speaker or headphones.

Cause Solution

The application is set to use a dierent audio device than

speakers.

Some graphics cards support audio over the DisplayPort

connection (if applicable), so multiple audio devices may be listed

in Device Manager. Make sure the correct device is being used.

To access Device Manager in Windows 7, click Start, select Control

Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start screen,

type c, select Control Panel from the list of applications, and then

select Device Manager.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

Some applications can select which audio output device is used. Make sure the application has selected the correct audio device.

The operating system controls may be set to use a dierent audio

device as the default output device than what is expected.

Set the operating system to use the correct audio device.

Sound from headphones is not clear or mued.

Cause Solution

Headphones are plugged into the rear audio output connector.

The rear audio output connector is for powered audio devices and

is not designed for headphone use.

Plug the headphones into the headphone connector on the front

of the computer.

Computer appears to be locked up while recording audio.

Cause Solution

The hard disk may be full. Before recording, make sure there is enough free space on the

hard disk. You can also try recording the audio le in a

compressed format.

Line-in jack is not functioning properly.

Cause Solution

Jack has been recongured in the audio driver or application

software.

In the audio driver or application software, recongure the jack or

set the jack to its default value.

There is no sound or sound volume is too low.

Cause Solution

The application is set to use a dierent audio device than

speakers.

Some graphics cards support audio over the DisplayPort

connection (if applicable), so multiple audio devices may be listed

in Device Manager. Make sure the correct device is being used.

To access Device Manager in Windows 7, click Start, select Control

Panel, and then select Device Manager.

86 Chapter 6 Troubleshooting without diagnostics

There is no sound or sound volume is too low.

Cause Solution

To access Device Manager in Windows 8.1, from the Start screen,

type c, select Control Panel from the list of applications, and then

select Device Manager.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

Some applications can select which audio output device is used. Make sure the application has selected the correct audio device.

The operating system controls may be set to use a dierent audio

device as the default output device than what is expected.

Set the operating system to use the correct audio device.

Solving printer problems

If you encounter printer problems, see the documentation that came with the printer and to the common

causes and solutions listed in the following table.

Printer will not print.

Cause Solution

Printer is not turned on and online. Turn the printer on and make sure it is online.

The correct printer drivers for the application are not installed. 1. Install the correct printer driver for the application.

2. Try printing using the MS-DOS command:

DIR C:\ > [printer port]

where [printer port] is the address of the printer being

used. If the printer works, reload the printer driver.

To run MS-DOS commands, press the Windows key + r, type cmd

in the Open box, and then click OK.

If you are on a network, you may not have made the connection

to the printer.

Make the proper network connections to the printer.

Printer may have failed. Run printer self-test.

Printer will not turn on.

Cause Solution

The cables may not be connected properly. Reconnect all cables and check the power cord and electrical

outlet.

Printer prints garbled information.

Cause Solution

The correct printer driver for the application is not installed. Install the correct printer driver for the application.

Solving printer problems 87

Printer prints garbled information.

Cause Solution

The cables may not be connected properly. Reconnect all cables.

Printer memory may be overloaded. Reset the printer by turning it o for one minute, then turn it back

on.

Printer will not print.

Cause Solution

The printer may be out of paper. Check the paper tray and rell it if it is empty.

Solving keyboard and mouse problems

If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to

the common causes and solutions listed in the following table.

A wireless keyboard/mouse is not working correctly. Symptoms include lagging mouse movement, jumpy mouse/keyboard, or no

function of mouse/keyboard and external drive.

Cause Solution

If your computer is equipped with USB 3.0 ports, connected USB

3.0 devices can interfere with the wireless keyboard USB receiver.

Connect the wireless keyboard USB receiver to a USB 2.0 port that

is separated from ports with USB 3.0 devices. If you still

experience interference, you may have to place the connectors

farther apart using an external USB hub.

Keyboard commands and typing are not recognized by the computer.

Cause Solution

Keyboard connector is not properly connected. Shut down the computer, reconnect the keyboard to the back of

the computer, and then restart the computer.

Program in use has stopped responding to commands. Shut down your computer using the mouse and then restart the

computer.

Keyboard needs repairs. See the Worldwide Limited Warranty for terms and conditions.

Computer is in Sleep state. Press the power button to resume from Sleep state.

CAUTION: When attempting to resume from Sleep date, do not

hold down the power button for more than four seconds.

Otherwise, the computer will shut down and you will lose any

unsaved data.

Mouse does not respond to movement or is too slow.

Cause Solution

Mouse connector is not properly plugged into the back of the

computer.

Shut down the computer using the keyboard.

Windows 7:

88 Chapter 6 Troubleshooting without diagnostics

Mouse does not respond to movement or is too slow.

Cause Solution

1. Press the Ctrl and Esc keys at the same time (or press the

Windows logo key) to display the Start menu.

2. Use the arrow keys to select Shut Down and then press

Enter.

3. After the shutdown is complete, plug the mouse connector

into the back of the computer (or the keyboard) and restart.

Windows 8.1:

1. Press the Windows logo + l to open the Settings charm.

2. Use the arrow keys to select Power, and then press Enter.

3. Use the arrow keys to select Shut Down, and then press

Enter.

4. After the shutdown is complete, plug the mouse connector

into the back of the computer (or the keyboard) and restart.

Windows 10:

1. Press the Ctrl and Esc keys at the same time (or press the

Windows logo key) to display the Start menu.

2. Use the arrow keys to scroll to and select the power icon at

the top right on the menu, and then press Enter.

3. Use the arrow keys to select Shut Down, and then press

Enter.

4. After the shutdown is complete, plug the mouse connector

into the back of the computer (or the keyboard) and restart.

Program in use has stopped responding to commands. Shut down the computer using the keyboard then restart the

computer.

Mouse may need cleaning. Remove the roller ball cover on the mouse and clean the internal

components.

Mouse may need repair. See the Worldwide Limited Warranty for terms and conditions.

Computer is in Sleep state. Press the power button to resume from Sleep state.

CAUTION: When attempting to resume from Sleep state, do not

hold down the power button for more than four seconds.

Otherwise, the computer will shut down and you will lose any

unsaved data.

Mouse will only move vertically, horizontally, or movement is jerky.

Cause Solution

Mouse roller ball or the rotating encoder shafts that make contact

with the ball are dirty.

Remove roller ball cover from the bottom of the mouse and clean

the internal components with a mouse cleaning kit available from

most computer stores.

Solving keyboard and mouse problems 89

Solving Hardware Installation Problems

You may need to recongure the computer when you add or remove hardware, such as an additional drive or

expansion card. If you install a plug and play device, Windows automatically recognizes the device and

congures the computer. If you install a non-plug and play device, you must recongure the computer after

completing installation of the new hardware. In Windows, use the Add Hardware Wizard and follow the

instructions that appear on the screen.

To open the Add Hardware Wizard, open a Command Prompt and open hdwwiz.exe.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system

board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect

the power cord from the wall outlet and allow the internal system components to cool before touching.

Table 6-1 Solving Hardware Installation Problems

A new device is not recognized as part of the system.

Cause Solution

Device is not seated or connected properly. Ensure that the device is properly and securely connected and

that pins in the connector are not bent down.

Cable(s) of new external device are loose or power cables are

unplugged.

Ensure that all cables are properly and securely connected and

that pins in the cable or connector are not bent down.

Power switch of new external device is not turned on. Turn o the computer, turn on the external device, then turn on

the computer to integrate the device with the computer system.

When the system advised you of changes to the conguration,

you did not accept them.

Reboot the computer and follow the instructions for accepting the

changes.

A plug and play board may not automatically congure when

added if the default conguration conicts with other devices.

Use Windows Device Manager to deselect the automatic settings

for the board and choose a basic conguration that does not

cause a resource conict. You can also use Computer Setup to

recongure or disable devices to resolve the resource conict.

To access Device Manager in Windows 7, click Start, select Control

Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start screen,

type c, select Control Panel from the list of applications, and then

select Device Manager.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

USB ports on the computer are disabled in Computer Setup. Run the Computer Setup utility and ensure that Device available

is selected for appropriate USB ports under Advanced > Port

Options.

Computer will not start.

Cause Solution

Wrong memory modules were used in the upgrade or memory

modules were installed in the wrong location.

1. Review the documentation that came with the system to

determine if you are using the correct memory modules and

to verify the proper installation.

90 Chapter 6 Troubleshooting without diagnostics

Computer will not start.

Cause Solution

NOTE: DIMM1 or XMM1 must always be installed. DIMM1

must be installed before DIMM2, and DIMM3 must be

installed before DIMM4.

2. Observe the beeps and LED lights on the front of the

computer. Beeps and ashing LEDs are codes for specic

problems.

3. If you still cannot resolve the issue, contact Customer

Support.

Power LED ashes Red three times and then white two times.

Cause Solution

Memory is installed incorrectly or is bad. CAUTION: To avoid damage to the DIMMs or the system board,

you must unplug the computer power cord before attempting to

reseat, install, or remove a DIMM module.

1. Reseat DIMMs. Power on the system.

2. Replace DIMMs one at a time to isolate the faulty module.

NOTE: DIMM1 or XMM1 must always be installed. DIMM1

must be installed before DIMM2, and DIMM3 must be

installed before DIMM4

3. Replace third-party memory with HP memory.

4. Replace the system board.

Solving Network Problems

Some common causes and solutions for network problems are listed in the following table. These guidelines

do not discuss the process of debugging the network cabling.

Table 6-2 Solving Network Problems

Network driver does not detect network controller.

Cause Solution

Network controller is disabled. 1. Run Computer Setup and enable network controller.

2. Enable the network controller in the operating system using

Device Manager.

To access Device Manager in Windows 7, click Start, select

Control Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start

screen, type c, select Control Panel from the list of

applications, and then select Device Manager.

Solving Network Problems 91

Table 6-2 Solving Network Problems (continued)

Network driver does not detect network controller.

Cause Solution

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

Incorrect network driver. Check the network controller documentation for the correct driver

or obtain the latest driver from the manufacturer’s Web site.

Network status link light never ashes.

NOTE: The network status light is supposed to ash when there is network activity.

Cause Solution

No active network is detected. Check cabling and network equipment for proper connection.

Network controller is not set up properly. Check for the device status within Windows, such as Device

Manager for driver load and the Network Connections applet

within Windows for link status.

To access Device Manager in Windows 7, click Start, select Control

Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start screen,

type c, select Control Panel from the list of applications, and then

select Device Manager.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

Network controller is disabled. 1. Run Computer Setup and enable network controller.

2. Enable the network controller in the operating system using

Device Manager.

To access Device Manager in Windows 7, click Start, select

Control Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start

screen, type c, select Control Panel from the list of

applications, and then select Device Manager.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

Network driver is not properly loaded. Reinstall network drivers.

System cannot autosense the network. Disable auto-sensing capabilities and force the system into the

correct operating mode.

92 Chapter 6 Troubleshooting without diagnostics

Diagnostics reports a failure.

