Table of Contents
- Product features
- Illustrated parts catalog
- Routine care, SATA drive guidelines, and disassembly preparation
- Removal and replacement procedures – Microtower (MT) chassis
- Preparation for disassembly
- Access panel
- Front bezel
- Front bezel security
- Slim optical drive bezel blank
- Memory
- Expansion cards
- Drives
- Front I/O and power switch assembly
- Speaker
- Rear chassis fan
- Power supply
- Fan sink
- Processor for use in HP 280 G2 models (Intel)
- Processor for use in HP 285 G2 models (AMD)
- System board
- Computer Setup (F10) Utility
- Troubleshooting without diagnostics
- Safety and comfort
- Before you call for technical support
- Helpful hints
- Solving general problems
- Solving power problems
- Solving hard drive problems
- Solving media card reader problems
- Solving display problems
- Solving audio problems
- Solving printer problems
- Solving keyboard and mouse problems
- Solving hardware installation problems
- Solving network problems
- Solving memory problems
- Solving CD-ROM and DVD problems
- Solving USB flash drive problems
- Solving front panel component problems
- Solving Internet access problems
- Solving software problems
- POST error messages and diagnostic front panel LEDs and audible codes
- Password security and resetting CMOS
- Using HP PC Hardware Diagnostics (UEFI)
- System backup and recovery
- Battery replacement
- Power Cord Set Requirements
- Statement of Volatility
- Specifications
- Index
HP 280 G2 User Manual
Displayed below is the user manual for 280 G2 by HP which is a product in the PCs/Workstations category. This manual has pages.
Related Manuals
Maintenance and Service Guide
HP 280 G2 Microtower Business PC
HP 285 G2 Microtower Business PC
© Copyright 2016 HP Development Company,
L.P.
AMD is a trademark of Advanced Micro Devices,
Inc. Bluetooth is a trademark owned by its
proprietor and used by Hewlett-Packard
Company 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 (February 2016)
Document Part Number: 854096-001
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 airow. 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 dened 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 conguration features ........................................................................................................................... 1
Front panel components ........................................................................................................................................ 2
Rear panel components ......................................................................................................................................... 3
Serial number location .......................................................................................................................................... 3
2 Illustrated parts catalog ................................................................................................................................ 4
Microtower (MT) chassis spare parts ..................................................................................................................... 4
Computer major components ............................................................................................................. 4
Misc parts ............................................................................................................................................. 6
Misc boards .......................................................................................................................................... 8
Drives ................................................................................................................................................... 8
3 Routine care, SATA drive guidelines, and disassembly preparation .................................................................... 9
Electrostatic discharge information ...................................................................................................................... 9
Generating static ................................................................................................................................. 9
Preventing electrostatic damage to equipment ............................................................................... 10
Personal grounding methods and equipment .................................................................................. 10
Grounding the work area ................................................................................................................... 10
Recommended materials and equipment ........................................................................................ 11
Operating guidelines ........................................................................................................................................... 11
Routine care ......................................................................................................................................................... 12
General cleaning safety precautions ................................................................................................ 12
Cleaning the Computer Case ............................................................................................................. 12
Cleaning the keyboard ....................................................................................................................... 12
Cleaning the monitor ......................................................................................................................... 13
Cleaning the mouse ........................................................................................................................... 13
Service considerations ......................................................................................................................................... 13
Power supply fan ............................................................................................................................... 13
Tools and software Requirements .................................................................................................... 13
Screws ............................................................................................................................................... 14
Cables and connectors ...................................................................................................................... 14
Hard Drives ........................................................................................................................................ 14
Lithium coin cell battery .................................................................................................................... 14
SATA hard drives .................................................................................................................................................. 15
SATA hard drive cables ......................................................................................................................................... 15
v
SATA data cable ................................................................................................................................. 15
SMART ATA drives ................................................................................................................................................ 15
Cable management .............................................................................................................................................. 16
4 Removal and replacement procedures – Microtower (MT) chassis .................................................................... 17
Preparation for disassembly ............................................................................................................................... 17
Access panel ......................................................................................................................................................... 18