Cause Solution

The cable is not securely connected. Ensure that the cable is securely attached to the network

connector and that the other end of the cable is securely attached

to the correct device.

The cable is attached to the incorrect connector. Ensure that the cable is attached to the correct connector.

There is a problem with the cable or a device at the other end of

the cable.

Ensure that the cable and device at the other end are operating

correctly.

The network controller is defective. Contact an authorized service provider.

Diagnostics passes, but the computer does not communicate with the network.

Cause Solution

Network drivers are not loaded, or driver parameters do not

match current conguration.

Make sure the network drivers are loaded and that the driver

parameters match the conguration of the network controller.

Make sure the correct network client and protocol is installed.

The network controller is not congured for this computer. Select the Network and Sharing Center icon in the Control Panel

and congure the network controller.

To access Control Panel in Windows 7, click Start, and then select

Control Panel.

To access Control Panel in Windows 8.1, from the Start screen,

type c, and then select Control Panel.

To access Control Panel in Windows 10, type control panel in

the taskbar search box, and then select Control Panel from the

list of applications.

Network controller stopped working when an expansion board was added to the computer.

Cause Solution

The network controller requires drivers. Verify that the drivers were not accidentally deleted when the

drivers for a new expansion board were installed.

Network controller stops working without apparent cause.

Cause Solution

The les containing the network drivers are corrupted. Reinstall the network drivers using the Recovery Disc Set in

Windows 7 or Windows recovery tools in Windows 8.1.

If necessary, download the softpaq from the web (from a dierent

computer).

The cable is not securely connected. Ensure that the cable is securely attached to the network

connector and that the other end of the cable is securely attached

to the correct device.

The network controller is defective. Contact an authorized service provider.

Solving Network Problems 93

New network card will not boot.

Cause Solution

New network card may be defective or may not meet industry-

standard specications.

Install a working, industry-standard NIC, or change the boot

sequence to boot from another source.

Cannot connect to network server when attempting Remote System Installation.

Cause Solution

The network controller is not congured properly. Verify Network Connectivity, that a DHCP Server is present, and

that the Remote System Installation Server contains the NIC

drivers for your NIC.

System setup utility reports unprogrammed EEPROM.

Cause Solution

Unprogrammed EEPROM. Contact an authorized service provider.

Solving memory problems

If you encounter memory problems, some common causes and solutions are listed in the following table.

CAUTION: Power may still be supplied to the DIMMs when the computer is turned o (depending on the

Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the

computer power cord before attempting to reseat, install, or remove a memory module.

For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory.

Otherwise, the computer will not boot the operating system.

NOTE: The memory count will be aected by congurations with the Management Engine (ME) enabled. The

ME uses 8MB of system memory in single channel mode or 16MB of memory in dual-channel mode to

download, decompress, and execute the ME rmware for Out-of-Band (OOB), third-party data storage, and

other management functions.

System will not boot or does not function properly after installing additional memory modules.

Cause Solution

A memory module is not installed in the DIMM1 or XMM1 socket. Ensure that a memory module is installed in the DIMM1 or XMM1

socket on the system board. This socket must be populated with a

memory module.

Memory module is not the correct type or speed grade for the

system or the new memory module is not seated properly.

Replace module with the correct industry-standard device for the

computer. On some models, ECC and non-ECC memory modules

cannot be mixed.

94 Chapter 6 Troubleshooting without diagnostics

Out of memory error.

Cause Solution

You have run out of memory to run the application. Check the application documentation to determine the memory

requirements.

Memory count during POST is wrong.

Cause Solution

The memory modules may not be installed correctly. Check that the memory modules have been installed correctly and

that proper modules are used.

Integrated graphics may use system memory. No action required.

Insucient memory error during operation.

Cause Solution

Too many Terminate and Stay Resident programs (TSRs) are

installed.

Delete any TSRs that you do not need.

You have run out of memory for the application. Check the memory requirements for the application or add more

memory to the computer.

Power LED ashes Red ve times, once every second, followed by a two second pause, and the computer beeps ve times. (Beeps

stop after fth iteration but LEDs continue ashing.)

Cause Solution

Memory is installed incorrectly or is bad. 1. Reseat DIMMs. Power on the system.

2. Replace DIMMs one at a time to isolate the faulty module.

3. Replace third-party memory with HP memory.

4. Replace the system board.

Solving CD-ROM and DVD problems

If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following table

or to the documentation that came with the optional device.

System will not boot from CD-ROM or DVD drive.

Cause Solution

The device is attached to a SATA port that has been hidden in the

Computer Setup utility.

Run the Computer Setup utility and ensure Device Available is

selected for the device's SATA port in Advanced > Port Options.

Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable

media in Advanced > Boot Options.

Network Boot is enabled in Computer Setup. Run the Computer Setup utility and disable Network Boot in

Advanced > Boot Options.

Solving CD-ROM and DVD problems 95

System will not boot from CD-ROM or DVD drive.

Cause Solution

Non-bootable CD in drive. Try a bootable CD in the drive.

Boot order not correct. Run the Computer Setup utility and change boot sequence in

Advanced > Boot Options.

Drive not found (identied).

Cause Solution

Cable could be loose. Check cable connections.

The system may not have automatically recognized a newly

installed device.

See reconguration directions in the Solving Hardware

Installation Problems on page 90 section. If the system still does

not recognize the new device, check to see if the device is listed

within Computer Setup. If it is listed, the probable cause is a driver

problem. If it is not listed, the probable cause is a hardware

problem.

If this is a newly installed drive, run the Computer Setup utility

and try adding a POST delay under Advanced > Power-On

Options.

The device is attached to a SATA port that has been hidden in

Computer Setup.

Run the Computer Setup utility and ensure Device Available is

selected for the device's SATA port in Advanced > Port Options.

Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >

Power-On Options.

CD-ROM or DVD devices are not detected or driver is not loaded.

Cause Solution

Drive is not connected properly or not properly congured. See the documentation that came with the optional device.

Movie will not play in the DVD drive.

Cause Solution

Movie may be regionalized for a dierent country. See the documentation that came with the DVD drive.

Decoder software is not installed. Install decoder software.

Damaged media. Replace media.

Movie rating locked out by parental lock. Use DVD software to remove parental lock.

Media installed upside down. Reinstall media.

96 Chapter 6 Troubleshooting without diagnostics

Cannot eject compact disc (tray-load unit).

Cause Solution

Disc not properly seated in the drive. Turn o the computer and insert a thin metal rod into the

emergency eject hole and push rmly. Slowly pull the tray out

from the drive until the tray is fully extended, then remove

the disc.

CD-ROM, CD-RW, DVD-ROM, or DVD-R/RW drive cannot read a disc or takes too long to start.

Cause Solution

Media is corrupt. Try dierent media to conrm whether media is valid.

Media has been inserted upside down. Re-insert the media with the label facing up.

The DVD-ROM drive takes longer to start because it has to

determine the type of media played, such as audio or video.

Wait at least 30 seconds to let the DVD-ROM drive determine the

type of media being played. If the disc still does not start, read the

other solutions listed for this topic.

CD or DVD disc is dirty. Clean CD or DVD with a CD cleaning kit, available from most

computer stores.

Windows does not detect the CD-ROM or DVD-ROM drive. 1. Use Device Manager to remove or uninstall the device.

To access Device Manager in Windows 7, click Start, select

Control Panel, and then select Device Manager.

To access Device Manager in Windows 8.1, from the Start

screen, type c, select Control Panel from the list of

applications, and then select Device Manager.

To access Device Manager in Windows 10, type device

manager in the taskbar search box, and then select Device

Manager from the list of applications.

2. Restart the computer and let Windows detect the CD or DVD

driver.

Recording or copying CDs is dicult or impossible.

Cause Solution

Wrong or poor quality media type. 1. Try using a slower speed when recording.

2. Verify that you are using the correct media for the drive.

3. Try a dierent brand of media. Quality varies widely

between manufacturers.

Solving CD-ROM and DVD problems 97

Solving USB ash drive problems

If you encounter USB ash drive problems, common causes and solutions are listed in the following table.

USB ash drive is not seen as a drive letter in Windows.

Cause Solution

The drive letter after the last physical drive is not available. Change the default drive letter for the ash drive in Windows.

USB ash drive not found (identied).

Cause Solution

The device is attached to a USB port that has been hidden in

Computer Setup.

Run the Computer Setup utility and enable USB ports in Advanced

> Port Options.

The device was not properly seated before power-up. Ensure the device is fully inserted into the USB port before

applying power to the system

System will not boot from USB ash drive.

Cause Solution

Boot order is not correct. Run the Computer Setup utility and change boot sequence in

Advanced > Boot Options.

Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable

media in Advanced > Boot Options. Ensure USB is enabled in

Storage > Boot Order.

The computer boots to DOS after making a bootable ash drive.

Cause Solution

Flash drive is bootable. Install the ash drive only after the operating system boots.

Flash drive is defective. Try a dierent ash drive.

98 Chapter 6 Troubleshooting without diagnostics

Solving front panel component problems

If you encounter problems with devices connected to the front panel, refer to the common causes and

solutions listed in the following table.

A USB device, headphone, or microphone is not recognized by the computer.

Cause Solution

Device is not properly connected. 1. Turn o the computer.

2. Reconnect the device to the front of the computer and

restart the computer.

The device does not have power. If the USB device requires AC power, be sure one end is connected

to the device and one end is connected to a live outlet.

The correct device driver is not installed. 1. Install the correct driver for the device.

2. You might need to reboot the computer.

The cable from the device to the computer does not work. 1. If possible, replace the cable.

2. Restart the computer.

The device is not working. 1. Replace the device.

2. Restart the computer.

USB ports on the computer are disabled in Computer Setup. Run the Computer Setup utility and ensure that the USB ports are

set to Enabled in Security > USB Security.

Solving Internet access problems

If you encounter Internet access problems, consult your Internet Service Provider (ISP) or refer to the common

causes and solutions listed in the following table.

Unable to connect to the Internet.

Cause Solution

Internet Service Provider (ISP) account is not set up properly. Verify Internet settings or contact your ISP for assistance.

Web browser is not set up properly. Verify that the Web browser is installed and set up to work with

your ISP.

Cable/DSL modem is not plugged in. Plug in cable/DSL modem. You should see a “power” LED light on

the front of the cable/DSL modem.

Cable/DSL service is not available or has been interrupted due to

bad weather.

Try connecting to the Internet at a later time or contact your ISP.

(If the cable/DSL service is connected, the “cable” LED light on the

front of the cable/DSL modem will be on.)

The CAT5 UTP cable is disconnected. Connect the CAT5 UTP cable between the cable modem and the

computers’s RJ-45 connector. (If the connection is good, the “PC”

LED light on the front of the cable/DSL modem will be on.)

IP address is not congured properly. Contact your ISP for the correct IP address.

Cookies are corrupted. (A “cookie” is a small piece of information

that a Web server can store temporarily with the Web browser.

This is useful for having the browser remember some specic

information that the Web server can later retrieve.)

Windows 7:

1. Select Start > Control Panel.

2. Click Internet Options.

Solving front panel component problems 99

Unable to connect to the Internet.

Cause Solution

3. In the Browsing history section on the General tab, click the

Delete button.

4. Select the Cookies check box and click the Delete button.

Windows 8.1:

1. From the Start screen, type c, and then select Control Panel

from the list of applications.

2. Click Internet Options.

3. In the Browsing history section on the General tab, click the

Delete button.

4. Select the Cookies check box and click the Delete button.

Windows 10:

1. Type control panel in the taskbar search box, and then

select Control Panel from the list of applications.

2. Click Internet Options.

3. In the Browsing history section, click the Delete button.

4. Select the Cookies and website data check box and click the

Delete button.

Cannot automatically launch Internet programs.

Cause Solution

You must log on to your ISP before some programs will start. Log on to your ISP and launch the desired program.

100 Chapter 6 Troubleshooting without diagnostics

Solving software problems

Most software problems occur as a result of the following:

●The application was not installed or congured correctly.

●There is insucient memory available to run the application.

●There is a conict between applications.

●Be sure that all the needed device drivers have been installed.

●If you have installed an operating system other than the factory-installed operating system, check to be

sure it is supported on the system.

If you encounter software problems, see the applicable solutions listed in the following table.

Computer will not continue and the HP logo does not display.

Cause Solution

ROM issue - POST error has occurred. Observe the beeps and LED lights on the front of the computer.

See POST error messages and diagnostic front panel LEDs and

audible codes on page 102 to determine possible causes.

See the Worldwide Limited Warranty for terms and conditions.

“Illegal Operation has Occurred” error message is displayed.

Cause Solution

Software being used is not Microsoft-certied for your version of

Windows.

Verify that the software is certied by Microsoft for your version

of Windows (see program packaging for this information).

Conguration les are corrupt. If possible, save all data, close all programs, and restart the

computer.

Solving software problems 101

7 POST error messages and diagnostic front

panel LEDs and audible codes

This appendix lists the error codes, error messages, and the various indicator light and audible sequences

that you may encounter during Power-On Self-Test (POST) or computer restart, the probable source of the

problem, and steps you can take to resolve the error condition.

POST Message Disabled suppresses most system messages during POST, such as memory count and non-

error text messages. If a POST error occurs, the screen will display the error message. To manually switch to

the POST Messages Enabled mode during POST, press any key (except F10, F11, or F12). The default mode is

POST Message Disabled.

The speed at which the computer loads the operating system and the extent to which it is tested are

determined by the POST mode selection.

Quick Boot is a fast startup process that does not run all of the system level tests, such as the memory test.

Full Boot runs all of the ROM-based system tests and takes longer to complete.

Full Boot may also be enabled to run every 1 to 30 days on a regularly scheduled basis. To establish the

schedule, recongure the computer to the Full Boot Every x Days mode, using Computer Setup.

NOTE: For more information on Computer Setup, see Computer Setup (F10) Utility on page 58.

POST numeric codes and text messages

This section covers those POST errors that have numeric codes associated with them. The section also

includes some text messages that may be encountered during POST.

NOTE: The computer will beep once after a POST text message is displayed on the screen.

Control panel message Description Recommended action

002-Option ROM Checksum Error System ROM or expansion board option ROM

checksum.

1. Verify the correct ROM.

2. Flash the ROM if needed.

3. If an expansion board was recently added,

remove it to see if the problem remains.

4. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

5. If the message disappears, there may be a

problem with the expansion card.

6. Replace the system board.

003-System Board Failure DMA or timers. 1. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

2. Remove expansion boards.

3. Replace the system board.

005-Real-Time Clock Power Loss Invalid time or date in conguration memory. Reset the date and time under Control Panel

(Computer Setup can also be used). If the

102 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes

Control panel message Description Recommended action

RTC (real-time clock) battery may need to

be replaced.

problem persists, replace the RTC battery. See

the Removal and Replacement section for

instructions on installing a new battery.

008–Microcode Patch Error Processor is not supported by the BIOS. 1. Upgrade BIOS to proper version.

2. Change the processor.

009–PMM Allocation Error during MEBx

Download

Memory error during POST execution of the

Management Engine (ME) BIOS Extensions

option ROM.

1. Reboot the computer.

2. Unplug the power cord, re-seat the

memory modules, and reboot the

computer.

3. If the memory conguration was recently

changed, unplug the computer, restore

the original memory conguration, and

reboot the computer.

4. If the error persists, replace the system

board.

00A-Product Information Not Valid The product information programmed into the

system board is missing or invalid.

Use Computer Setup to update this information.

00B-MEBx Module did not checksum correctly Memory error during POST execution of the

Management Engine (ME) BIOS Extensions

option ROM.

1. Reboot the computer.

2. Unplug the power cord, re-seat the

memory modules, and reboot the

computer.

3. If the memory conguration was recently

changed, unplug the power cord, restore

the original memory conguration, and

reboot the computer.

4. If the error persists, replace the system

board.

00C-PMM Deallocation Error during MEBx

Cleanup

Memory error during POST execution of the

Management Engine (ME) BIOS Extensions

option ROM.

1. Reboot the computer.

2. Unplug the power cord, re-seat the

memory modules, and reboot the

computer.

3. If the memory conguration was recently

changed, unplug the power cord, restore

the original memory conguration, and

reboot the computer.

4. If the error persists, replace the system

board.

00D-Setup Error during MEBx Execution MEBx selection or exit resulted in a setup

failure.

1. Reboot the computer.

2. Unplug the power cord, re-seat the

memory modules, and reboot the

computer.

3. If the memory conguration was recently

changed, unplug the power cord, restore

the original memory conguration, and

reboot the computer.

4. If the error persists, replace the system

board.

POST numeric codes and text messages 103

Control panel message Description Recommended action

00E-Inventory Error during MEBx Execution BIOS information passed to the MEBx resulted

in a failure.

1. Reboot the computer.

2. If the error persists, update to the latest

BIOS version.

3. If the error still persists, replace the

system board.

00F-Interface Error during MEBx Execution MEBx operation experienced a hardware error

during communication with the ME.

1. Reboot the computer.

2. If the error persists, update to the latest

BIOS version.

3. If the error still persists, replace the

system board.

100-Front Audio Not Connected Front audio cable has been detached or

unseated from system board.

Reconnect or replace front audio cable.

2E1-MemorySize Error Memory amount has changed since the last

boot (memory added or removed).

The system memory size is dierent from the

last startup. The most common reason is the

removal of memory from the system board.

Press the F1 key to save the memory changes.

If this message persists, verify that the

memory modules are installed correctly.

2E2-Memory Error Memory module conguration failed during

boot up.

1. Ensure memory modules are correctly

installed.

2. Verify proper memory module type.

3. Remove and replace the identied faulty

memory module(s).

4. If the error persists after replacing

memory modules, replace the system

board.

2E3-Incompatible Memory Module in Memory

Socket(s) X, X, ...

A memory module in memory socket identied

in the error message is missing critical SPD

information, or is incompatible with the chipset.

1. Verify proper memory module type.

2. Try another memory socket.

3. Replace with a supported module.

2E4-DIMM Conguration Warning The current memory conguration is not

optimized.

Rearrange the DIMMs so that each channel has

the same amount of memory.

2E5-ECC Memory Module Detected on

Unsupported Platform

Recently added memory module(s) support ECC

memory error correction.

1. If additional memory was recently added,

remove it to see if the problem remains.

2. Check product documentation for

memory support information.

2E6–Memory Not Congured Correctly for

Proper MEBx Execution

DIMM1 is not installed. Make sure there is a memory module in the

DIMM1 socket and that it is properly seated.

300–Conguration Change Warning The storage device conguration will be

updated as shown.

Not applicable

301-Hard Disk 1: SMART Hard Drive Detects

Imminent Failure

Hard drive is about to fail. (Some hard drives

have a hard drive rmware patch that will x an

erroneous error message.)

1. Determine if hard drive is giving correct

error message. Run the Drive Protection

System test under using F2 Diagnostics

when booting the computer.

2. Apply hard drive rmware patch

if applicable. (Available at

http://www.hp.com/support.)

104 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes

Control panel message Description Recommended action

3. Back up contents and replace hard drive.

302-Hard Disk 2: SMART Hard Drive Detects

Imminent Failure

Hard drive is about to fail. (Some hard drives

have a hard drive rmware patch that will x an

erroneous error message.)

1. Determine if hard drive is giving correct

error message. Run the Drive Protection

System test under using F2 Diagnostics

when booting the computer.

2. Apply hard drive rmware patch

if applicable. (Available at

http://www.hp.com/support.)

3. Back up contents and replace hard drive.

309 – 30C: Hard Disk 3–6: SMART Hard Drive

Detects Imminent Failure

Hard drive is about to fail. (Some hard drives

have a hard drive rmware patch that will x an

erroneous error message.)

1. Determine if hard drive is giving correct

error message. Run the Drive Protection

System test under using F2 Diagnostics

when booting the computer.

2. Apply hard drive rmware patch

if applicable. (Available at

http://www.hp.com/support.)

3. Back up contents and replace hard drive.

3F0–Boot Device Not Found Boot device not found. Insert boot device or load operating system.

3F1–Hard Disk 1 Error Hard disk 1 error. 1. Check and/or replace cables.

2. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

3. Replace the hard disk drive.

3F2–Hard Disk 2 Error Hard disk 2 error. 1. Check and/or replace cables.

2. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

3. Replace the hard disk drive.

400-Serial Port A Address Conict Detected Both external and internal serial ports are

assigned to the same resources.

1. Remove any serial port expansion cards.

2. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

3. Recongure card resources and/or run

Computer Setup or Windows utilities.

401-Serial Port B Address Conict Detected Both external and internal serial ports are

assigned to the same resources.

1. Remove any serial port expansion cards.

2. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

3. Recongure card resources and/or run

Computer Setup or Windows utilities.

402-Serial Port C Address Conict Detected Both external and internal serial ports are

assigned to the same resources.

1. Remove any serial port expansion cards.

2. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

3. Recongure card resources and/or run

Computer Setup or Windows utilities.

403-Serial Port D Address Conict Detected Both external and internal serial ports are

assigned to the same resources.

1. Remove any serial port expansion cards.

2. Clear CMOS. (See Password security and

resetting CMOS on page 109.)

POST numeric codes and text messages 105

Control panel message Description Recommended action

3. Recongure card resources and/or run

Computer Setup or Windows utilities.

419-Out of Memory Space for Option ROMs Recently added PCI expansion card contains an

option ROM too large to download during POST.

▲If a PCI expansion card was recently

added, remove it to see if the problem

remains.

41A-Front USB1/USB2 Not Connected Front USB cable has been detached or unseated

from system board.