Front bezel ........................................................................................................................................................... 19
Front bezel security ............................................................................................................................................. 20
Slim optical drive bezel blank .............................................................................................................................. 21
Memory ................................................................................................................................................................ 22
DIMMs ................................................................................................................................................ 22
DIMM specications ........................................................................................................................... 22
Populating DIMM sockets .................................................................................................................. 22
Installing DIMMs ................................................................................................................................ 23
Expansion cards ................................................................................................................................................... 25
Drives ................................................................................................................................................................... 28
Drive positions ................................................................................................................................... 29
Removing a 9.5 mm slim optical drive .............................................................................................. 30
Installing a 9.5 mm slim optical drive ............................................................................................... 31
Removing a hard drive ...................................................................................................................... 33
Installing a hard drive ........................................................................................................................ 34
Front I/O and power switch assembly ................................................................................................................. 37
Speaker ................................................................................................................................................................ 39
Rear chassis fan ................................................................................................................................................... 40
Power supply ....................................................................................................................................................... 41
Fan sink ................................................................................................................................................................ 44
Processor for use in HP 280 G2 models (Intel) .................................................................................................... 45
Processor for use in HP 285 G2 models (AMD) .................................................................................................... 46
System board ....................................................................................................................................................... 47
System board callouts – HP 280 Pro G2 Microtower models ........................................................... 48
System board callouts – HP 280 G2 Microtower models .................................................................. 49
System board callouts – HP 285 G2 Microtower models .................................................................. 50
5 Computer Setup (F10) Utility ........................................................................................................................ 51
Computer Setup (F10) Utilities ............................................................................................................................ 51
Using Computer Setup (F10) Utilities ................................................................................................ 52
Computer Setup—File ....................................................................................................................... 53
Computer Setup—Storage ................................................................................................................ 54
Computer Setup—Security ............................................................................................................... 55
Computer Setup—Power .................................................................................................................. 57
vi
Computer Setup—Advanced ............................................................................................................. 57
Recovering the Conguration Settings ............................................................................................................... 58
6 Troubleshooting without diagnostics ............................................................................................................ 59
Safety and comfort .............................................................................................................................................. 59
Before you call for technical support .................................................................................................................. 59
Helpful hints ........................................................................................................................................................ 60
Solving general problems .................................................................................................................................... 61
Solving power problems ...................................................................................................................................... 65
Solving hard drive problems ................................................................................................................................ 66
Solving media card reader problems ................................................................................................................... 68
Solving display problems .................................................................................................................................... 69
Solving audio problems ....................................................................................................................................... 73
Solving printer problems ..................................................................................................................................... 75
Solving keyboard and mouse problems .............................................................................................................. 76
Solving hardware installation problems ............................................................................................................. 78
Solving network problems .................................................................................................................................. 79
Solving memory problems .................................................................................................................................. 82
Solving CD-ROM and DVD problems .................................................................................................................... 83
Solving USB ash drive problems ........................................................................................................................ 85