Reconnect or replace front USB cable.

41B-Device in PCI Express Slot Failed To

Initialize

There is an incompatibility or problem with a

PCIe device and the system or PCIe link could

not be congured to a valid bus width or speed.

Try rebooting the system. If the error reoccurs,

the device may not work with this system

43A-USB Type-C I2C Not Connected Cable is required between I2C on card and USB-

C on the system board.

Install cable between I2C on card and USB-C on

the system board.

43B-More Than One USB type-C Cards Are

Installed

More than one USB type-C card is installed. Remove USB type-C card so only one is

installed.

500–BIOS Recovery A system BIOS recovery has occurred. Not applicable.

70x-Wireless Mode Not Supported The system has detected a wireless module

installed in the system that is not supported

and has been disabled.

Replace with a supported module.

800-Keyboard Error Keyboard failure. 1. Reconnect keyboard with computer

turned o.

2. Check connector for bent or missing pins.

3. Ensure that none of the keys are

depressed.

4. Replace keyboard.

801-Keyboard or System Unit Error Keyboard failure. 1. Reconnect the keyboard with computer

turned o.

2. Ensure that none of the keys are

depressed.

3. Replace the keyboard.

4. Replace the system board.

900-CPU Fan Not Detected CPU fan is not connected or may have

malfunctioned.

1. Reseat CPU fan.

2. Reseat fan cable.

3. Replace CPU fan.

901-Chassis, Rear Chassis, or Front Chassis Fan

not Detected

Chassis, rear chassis, or front chassis fan is not

connected or may have malfunctioned.

1. Reseat chassis, rear chassis, or front

chassis fan.

2. Reseat fan cable.

3. Replace chassis, rear chassis, or front

chassis fan.

903-Computer Cover Has Been Removed Since

Last System Startup

N/A

904-SATA Cabling Error One or more SATA devices are improperly

attached. For optimal performance, the SATA 0

and SATA 1 ports should be used for hard drives

before other ports.

Ensure SATA connectors are used in ascending

order. For one device, use SATA 0. For two

devices, use SATA 0 and SATA 1. For three

devices, use SATA 0, SATA 1, and SATA 2.

106 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes

Control panel message Description Recommended action

90B-Fan Failure The system has detected that a cooling fan is

not operating correctly.

1. Reseat fan.

2. Reseat fan cable.

3. Replace fan.

90D-System Temperature Thermal shutdown occurred. The system BIOS

has detected your machine was previously shut

down to avoid overheating. Overheating may

occur if the cooling vents are blocked or the

operating temperature exceeds the system

specications. The machine should return to

normal operation once the situation is resolved.

Make sure system has proper airow.

90E-Power Supply Fan Not detected Power supply fan is not connected or may have

malfunctioned.

1. Reseat power supply fan.

2. Reseat fan cable.

3. Replace power supply fan.

910–Filter Warning Airow lter is dirty. Replace the airow lter.

Interpreting system validation diagnostic front panel LEDs and

audible codes

During the system validation phase that occurs at system startup, the BIOS validates the functionality of the

following subsystems and conditions:

●AC adapter

●System board power

●Processor failure

●BIOS corruption

●Memory failure

●Graphics failure

●System board failure

●BIOS authentication failure

If an error is detected, specic patterns of long and short blinks, accompanied by long and short beeps (where

applicable) are used to identify the error. These patterns will make up a two part code:

●Major – the category of the error

●Minor – the specic error within the category

NOTE: Single beep/blink codes are not used.

Number of long beeps/blinks Error category

1 Not used

2 BIOS

3 Hardware

Interpreting system validation diagnostic front panel LEDs and audible codes 107

4 Thermal

5 System board

Patterns of blink/beep codes are determined by using the following parameters:

●1 second pause occurs after the last major blink.

●2 second pause occurs after the last minor blink.

●Beep error code sequences occur for the rst 5 iterations of the pattern and then stop.

●Blink error code sequences continue until the computer is unplugged or the power button is pressed.

NOTE: Not all diagnostic lights and audible codes are available on all models.

The red LED blinks to represent the major error category (long blinks). The white LED blinks to represent the

minor error category (short blinks). For example, ‘3.5’ indicates 3 long red blinks and 5 short white blinks to

communicate the processor is not detected.

Category Major/minor code Description

BIOS 2.2 The main area (DXE) of BIOS has become corrupted and there is no recovery

binary image available.

2.3 The embedded controller policy requires the user to enter a key sequence.

2.4 The embedded controller is checking or recovering the boot block.

Hardware 3.2 The embedded controller has timed out waiting for BIOS to return from

memory initialization.

3.3 The embedded controller has timed out waiting for BIOS to return from

graphics initialization.

3.4 The system board displays a power failure (crowbar).*

3.5 The processor is not detected.*

3.6 The processor does not support an enabled feature.

Thermal 4.2 A processor over temperature condition has been detected.*

4.3 An ambient temperature over temperature condition has been detected.

4.4 An MXM over temperature condition has been detected.

System board 5.2 The embedded controller cannot nd valid rmware.

5.3 The embedded controller has timed out waiting for the BIOS.

5.4 The embedded controller has timed out waiting for BIOS to return from

system board initialization.

5.5 The embedded controller rebooted the system after a possible lockup

condition had been detected through the use of a System Health Timer,

Automated System Recovery Timer, or other mechanism.

* Indicates hardware triggered event; all other events are controlled by the BIOS.

108 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes

8 Password security and resetting CMOS

This computer supports security password features, which can be established through the Computer Setup

Utilities menu.

This computer supports two security password features that are established through the Computer Setup

Utilities menu: administrator password and power-on password. When you establish only an administrator

password, any user can access all the information on the computer except Computer Setup. When you

establish only a power-on password, the power-on password is required to access Computer Setup and any

other information on the computer. When you establish both passwords, only the administrator password will

give you access to Computer Setup.

When both passwords are set, the administrator password can also be used in place of the power-on

password as an override to log in to the computer. This is a useful feature for a network administrator.

If you forget one or both passwords, you can clear all passwords by powering o the system, opening the

cover, temporarily removing the PSWD jumper, and booting once. This will erase the administrator and

power-on passwords. You must restore the jumper to create new passwords.

CAUTION: Pushing the CMOS button with power removed will reset the BIOS settings to factory defaults. It

may be useful to back up the BIOS settings or save them as custom defaults before resetting them in case

they are needed later. Back up can be performed in Computer Setup or using the BiosCongUtility tool

available from www.hp.com. See Computer Setup (F10) Utility on page 58 for information on backing up the

BIOS settings.

Resetting the password jumper

CAUTION: Stringent security is a mode where there is no physical bypass of the password function. If

enabled, removing the password jumper will be ignored. To enable this mode, change the security setting

Clear Password Jumper in Password Policies to Ignore.

If you lose or forget the password when in stringent security mode, the system can only be reset by System

Management Command. This is a way for HP Service and Support to provide a secure method to access the

BIOS and command a password reset for a specically identied unit under the direction of the owner. This

scenario may not be covered under warranty.

To prevent needing a customer service event to restore access to the system, record your congured

administrator and power-on passwords in a safe place away from your computer.

To disable the power-on or administrator password features, or to clear the power-on or administrator

passwords, complete the following steps:

Resetting the password jumper 109

1. Shut down the operating system properly, then turn o the computer and any external devices, and

disconnect the power cord from the power outlet.

2. With the power cord disconnected, press the power button again to drain the system of any residual

power.

WARNING! To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to

disconnect the power cord from the wall outlet, and allow the internal system components to cool

before touching.

CAUTION: When the computer is plugged in, the power supply always has voltage applied to the

system board even when the unit is turned o. Failure to disconnect the power cord can result in

damage to the system.

Static electricity can damage the electronic components of the computer or optional equipment. Before

beginning these procedures, ensure that you are discharged of static electricity by briey touching a

grounded metal object. See the Safety & Regulatory Information guide for more information.

3. Remove the access panel.

4. Locate the header and jumper.

NOTE: The password jumper is green so that it can be easily identied. For assistance locating the

password jumper and other system board components, see the system board components image at

System board on page 49.

5. Remove the jumper from pins 1 and 2.

6. Place the jumper on either pin 1 or 2, but not both, so that it does not get lost.

7. Replace the access panel and reconnect the external equipment.

8. Plug in the computer and turn on power. Allow the operating system to start. This clears the current

passwords and disables the password features.

9. Shut down the computer, unplug the power, and disconnect the external equipment.

10. Remove the access panel.

11. Place the jumper on pins 1 and 2.

12. Replace the access panel.

13. Reconnect the external equipment and plug in the computer.

110 Chapter 8 Password security and resetting CMOS

Clearing and resetting the BIOS

The CMOS button resets BIOS settings to default, but does not clear the passwords or aect any of the other

Security settings. On Intel systems with advanced manageability features, the CMOS button will also partially

unprovision AMT.

1. Turn o the computer and any external devices, and disconnect the power cord from the power outlet.

2. Disconnect the keyboard, monitor, and any other external equipment connected to the computer.

WARNING! To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to

disconnect the power cord from the wall outlet, and allow the internal system components to cool

before touching.

CAUTION: When the computer is plugged in, the power supply always has voltage applied to the

system board even when the unit is turned o. Failure to disconnect the power cord can result in

damage to the system.

Static electricity can damage the electronic components of the computer or optional equipment. Before

beginning these procedures, ensure that you are discharged of static electricity by briey touching a

grounded metal object. See the Safety & Regulatory Information guide for more information.

3. Remove the access panel.

CAUTION: Pushing the CMOS button will reset CMOS values to factory defaults. It is important to back

up the computer CMOS settings before resetting them in case they are needed later. Back up is easily

done through Computer Setup. See Computer Setup (F10) Utility on page 58 for information on backing

up the CMOS settings.

4. Locate, press, and hold the CMOS button in for ve seconds.

NOTE: Make sure you have disconnected the AC power cord from the wall outlet. The CMOS button will

not clear CMOS if the power cord is connected.

NOTE: For assistance locating the CMOS button and other system board components, see the system

board components image at System board on page 49.

5. Replace the access panel.

6. Reconnect the external devices.

7. Plug in the computer and turn on power.

Clearing and resetting the BIOS 111

NOTE: You will receive POST error messages after clearing CMOS and rebooting advising you that

conguration changes have occurred. Use Computer Setup to reset any special system setups along with

the date and time.

For instructions on Computer Setup, see Computer Setup (F10) Utility on page 58.

112 Chapter 8 Password security and resetting CMOS

9 Using HP PC Hardware Diagnostics (UEFI)

HP PC Hardware Diagnostics is a Unied Extensible Firmware Interface (UEFI) that allows you to run diagnostic

tests to determine whether the computer hardware is functioning properly. The tool runs outside the

operating system so that it can isolate hardware failures from issues that are caused by the operating system

or other software components.

When HP PC Hardware Diagnostics (UEFI) detects a failure that requires hardware replacement, a 24-digit

Failure ID is generated. This ID can then be provided to support to help determine how to correct the problem.

To start HP PC Hardware Diagnostics (UEFI), follow these steps:

1. Turn on or restart the computer, and quickly press esc

2. Press F2.

The BIOS searches three places for the diagnostic tools, in the following order:

a. Connected USB drive

NOTE: To download the HP PC Hardware Diagnostics (UEFI) tool to a USB drive, see Downloading

HP PC Hardware Diagnostics (UEFI) to a USB device on page 113.

b. Hard drive

c. BIOS

3. When the diagnostic tool opens, select the type of diagnostic test you want to run, and then follow the

on-screen instructions.

NOTE: If you need to stop a diagnostic test, press esc.

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device

NOTE: The HP PC Hardware Diagnostics (UEFI) download instructions are provided in English only, and you

must use a Windows computer to download and create the HP UEFI support environment because only .exe

les are oered.

There are two options to download HP PC Hardward Diagnostics to USB device.

Download the latest UEFI version

1. Go to http://www.hp.com/go/techcenter/pcdiags. The HP PC Diagnostics home page is displayed.

2. In the HP PC Hardware Diagnostics section, click the Dowload link, and then select Run.

Download any version of UEFI for a specic product

1. Go to http://www.hp.com/support, and then select your country. The HP Support page is displayed. .

2. Click Drivers & Downloads.

3. Use the categories listed to nd your product.

– or –

Click Find Now to let HP automatically detect your product.

Downloading HP PC Hardware Diagnostics (UEFI) to a USB device 113

4. Select your computer, and then select your operating system.

5. In the Diagnostic section, follow the on-screen instructions to select and download the UEFI version you

want.

114 Chapter 9 Using HP PC Hardware Diagnostics (UEFI)

10 System backup and recovery

Backing up, restoring, and recovering in Windows 10

This section provides information about the following processes. The information in the section is standard

procedure for most products.

●Creating recovery media and backups

●Restoring and recovering your system

For additional information, refer to Help and Support.

▲Type help in the taskbar search box, and then select Help and Support.

Creating recovery media and backups

The following methods of creating recovery media and backups are available on select products only. Choose

the available method according to your computer model.

●Use HP Recovery Manager to create HP Recovery media after you successfully set up the computer. This

step creates a backup of the HP Recovery partition on the computer. The backup can be used to reinstall

the original operating system in cases where the hard drive is corrupted or has been replaced. For

information on creating recovery media, see Creating HP Recovery media (select products only)

on page 115. For information on the recovery options that are available using the recovery media, see

What you need to know before you get started on page 117.

●Use Windows tools to create system restore points and create backups of personal information.

For more information, see Using Windows tools on page 117.

NOTE: If storage is 32 GB or less, Microsoft System Restore is disabled by default.

Creating HP Recovery media (select products only)

If possible, check for the presence of the Recovery partition and the Windows partition. From the Start menu,

select File Explorer.

●If your computer does not list the Windows partition and the Recovery partition, you can obtain recovery

media for your system from support. See the Worldwide Telephone Numbers booklet included with the

computer. You can also nd contact information on the HP website. Go to http://www.hp.com/support,

select your country or region, and follow the on-screen instructions.

You can use Windows tools to create system restore points and create backups of personal information,

see Using Windows tools on page 117.

●If your computer does list the Recovery partition and the Windows partition, you can use HP Recovery

Manager to create recovery media after you successfully set up the computer. HP Recovery media can be

used to perform system recovery if the hard drive becomes corrupted. System recovery reinstalls the

original operating system and software programs that were installed at the factory and then congures

the settings for the programs. HP Recovery media can also be used to customize the system or restore

the factory image if you replace the hard drive.

Backing up, restoring, and recovering in Windows 10 115

◦Only one set of recovery media can be created. Handle these recovery tools carefully, and keep

them in a safe place.

◦HP Recovery Manager examines the computer and determines the required storage capacity for

the media that will be required.

◦To create recovery discs, your computer must have an optical drive with DVD writer capability, and

you must use only high-quality blank DVD-R, DVD+R, DVD-R DL, or DVD+R DL discs. Do not use

rewritable discs such as CD±RW, DVD±RW, double-layer DVD±RW, or BD-RE (rewritable Blu-ray)

discs; they are not compatible with HP Recovery Manager software. Or, instead, you can use a high-

quality blank USB ash drive.

◦If your computer does not include an integrated optical drive with DVD writer capability, but you

would like to create DVD recovery media, you can use an external optical drive (purchased

separately) to create recovery discs. If you use an external optical drive, it must be connected

directly to a USB port on the computer; the drive cannot be connected to a USB port on an external

device, such as a USB hub. If you cannot create DVD media yourself, you can obtain recovery discs

for your computer from HP. See the Worldwide Telephone Numbers booklet included with the

computer. You can also nd contact information on the HP website. Go to http://www.hp.com/

support, select your country or region, and follow the on-screen instructions.

◦Be sure that the computer is connected to AC power before you begin creating the recovery media.

◦The creation process can take an hour or more. Do not interrupt the creation process.

◦If necessary, you can exit the program before you have nished creating all of the recovery DVDs.

HP Recovery Manager will nish burning the current DVD. The next time you start HP Recovery

Manager, you will be prompted to continue.

To create HP Recovery media:

1. Type recovery in the taskbar search box, and then select HP Recovery Manager.

2. Select Create recovery media, and then follow the on-screen instructions.

If you ever need to recover the system, see Recovering using HP Recovery Manager on page 117.

116 Chapter 10 System backup and recovery

Using Windows tools

You can create recovery media, system restore points, and backups of personal information using Windows

tools.

NOTE: If storage is 32 GB or less, Microsoft System Restore is disabled by default.

For more information and steps, see Help and Support.

▲Type help in the taskbar search box, and then select Help and Support.

Restore and recovery

There are several options for recovering your system. Choose the method that best matches your situation

and level of expertise:

IMPORTANT: Not all methods are available on all products.

●Windows oers several options for restoring from backup, refreshing the computer, and resetting the

computer to its original state. For more information see Help and Support.

▲Type help in the taskbar search box, and then select Help and Support.

●If you need to correct a problem with a preinstalled application or driver, use the Reinstall drivers and/

or applications option (select products only) of HP Recovery Manager to reinstall the individual

application or driver.

▲Type recovery in the taskbar search box, select HP Recovery Manager, select Reinstall drivers

and/or applications, and then follow the on-screen instructions.

●If you want to recover the Windows partition to original factory content, you can choose the System

Recovery option from the HP Recovery partition (select products only) or use the HP Recovery media.

For more information, see Recovering using HP Recovery Manager on page 117. If you have not already

created recovery media, see Creating HP Recovery media (select products only) on page 115.

●On select products, if you want to recover the computer's original factory partition and content, or if you

have replaced the hard drive, you can use the Factory Reset option of HP Recovery media. For more

information, see Recovering using HP Recovery Manager on page 117.

●On select products, if you want to remove the recovery partition to reclaim hard drive space, HP

Recovery Manager oers the Remove Recovery Partition option.

For more information, see Removing the HP Recovery partition (select products only) on page 119.

Recovering using HP Recovery Manager

HP Recovery Manager software allows you to recover the computer to its original factory state by using the

HP Recovery media that you either created or that you obtained from HP, or by using the HP Recovery

partition (select products only). If you have not already created recovery media, see Creating HP Recovery

media (select products only) on page 115.

What you need to know before you get started

●HP Recovery Manager recovers only software that was installed at the factory. For software not provided

with this computer, you must either download the software from the manufacturer's website or reinstall

the software from the media provided by the manufacturer.

Backing up, restoring, and recovering in Windows 10 117

IMPORTANT: Recovery through HP Recovery Manager should be used as a nal attempt to correct

computer issues.

●HP Recovery media must be used if the computer hard drive fails. If you have not already created

recovery media, see Creating HP Recovery media (select products only) on page 115.

●To use the Factory Reset option (select products only), you must use HP Recovery media. If you have not

already created recovery media, see Creating HP Recovery media (select products only) on page 115.

●If your computer does not allow the creation of HP Recovery media or if the HP Recovery media does not

work, you can obtain recovery media for your system from support. See the Worldwide Telephone

Numbers booklet included with the computer. You can also nd contact information from the HP

website. Go to http://www.hp.com/support, select your country or region, and follow the on-screen

instructions.

IMPORTANT: HP Recovery Manager does not automatically provide backups of your personal data. Before

beginning recovery, back up any personal data you want to retain.

Using HP Recovery media, you can choose from one of the following recovery options:

NOTE: Only the options available for your computer display when you start the recovery process.

●System Recovery—Reinstalls the original operating system, and then congures the settings for the

programs that were installed at the factory.

●Factory Reset—Restores the computer to its original factory state by deleting all information from the

hard drive and re-creating the partitions. Then it reinstalls the operating system and the software that

was installed at the factory.

The HP Recovery partition (select products only) allows System Recovery only.

Using the HP Recovery partition (select products only)

The HP Recovery partition allows you to perform a system recovery without the need for recovery discs or a

recovery USB ash drive. This type of recovery can be used only if the hard drive is still working.

To start HP Recovery Manager from the HP Recovery partition:

1. Type recovery in the taskbar search box, select Recovery Manager, and then select HP Recovery

Environment.

- or -

Press f11 while the computer boots, or press and hold f11 as you press the power button.

2. Select Troubleshoot from the boot options menu.

3. Select Recovery Manager, and then follow the on-screen instructions.

Using HP Recovery media to recover

You can use HP Recovery media to recover the original system. This method can be used if your system does

not have an HP Recovery partition or if the hard drive is not working properly.

1. If possible, back up all personal les.

2. Insert the HP Recovery media, and then restart the computer.

NOTE: If the computer does not automatically restart in HP Recovery Manager, change the computer

boot order. See Changing the computer boot order on page 119.

3. Follow the on-screen instructions.

118 Chapter 10 System backup and recovery

Changing the computer boot order

If your computer does not restart in HP Recovery Manager, you can change the computer boot order, which is

the order of devices listed in BIOS where the computer looks for startup information. You can change the

selection to an optical drive or a USB ash drive.

To change the boot order:

1. Insert the HP Recovery media.

2. Access BIOS.

Restart the computer, quickly press esc, and then press f9 for boot options.

3. Select the optical drive or USB ash drive from which you want to boot.

4. Follow the on-screen instructions.

Removing the HP Recovery partition (select products only)

HP Recovery Manager software allows you to remove the HP Recovery partition to free up hard drive space.

IMPORTANT: After you remove the HP Recovery partition, you will not be able to perform System Recovery

or create HP recovery media from the HP Recovery partition. So before you remove the Recovery partition,

create HP Recovery media; see Creating HP Recovery media (select products only) on page 115.

NOTE: The Remove Recovery Partition option is only available on products that support this function.