Solving front panel component problems .......................................................................................................... 86
Solving Internet access problems ....................................................................................................................... 87
Solving software problems .................................................................................................................................. 88
7 POST error messages and diagnostic front panel LEDs and audible codes ......................................................... 89
POST numeric codes and text messages ............................................................................................................. 89
Interpreting system validation diagnostic front panel LEDs and audible codes ................................................ 94
8 Password security and resetting CMOS .......................................................................................................... 96
Resetting the password jumper .......................................................................................................................... 96
Changing a Setup or Power-On password ........................................................................................................... 97
Deleting a Setup or Power-On password ............................................................................................................ 98
9 Using HP PC Hardware Diagnostics (UEFI) ....................................................................................................... 99
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device .................................................................... 99
10 System backup and recovery ..................................................................................................................... 101
Backing up, restoring, and recovering in Windows 10 ...................................................................................... 101
Creating recovery media and backups ............................................................................................ 101
Creating HP Recovery media (select products only) .................................................... 101
vii
Using Windows tools ....................................................................................................................... 102
Restore and recovery ...................................................................................................................... 102
Recovering using HP Recovery Manager ...................................................................... 103
What you need to know before you get started ........................................ 103
Using the HP Recovery partition (select products only) ............................ 104
Using HP Recovery media to recover ......................................................... 104
Changing the computer boot order ............................................................ 104
Removing the HP Recovery partition (select products only) ..................... 104
Backing up, restoring, and recovering in Windows 7 ........................................................................................ 105
Creating recovery media ................................................................................................................. 105
Creating recovery media using HP Recovery Manager (select models only) ............... 106
Creating recovery discs with HP Recovery Disc Creator (select models only) ............. 107
Creating recovery discs .............................................................................. 107
Backing up your information ........................................................................................ 107
System Restore ............................................................................................................................... 108
System Recovery ............................................................................................................................. 108
System Recovery when Windows is responding .......................................................... 109
System Recovery when Windows is not responding .................................................... 109
System Recovery using recovery media (select models only) ..................................... 110
Using HP Recovery Disc operating system discs (select models only) ........................ 110
Appendix A Battery replacement ................................................................................................................... 112
Appendix B Power Cord Set Requirements ...................................................................................................... 115
General Requirements ....................................................................................................................................... 115
Japanese Power Cord Requirements ................................................................................................................. 115
Country-Specic Requirements ........................................................................................................................ 116
Appendix C Statement of Volatility ................................................................................................................ 117
Appendix D Specications ............................................................................................................................. 119
MT Specications ............................................................................................................................................... 119
Index ........................................................................................................................................................... 120
viii
1 Product features
Standard conguration features
Features may vary depending on the model. For support assistance and to learn more about the hardware
and software installed on your computer model, run the HP Support Assistant utility.
Standard conguration features 1
Front panel components
Drive conguration may vary by model. Some models have a bezel blank covering the optical drive bay.
Item Component Item Component
1 Slim Optical Drive (optional) 4 USB 2.0 Ports (2)
2 Dual-State Power Button 5 Microphone/Headphone Connector
3 Status LED 6 SD Card Reader (optional)
NOTE: When a device is plugged into the Microphone/Headphone Connector, a dialog box will pop up asking if you want to use the
connector for a microphone Line-In device or a headphone. You can recongure the connector at any time by double-clicking the
Audio Manager icon in the Windows taskbar.
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.
2 Chapter 1 Product features
Rear panel components
Item Component Item Component
1 RJ-45 Network Connector 6 Line-In Audio Connector (blue); Line-In
Audio Connector (blue)
2 USB 2.0 Ports (2) 7 Power Cord Connector
3 DVI-D Monitor Connector 8 Security Lock Slot
4 VGA Monitor Connector 9 USB 2.0 Ports (2)
5 USB 3.0 Ports (2)
NOTE: An optional second serial port and an optional parallel port are available from HP.
When a device is plugged into the blue Line-In Audio Connector, a dialog box will pop up asking if you want to use the
connector for a line-in device or a microphone. You can recongure the connector at any time by double-clicking the
Audio Manager icon in the Windows taskbar.
When a graphics card is installed in one of the system board slots, the video connectors on the graphics card and/or
the integrated graphics on the system board may be used. The specic graphics card installed and software
conguration will determine the behavior.
The system board graphics can be disabled by changing settings in Computer Setup.
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.