Follow these steps to remove the HP Recovery partition:

1. Type recovery in the taskbar search box, and then select HP Recovery Manager.

2. Select Remove Recovery Partition, and then follow the on-screen instructions.

Backing up, restoring, and recovering in Windows 8.1 or

Windows 8

Your computer includes tools provided by HP and Windows to help you safeguard your information

and retrieve it if you ever need to. These tools will help you return your computer to a proper working state or

even back to the original factory state, all with simple steps.

This section provides information about the following processes:

●Creating recovery media and backups

●Restoring and recovering your system

NOTE: This section describes an overview of backing up, restoring, and recovering options. For more details

about the tools provided, see Help and Support. From the Start screen, type help, and then select Help and

Support.

Creating recovery media and backups

Recovery after a system failure is only as good as your most recent backup.

Backing up, restoring, and recovering in Windows 8.1 or Windows 8 119

1. After you successfully set up the computer, create recovery media. This step creates a backup of the

recovery partition on the computer. The backup can be used to reinstall the original operating system in

cases where the hard drive is corrupted or has been replaced.

You will use a USB ash drive to create a bootable recovery drive that can be used to troubleshoot a

computer that is unable to start. The USB ash drive can be used to reinstall the original operating

system and the programs that were installed at the factory.

NOTE: Any information on the USB ash drive will be erased before the recovery media is created.

●To create the Windows 8.1 recovery media, from the Start screen, type recovery drive, then

click on Create a recovery drive. Follow the on-screen instructions to continue.

●To create the Windows 8 recovery media, from the Start screen, type recovery drive, and

then click on Settings, then click on Create a recovery drive. Follow the on-screen instructions to

continue.

2. Use the Windows tools to create system restore points and create backups of personal information. For

more information and steps, see Help and Support. From the Start screen, type help, and then select

Help and Support.

Restoring and recovering using Windows tools

Windows oers several options for restoring from backup, refreshing the computer, and resetting the

computer to its original state. For more information and steps, see Help and Support. From the Start screen,

type help, and then select Help and Support.

Using Reset when the system is not responding

NOTE: You may be prompted by User Account Control for your permission or password when you perform

certain tasks. To continue a task, select the appropriate option. For information about User Account Control,

see Help and Support. From the Start screen, type help, and then select Help and Support.

IMPORTANT: Reset does not provide backups of your information. Before using Reset, back up any personal

information you wish to retain.

If Windows recovery steps are not working and the system is not responding, use these steps to start Reset:

1. If possible, back up all personal les.

2. If possible, check for the presence of the HP Recovery partition:

●For Windows 8.1, from the Start screen, type pc, and then select This PC.

●For Windows 8, from the Start screen, type c, and then select Computer.

NOTE: If the HP Recovery partition is not listed, or you cannot check for its presence, you must recover

using the recovery media you created; see Recovery using the Windows recovery USB ash drive

on page 121. Or you must use the Windows operating system media and the Driver Recovery media

(purchased separately); see Recovery using Windows operating system media (purchased separately)

on page 121.

3. If the HP Recovery partition is listed, restart the computer, and then press esc while the HP logo is

displayed. The computer Startup Menu displays.

4. Press f11 to select the System Recovery option.

5. Choose your keyboard layout.

6. Select Troubleshoot.

120 Chapter 10 System backup and recovery

7. Select Reset.

8. Follow the on-screen instructions to continue.

Recovery using the Windows recovery USB ash drive

To recover your system using the recovery USB ash drive you previously created:

NOTE: If you did not create a recovery USB ash drive or the one you created does not work, see Recovery

using Windows operating system media (purchased separately) on page 121.

1. If possible, back up all personal les.

2. Insert the recovery USB ash drive you created into a USB port on your computer.

3. Restart the computer and as soon as you see the HP logo screen, press f9 to display a list of boot

devices. Use the arrow keys to select your USB ash drive from the UEFI Boot Sources list. Press Enter to

boot from that device.

4. Choose your keyboard layout.

5. Select Troubleshoot.

6. Select Refresh your PC.

7. Follow the on-screen instructions.

Recovery using Windows operating system media (purchased separately)

To order a Windows operating system DVD, contact support. Go to http://www.hp.com/support, select your

country or region, and follow the on-screen instructions.

CAUTION: Using Windows operating system media completely erases the hard drive contents and reformats

the hard drive. All les that you have created and any software that you have installed on the computer are

permanently removed. When reformatting is complete, the recovery process helps you restore the operating

system, as well as drivers, software, and utilities.

To initiate recovery using Windows operating system media:

NOTE: This process takes several minutes.

1. If possible, back up all personal les.

2. Restart the computer, and then follow the instructions provided with the Windows operating system

media to install the operating system.

3. When prompted, press any keyboard key.

4. Follow the on-screen instructions.

After the repair is completed and the Windows desktop appears:

1. Remove the Windows operating system media, and then insert the Driver Recovery media.

2. Install the Hardware Enabling Drivers rst, and then install Recommended Applications.

Backing up, restoring, and recovering in Windows 7

Your computer includes tools provided by HP and Windows to help you safeguard your information

and retrieve it if you ever need to. These tools will help you return your computer to a proper working state or

even back to the original factory state, all with simple steps.

Backing up, restoring, and recovering in Windows 7 121

This section provides information about the following processes:

●Creating recovery media and backups

●Restoring and recovering your system

NOTE: This section describes an overview of backing up, restoring, and recovering options. For more details

about the Windows Backup and Restore tools provided, see Help and Support. To access Help and Support,

select Start > Help and Support.

Recovery after a system failure is only as good as your most recent backup.

1. After you successfully set up the computer, create recovery media. This media can be used to reinstall

the original operating system in cases where the hard drive is corrupted or has been replaced. See

Creating recovery media on page 122.

2. As you add hardware and software programs, create system restore points. A system restore point is a

snapshot of certain hard drive contents saved by Windows System Restore at a specic time. A system

restore point contains information that Windows uses, such as registry settings. Windows creates a

system restore point for you automatically during a Windows update and during other system

maintenance (such as a software update, security scanning, or system diagnostics). You can also

manually create a system restore point at any time. For more information and steps for creating specic

system restore points, see Help and Support. To access Help and Support, select Start > Help and

Support.

3. As you add photos, video, music, and other personal les, create a backup of your personal information.

If les are accidentally deleted from the hard drive and they can no longer be restored from the Recycle

Bin, or if les become corrupted, you can restore the les that you backed up. In case of system failure,

you can use the backup les to restore the contents of your computer. See Backing up your information

on page 124.

NOTE: HP recommends that you print the recovery procedures and save them for later use, in case of

system instability.

Creating recovery media

After you successfully set up the computer, create recovery media. The media can be used to reinstall the

original operating system in cases where the hard drive is corrupted or has been replaced.

There are two types of recovery media. To determine which steps to follow for your computer:

1. Click the Start button.

2. Click All Programs.

●If Security and Protection is listed, continue with the steps in Creating recovery media using HP

Recovery Manager (select models only) on page 122.

●If Productivity and Tools is listed, continue with the steps in Creating recovery discs with HP

Recovery Disc Creator (select models only) on page 123.

Creating recovery media using HP Recovery Manager (select models only)

●To create recovery discs, your computer must have a DVD writer. Use DVD+R or DVD-R discs (purchased

separately). The discs you use will depend on the type of optical drive you are using.

NOTE: DVD+R DL, DVD-R DL, or DVD±RW disc are not supported.

●You have the option of creating a recovery USB ash drive instead, using a high-quality USB drive.

122 Chapter 10 System backup and recovery

●If you are creating recovery discs, be sure to use high-quality discs. It is normal for the system to reject

defective discs. You will be prompted to insert a new blank disc to try again.

●The number of discs in the recovery-disc set depends on your computer model (typically 3 to 6 DVDs).

The Recovery Media Creation program tells you the specic number of blank discs needed to make the

set. If you are using a USB ash drive, the program will tell you the size of the drive required to store all

the data (minimum of 8 GB).

NOTE: The process of creating recovery media is lengthy. You can quit the process at any time. The

next time you initiate the process, it resumes where it left o.

NOTE: Do not use media cards for creating recovery media. The system may not be able to boot up from a

media card and you may not be able to run system recovery.

To create recovery discs:

1. Close all open programs.

2. Click the Start button, click All Programs, click Security and Protection, click Recovery Manager, and

then click HP Recovery Media Creation. If prompted, click Yes to allow the program to continue.

3. Click Create recovery media using blank DVD(s), and then click Next.

4. Follow the on-screen instructions. Label each disc after you make it (for example, Recovery 1, Recovery

2), and then store the discs in a secure place.

To create a recovery USB ash drive:

NOTE: You must use a USB ash drive with a capacity of at least 8 GB.

NOTE: Recovery Media Creation formats the USB ash drive, deleting any les on it.

1. Close all open programs.

2. Insert the USB ash drive into a USB port on the computer.

3. Click the Start button, click All Programs, click Security and Protection, click Recovery Manager, and

then click Recovery Media Creation.

4. Click Create recovery media with a USB ash drive, and then click Next.

5. Select the USB ash drive from the list of media. The program will let you know how much storage is

required to create the recovery drive. If the USB ash drive does not have enough storage capacity, it will

appear grayed out, and you must replace it with a larger USB ash drive. Click Next.

6. Follow the on-screen instructions. When the process is complete, label the USB ash drive and store it in

a secure place.

Creating recovery discs with HP Recovery Disc Creator (select models only)

HP Recovery Disc Creator is a software program that oers an alternative way to create recovery discs on

select models. After you successfully set up the computer, you can create recovery discs using HP Recovery

Disc Creator. The recovery discs allow you to reinstall your original operating system as well as select drivers

and applications if the hard drive becomes corrupted. HP Recovery Disc Creator creates two kinds of recovery

discs:

●Windows 7 operating system DVD—Installs the operating system without additional drivers or

applications.

●Driver Recovery DVD—Installs specic drivers and applications only, in the same way that the HP

Software Setup utility installs drivers and applications.

Backing up, restoring, and recovering in Windows 7 123

To create recovery discs, your computer must have a DVD writer. Use any of the following types of discs

(purchased separately): DVD+R, DVD+R DL, DVD-R, DVD-R DL, or DVD±RW. The discs you use will depend on

the type of optical drive you are using.

Creating recovery discs

NOTE: The Windows 7 operating system DVD can be created only once. The option to create that media will

not be available after you create a Windows DVD.

To create the Windows DVD:

1. Select Start > All Programs > Productivity and Tools > HP Recovery Disc Creator.

2. Select Windows disk.

3. From the drop-down menu, select the drive for burning the recovery media.

4. Click the Create button to start the burning process. Label the disc after you create it, and store it in a

secure place.

After the Windows 7 operating system DVD has been created, create the Driver Recovery DVD:

1. Select Start > All Programs > Productivity and Tools > HP Recovery Disc Creator.

2. Select Driver disk.

3. From the drop-down menu, select the drive for burning the recovery media.

4. Click the Create button to start the burning process. Label the disc after you create it, and store it in a

secure place.

Backing up your information

You should create your initial backup immediately after initial system setup. As you add new software and

data les, you should continue to back up your system on a regular basis to maintain a reasonably current

backup. Your initial and subsequent backups allow you to restore your data and settings if a failure occurs.

You can back up your information to an optional external hard drive, a network drive, or discs.

Note the following when backing up:

●Store personal les in the Documents library, and back it up regularly.

●Back up templates that are stored in their associated directories.

●Save customized settings that appear in a window, toolbar, or menu bar by taking a screen shot of your

settings. The screen shot can be a time-saver if you have to reset your preferences.

●When backing up to discs, number each disc after removing it from the drive.

NOTE: For detailed instructions on various backup and restore options, perform a search for these topics in

Help and Support. To access Help and Support, select Start > Help and Support.

NOTE: You may be prompted by User Account Control for your permission or password when you perform

certain tasks. To continue a task, select the appropriate option. For information about User Account Control,

see Help and Support: Select Start > Help and Support.

To create a backup using Windows Backup and Restore:

NOTE: The backup process may take over an hour, depending on le size and the speed of the computer.

124 Chapter 10 System backup and recovery

1. Select Start > All Programs > Maintenance > Backup and Restore.

2. Follow the on-screen instructions to set up your backup.

System Restore

If you have a problem that might be due to software that you installed on your computer, or if you want to

restore the system to a previous state without losing any personal information, use System Restore to return

the computer to a previous restore point.

NOTE: Always use this System Restore procedure before you use the System Recovery feature.

To start System Restore:

1. Close all open programs.

2. Click the Start button, right-click Computer, and then click Properties.

3. Click System protection, System Restore, click Next, and then follow the on-screen instructions.

System Recovery

WARNING! This procedure will delete all user information. To prevent loss of information, be sure to back up

all user information so you can restore it after recovery.

System Recovery completely erases and reformats the hard disk drive, deleting all data les that you have

created, and then reinstalls the operating system, programs, and drivers. However, you must reinstall any

software that was not installed on the computer at the factory. This includes software that came on media

included in the computer accessory box, and any software programs you installed after purchase. Any

personal les must be restored from backups you made.

If you were not able to create system recovery DVDs or USB ash drive, you can order a recovery disc set from

support. Go to http://www.hp.com/support, select your country or region, and follow the on-screen

instructions.

NOTE: Always use the System Restore procedure before you use the System Recovery program. See System

Restore on page 125.

You must choose one of the following methods to perform a System Recovery:

●Recovery image — Run System Recovery from a recovery image stored on your hard disk drive. The

recovery image is a le that contains a copy of the original factory-shipped software. To perform a

System Recovery from a recovery image, see System Recovery when Windows is responding

on page 125 or System Recovery when Windows is not responding on page 126.

●Recovery media — Run System Recovery from recovery media that you have created from les stored

on your hard disk drive or purchased separately. See System Recovery using recovery media (select

models only) on page 126.

System Recovery when Windows is responding

CAUTION: System Recovery deletes all data and programs you created or installed. Before you begin, back

up any important data to a CD or DVD or to a USB ash drive.

NOTE: In some cases, you must use recovery media for this procedure. If you have not already created this

media, follow the instructions in Creating recovery media on page 122.

If the computer is working and Windows 7 is responding, use these steps to perform a System Recovery:

Backing up, restoring, and recovering in Windows 7 125

1. Turn o the computer.

2. Disconnect all peripheral devices from the computer except the monitor, keyboard, and mouse.

3. Turn on the computer.

4. When Windows has loaded, click the Start button, and then click All Programs.

●If Security and Protection is listed, continue with step 5.

●If Productivity and Tools is listed, follow the steps in System Recovery when Windows is not

responding on page 126.

5. Click Security and Protection, click Recovery Manager, and then click Recovery Manager. If prompted,

click Yes to allow the program to continue.

6. Under I need help immediately, click System Recovery.

7. Select Yes, and then click Next. Your computer restarts.

8. When the computer restarts, you will see the Recovery Manager welcome screen again. Under I need

help immediately, click System Recovery. If you are prompted to back up your les, and you have not

done so, select Back up your les rst (recommended), and then click Next. Otherwise, select Recover

without backing up your les, and then click Next.

9. System Recovery begins. After System Recovery is complete, click Finish to restart the computer.

10. When Windows has loaded, shut down the computer, reconnect all peripheral devices, and then turn the

computer back on.

System Recovery when Windows is not responding

CAUTION: System Recovery deletes all data and programs you created or installed.

If Windows is not responding, but the computer is working, follow these steps to perform a System Recovery.

1. Turn o the computer. If necessary, press and hold the power button until the computer turns o.

2. Disconnect all peripheral devices from the computer, except the monitor, keyboard, and mouse.

3. Press the power button to turn on the computer.

4. As soon as you see the HP logo screen, repeatedly press the F11 key on your keyboard until the Windows

is Loading Files… message appears on the screen.

5. At the HP Recovery Manager screen, follow the on-screen instructions to continue.

6. When Windows has loaded, shut down the computer, reconnect all peripheral devices, and then turn the

computer back on.

System Recovery using recovery media (select models only)

Use the steps provided in this section if you created recovery media using Creating recovery media using HP

Recovery Manager (select models only) on page 122. If you used HP Recovery Disc Creator to create a

Windows 7 operating system DVD and a Driver Recovery DVD, use the steps in Using HP Recovery Disc

operating system discs (select models only) on page 127.

CAUTION: System Recovery deletes all data and programs you have created or installed. Back up any

important data to a CD or DVD or to a USB ash drive.

To perform a System Recovery using recovery media:

126 Chapter 10 System backup and recovery

1. If you are using a set of DVDs, insert the rst recovery disc into the DVD drive tray, and close the tray. If

you are using a recovery USB ash drive, insert it into a USB port.

2. Click the Start button, and then click Shut Down.

If the computer is not responding, press and hold the power button for approximately 5 seconds or until

the computer turns o.

3. Disconnect all peripheral devices from the computer except the monitor, keyboard, and mouse.

4. Press the power button to turn on the computer, and press Esc as the computer is powering on to

display the startup menu.

5. Use the arrow keys to select the boot menu, and press Enter. Use the arrow keys to select the location

where the recovery media is inserted (USB or DVD). Press Enter to boot from that device.

6. If Recovery Manager asks if you want to run System Recovery from Media or Hard Drive, select Media. On

the Welcome screen, under I need help immediately, click Factory Reset.

7. If you are prompted to back up your les, and you have not done so, select Back up your les rst

(recommended), and then click Next. Otherwise, select Recover without backing up your les, and

then click Next.

8. If you are prompted to insert the next recovery disc, do so.

9. When Recovery Manager is nished, remove the recovery disc or the recovery USB ash drive from the

system.

10. Click Finish to restart the computer.

Using HP Recovery Disc operating system discs (select models only)

Use the steps provided in this section if you used HP Recovery Disc Creator to create a Windows 7 operating

system DVD and a Driver Recovery DVD. If you created recovery media using Creating recovery media using HP

Recovery Manager (select models only) on page 122. use the steps in System Recovery using recovery media

(select models only) on page 126.

If you cannot use the recovery discs you previously created using the HP Recovery Disc Creator (select models

only), you must purchase a Windows 7 operating system DVD to reboot the computer and repair the operating

system.

To order a Windows 7 operating system DVD, contact support. Go to http://www.hp.com/support, select your

country or region, and follow the on-screen instructions.

CAUTION: Using a Windows 7 operating system DVD completely erases the hard drive contents and

reformats the hard drive. All les that you have created and any software that you have installed on the

computer are permanently removed. When reformatting is complete, the recovery process helps you restore

the operating system, as well as drivers, software, and utilities.

To initiate recovery using a Windows 7 operating system DVD:

NOTE: This process takes several minutes.

Backing up, restoring, and recovering in Windows 7 127

1. If possible, back up all personal les.

2. Restart the computer, and then insert the Windows 7 operating system DVD into the optical drive before

the Windows operating system loads.

NOTE: If the computer does not boot to the DVD, restart the computer and press Esc as the computer

is powering on to see the startup menu. Use the arrow keys to select the boot menu and press Enter. Use

the arrow keys to select the location where the recovery DVD is inserted. Press Enter to boot from that

device.

3. When prompted, press any keyboard key.

4. Follow the on-screen instructions.

5. Click Next.

6. Select Install now.

7. Follow the on-screen instructions.

After the repair is completed:

1. Eject the Windows 7 operating system DVD and then insert the Driver Recovery DVD.

2. Follow the on-screen instructions to install the Hardware Enabling Drivers rst, and then install

Recommended Applications.

128 Chapter 10 System backup and recovery

A Power Cord Set Requirements

The power supplies on some computers have external power switches. The voltage select switch feature on

the computer permits it to operate from any line voltage between 100-120 or 220-240 volts AC. Power

supplies on those computers that do not have external power switches are equipped with internal switches

that sense the incoming voltage and automatically switch to the proper voltage.

The power cord set received with the computer meets the requirements for use in the country where you

purchased the equipment.

Power cord sets for use in other countries must meet the requirements of the country where you use the

computer.

General Requirements

The requirements listed below are applicable to all countries:

1. The power cord must be approved by an acceptable accredited agency responsible for evaluation in the

country where the power cord set will be installed.

2. The power cord set must have a minimum current capacity of 10A (7A Japan only) and a nominal voltage

rating of 125 or 250 volts AC, as required by each country’s power system.

3. The diameter of the wire must be a minimum of 0.75 mm2 or 18AWG, and the length of the cord must be

between 1.8 m (6 feet) and 3.6 m (12 feet).

The power cord should be routed so that it is not likely to be walked on or pinched by items placed upon it or

against it. Particular attention should be paid to the plug, electrical outlet, and the point where the cord exits

from the product.

WARNING! Do not operate this product with a damaged power cord set. If the power cord set is damaged in

any manner, replace it immediately.

Japanese Power Cord Requirements

For use in Japan, use only the power cord received with this product.

CAUTION: Do not use the power cord received with this product on any other products.

General Requirements 129

Country-Specic Requirements

Additional requirements specic to a country are shown in parentheses and explained below.

Country Accrediting Agency Country Accrediting Agency

Australia (1)

Austria (1)

Belgium (1)

Canada (2)

EANSW

OVE

CEBC

CSA

Italy (1)

Japan (3)

Norway (1)

Sweden (1)

IMQ

METI

NEMKO

SEMKO

Denmark (1)

Finland (1)

France (1)

Germany (1)

DEMKO

SETI

UTE

VDE

Switzerland (1)

United Kingdom (1)

United States (2)

SEV

BSI

1. The exible cord must be Type HO5VV-F, 3-conductor, 0.75mm2 conductor size. Power cord set ttings (appliance coupler and

wall plug) must bear the certication mark of the agency responsible for evaluation in the country where it will be used.

2. The exible cord must be Type SVT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type

with a NEMA 5-15P (15A, 125V) or NEMA 6-15P (15A, 250V) conguration.

3. Appliance coupler, exible cord, and wall plug must bear a “T” mark and registration number in accordance with the Japanese

Dentori Law. Flexible cord must be Type VCT or VCTF, 3-conductor, 0.75 mm2 conductor size. Wall plug must be a two-pole

grounding type with a Japanese Industrial Standard C8303 (7A, 125V) conguration.

130 Appendix A Power Cord Set Requirements

B Statement of Volatility

HP conrms that HP commercial desktop systems contain DDR3 or DDR4 volatile memory (memory amount

depends on the customer conguration). In addition, the motherboard in the condition originally shipped

without subsequent modication or the addition or installation of any applications, features, or functionality,

contains the following nonvolatile memory: Real Time Clock battery backed-up conguration memory (256

Bytes), DIMM Serial Presence Detect (SPD) conguration data (256 Bytes per module, 128 Bytes

programmable), Serial Peripheral Interface (SPI) ROM for System BIOS (EliteOne800 16M Bytes, EliteOne705

8M Bytes, ProOne600 16M Bytes, ProOne600 16M Bytes, HP MP9 16M Bytes) and Serial Peripheral Interface

(SPI) ROM for System FireBird (Sure Start) (EliteOne800 8M Bytes, EliteOne705 8M Bytes)) and Super I/O’s:

masked keyboard ROM (overall 2K Bytes). In addition, these units contain a Trusted Platform Module (TPM)

that contains 16K Bytes of non-volatile memory for user data. The volatile memory will not hold any user

data once power has been removed for 30 seconds or longer.

To restore the Non-Volatile memory:

1. Download the latest BIOS (system ROM) from the HP website.

2. Follow the instructions to ash the BIOS that are found on the website.

3. Turn on the system, and while system is powering on, and after the HP splash screen, press the F10 key

to enter BIOS setup screen.

4. Select Security > Restore Security Settings to Factory Defaults. Select Yes to conrm. The system will

reboot. This action will reset the settings in the Security menu to their defaults, reset the TPM and

embedded Fingerprint reader (if present), and clear the passwords.

NOTE: Although the TPM security keys will be cleared, data in the non-volatile memory indices may

not be. Data stored in these indices should not contain security sensitive information. If an application

locks down and secures the non-volatile indices, these indices cannot be cleared.

5. Re-enter the F10 setup utility.

6. Select Advanced > Secure Boot Conguration.

7. Select Reset Secure Boot Keys to factory defaults.

8. Press the F10, and the select Yes to save changes.

9. Re-enter the F10 setup utility.

10. Select Apply Factory Defaults and Exit, and the select Yes to conrm.

11. Re-enter the F10 Setup Utility and select Save Custom Defaults to erase any custom values previously

saved.

If Absolute Persistence Module is enabled on the computer, see the service provider for instructions to disable

the feature.

131

CSpecications

Dimensions (with stand)

Height

Width

Depth

6.9 in

7.0 in

1.3 in

175 mm

177 mm

34 mm

Approximate Weight 2.9 lb 1.3 kg

Temperature Range

Operating

Nonoperating

50° to 95°F

-22° to 140°F

10° to 35°C

-30° to 60°C

NOTE: Operating temperature is derated 1.0° C per 300 m (1000 ft) to 3000 m (10,000 ft) above sea level; no direct sustained

sunlight. Maximum rate of change is 10° C/Hr. The upper limit may be limited by the type and number of options installed.

Relative Humidity (noncondensing)

Operating

Nonoperating (38.7°C max wet bulb)

10-90%

5-95%

10-90%

5-95%

Maximum Altitude (unpressurized)

Operating

Nonoperating

16,404 ft

50,000 ft

5000 m

15.240 m

Power Supply

Operating Voltage Range

Rated Voltage Range

Rated Line Frequency

Operating Line Frequency

90-264 VAC

100-240 VAC

50-60 Hz

47-63 Hz

Standard eciency 90W, 89% ecient

65W, 89% ecient

DC Output +19.5V

1This system utilizes an active power factor corrected power supply. This allows the system to pass the CE mark requirements for use

in the countries of the European Union. The active power factor corrected power supply also has the added benet of not requiring an

input voltage range select switch.

132 Appendix C Specications

Index

access panel

locked 73

administrator password 109

antenna (external)

removal and replacement 32

audible codes 107

audio problems 85

backup and recovery, Windows 7

121

Backup and Restore, Windows 7

124

backups

creating Windows 7 122, 124

battery

disposal 17

removal and replacement 34

battery replacement 34

beep codes 107

bezel

illustrated 6

BIOS

clearing and resetting 111

booting options

Full Boot 102

Quick Boot 102

cable management 19

cable pinouts, SATA data 18

cautions

AC power 12

cables 17

electrostatic discharge 12

keyboard cleaning 15

keyboard keys 16

CD-ROM or DVD problems 95

cleaning

computer 15

mouse 16

safety precautions 15

CMOS

backing up 109

computer

specications 132

computer cleaning 15

Computer Setup

access problem 72

country power cord set

requirements 130

Customer Support 70

disassembly preparation 20

DisplayPort option board

illustrated 9

drive cage

removal and replacement 27

Driver Recovery DVD,

creating 123

using for restore 127

Driver Recovery media, Windows

121

Driver Recovery media, Windows

8.1 121

electrostatic discharge (ESD) 12

preventing damage 13

error

codes 102, 107

messages 102

expansion connector board

removal and replacement 48

external antenna

removal and replacement 32

F10 Setup

access problem 72

f11 recovery, Windows 8 120

f11 recovery, Windows 8.1 120

fan

illustrated 9

removal and replacement 26, 37

ash drive problems 98

ashing LEDs 107

front bezel

removal and replacement 22

front panel components

EliteDesk 705 2

EliteDesk 800 1

MP9 1

ProDesk 600 1

front panel problems 99

general problems 72

grounding methods 13

hard drive

installation 23

proper handling 17

removal 23

removal and replacement 23, 28

SATA characteristics 17

hard drive problems 77

hard drive recovery

Windows 120

Windows 7 125

Windows 8.1 120

hardware installation problems 90

HDMI option board

illustrated 9

heat sink

illustrated 9

removal and replacement 43, 45

Help and Support

Windows 7 122

helpful hints 71

hood sensor assembly 9

HP PC Hardware Diagnostics (UEFI)

downloading 113

HP Recovery Disc Creator, using 123

HP Ultraslim Keyed Cable Lock 9

installing

battery 34

hard drive 23

Index 133

memory 39

solid state drive 28

Internet access problems 99

keyboard

cleaning 15

keyboard problems 88

media card reader

problems 79

memory

installation 39

maximum 39

problems 94

removal and replacement 41

slots 39

socket population 40

SODIMMs specications 39

specications 39

memory modules

illustrated 7, 39

monitor problems 80

mouse

cleaning 16

problems 88

network problems 91

numeric error codes 102

operating guidelines 14

operating system media, Windows

8 121

operating system media, Windows

8.1 121

optical drive

problems 95

option board, DisplayPort

illustrated 9

option board, HDMI

illustrated 9

option board, serial port

illustrated 9

overheating, prevention 14

password

administrator 109

clearing 109

power-on 109

POST error messages 102

power cord set requirements

country specic 130

power problems 76

power supply

illustrated 6

operating voltage range 132

power switch/light cover

illustrated 9

removal and replacement 38

power-on password 109

printer problems 87

problems

audio 85

CD-ROM or DVD 95

Computer Setup 72

F10 Setup 72

ash drive 98

front panel 99

general 72

hard drive 77

hardware installation 90

Internet access 99

keyboard 88

Media Card Reader 79

memory 94

monitor 80

mouse 88

network 91

power 76

printer 87

software 101

product ID location 5

rear panel components

EliteDesk 705 3

EliteDesk 800 3

MP9 3

ProDesk 400 4

ProDesk 600 3

recovery discs, steps for creating

Windows 7 123

recovery discs, using for restore

127

recovery media, creating 123

recovery media, creating Windows

7 122

recovery partition, Windows 8 120

recovery partition, Windows 8.1

120

recovery USB ash drive, steps for

creating Windows 7 123

recovery using Windows 8 operating

system media 121

recovery using Windows 8.1

operating system media 121

removal and replacement

antenna (external) 32

battery 34

drive cage 27

expansion connector board 48

external antenna 32

fan 26, 37

front bezel 22

hard drive 23, 28

heat sink 43, 45

memory 41

power switch/light cover 38

speaker 47

system board 49

thermal sensor 36

top cover 21

WLAN antennas 54

WLAN module 30

removing

battery 34

hard drive 23

solid state drive 28

resetting

CMOS 109

password jumper 109

restoring the hard drive, Windows

120

restoring the hard drive, Windows

8.1 120

safety and comfort 70

safety precautions

cleaning 15

SATA

connectors on system board 17

data cable pinouts 18

hard drive characteristics 17

SATA cable

illustrated 8

screws, correct size 16

134 Index

secondary hard drive fan

illustrated 9

serial number location 5

serial port option board

illustrated 9

service considerations 16

SODIMM

specications 39

software

problems 101

servicing computer 16

solid state drive

installation 28

removal 28

speaker

illustrated 9

removal and replacement 47

specications

computer 132

specications, memory 39

static electricity 12

system board

illustrated 6

removal and replacement 49

SATA connectors 17

System Recovery using Windows 7

recovery media 126

System Recovery, Windows 7 125

system restore points, creating

Windows 7 122

System Restore, Windows 7 125

tamper-proof screws

tool 16

temperature control 14

thermal sensor

illustrated 9

removal and replacement 36

tools, servicing 16

top cover

illustrated 6

removal and replacement 21

Torx T15 screwdriver 16

tower conversion 57

ventilation, proper 14

Windows 10

backup and restore 115

Windows 7

backing up information 124

backup and recovery 121

Backup and Restore 124

creating backups 122

creating recovery media 122

creating system restore points

122

hard drive recovery 125

Help and Support 122

steps for creating recovery

discs 123

steps for creating recovery

media 122

steps for creating recovery USB

ash drive 123

System Recovery 125

System Recovery using recovery

media 126

System Restore 125

Windows 7 operating system discs

using for restore 127

Windows 7 operating system DVD

creating 123

using for restore 127

Windows 7 operating system media

creating 123

Windows 8

backup and restore 119

Driver Recovery media 121

f11 recovery 120

hard drive recovery 120

operating system DVD 121

recovery partition 120

restoring the hard drive 120

Windows 8.1

backup and restore 119

Driver Recovery media 121

f11 recovery 120

hard drive recovery 120

operating system DVD 121

recovery partition 120

restoring the hard drive 120

WLAN antennas

removal and replacement 54

WLAN module

removal and replacement 30

Index 135

Table of Contents

HP 600 G2 DM User Manual

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