Rear panel components 3
2 Illustrated parts catalog
Microtower (MT) 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) Access panel
(2) Front bezel
(3) Power supply
300W, APFC (For use only in HP 280 G2 Microtower models in the People’s Republic of China)
300W, Energy Star (For use only in HP 280 G2 Microtower models in the People’s Republic of China)
180W, Energy Star
180W, Energy Star for use in the APJ region
4 Chapter 2 Illustrated parts catalog
Item Description
180W, APFC
180W, standard (available only for NA, LA and APJ regions, except the People’s Republic of China and India)
(4) Fan sink (includes replacement thermal material)
System board (includes replacement thermal material)
(5) HP 280 Pro G2 Microtower models
(6) HP 280 G2 Microtower models
(7) HP 285 G2 Microtower models
*Memory modules for HP 280 G2 models (PC4-17000, 2133-MHz)
16-GB
8-GB
4-GB
*Memory modules for HP 285 G2 models (PC3-12800, 1600-MHz)
8-GB
4-GB
2-GB
*Processors for HP 280 G2 models (include replacement thermal material)
Intel Core i7-6700, 3.4 GHz
Intel Core i5-6600, 3.3 GHz
Intel Core i5-6500, 3.2 GHz
Intel Core i3-6320, 3.9 GHz
Intel Core i3-6300, 3.8 GHz
Intel Core i3-6100, 3.7 GHz
Intel Pentium G4520, 3.6 GHz
Intel Pentium G4500, 3.5 GHz
Intel Pentium G4400, 3.3 GHz
Intel Celeron G3920, 2.9 GHz
Intel Celeron G3900, 2.8 GHz
*Processors for HP 285 G2 models (include replacement thermal material)
AMD A10-8750B, 3.6 GHz
AMD A10-7800B, 3.57 GHz
AMD A8-8650B, 3.2 GHz
AMD A8-7600B, 3.1 GHz
AMD A6-8550B, 3.7 GHz
AMD A6-6420B, 4.0 GHz
Microtower (MT) chassis spare parts 5
Item Description
AMD A6-6400B, 3.9 GHz
AMD A6-5400B, 3.6 GHz
AMD A4-7300B, 3.8 GHz
AMD A4-6300B, 3.7 GHz
AMD A4-5300B, 3.4 GHz
*not illustrated
Misc parts
6 Chapter 2 Illustrated parts catalog
Item Description
(1) Fan
(2) Front I/O assembly
(3) Speaker
(4) Printer port, PCI card
(5) Secure Digital (SD) card reader
(6) Serial port with cable
(7) Power adapter for optical drive
(8) SATA data cable, 280 mm, 1 straight end, 1 angled end
(9) SATA data cable, 254 mm, 2 straight ends
*Slim optical drive bezel blank
*Hard drive conversion bracket, 2.5-inch to 3.5-inch (HP 280 G2 models only)
*HP Business PC Security Lock
*Keyed cable lock
*Grommet, hard drive isolation, blue
*Intel PRO/1000 Single Port GbE (network adapter)(HP 280 G2 models only)
*HP webcam (720p)
*Wireless antenna for use with WLAN modules
*Mouse
PS2, optical
USB, optical
Antimicrobial (for use only in the People’s Republic of China)
USB, unbranded
HP USB Hardened
*Keyboards
PS/2
PS/2 slim
USB, antimicrobial
HP USB slim
USB
Unbranded
*not illustrated
Microtower (MT) chassis spare parts 7
Misc boards
Description
AMD R5 320, 1 GB GDDR3, PCIe x16
nVIDIA GT730, 2 GB DDR3, PCIex8
nVIDIA GT720, 2 GB DDR3, PCIex8
Intel PRO/1000 Single Port GbE (network adapter)(HP 280 G2 models only)
Printer port
Serial port
WLAN module, 802.11 a/b/g/n, 2x2, with Bluetooth 4.0
WLAN module caddy card + Bluetooth
Drives
Description
Hard drives/Solid-state drives
2-TB, 7200-rpm
1-TB, 7200-rpm
500-GB, 7200-rpm
256 GB Solid-state Drive (SSD), 2.5 inch (HP 280 G2 models only)
128 GB Solid-state Drive (SSD), 2.5 inch (HP 280 G2 models only)
Grommet, hard drive isolation, blue
Optical drives
DVD±RW drive
DVD-ROM drive
8 Chapter 2 Illustrated parts catalog
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 aected 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:
●Dierent activities generate dierent 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
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.
Electrostatic discharge information 9
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.
10 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
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 airow.
●Never restrict the airow 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 airow.
●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 airow. 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.
Operating guidelines 11
●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 12 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 airow.
Cleaning the keyboard
Follow all safety precautions in General cleaning safety precautions on page 12 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 12.
When cleaning debris from under the keys, review all rules in General cleaning safety precautions on page 12
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.
12 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
●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 conned 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 12.
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 12.
Service considerations
Listed below are some of the considerations that you should keep in mind during the disassembly and
assembly of the computer.
Power supply fan
The power supply fan is a variable-speed fan based on the temperature in the power supply.
CAUTION: The cooling fan is always on when the computer is in the “On” mode. The cooling fan is o when
the computer is in “Standby,” “Suspend,” or “O” modes.
You must disconnect the power cord from the power source before opening the computer to prevent system
board or component damage.
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
Service considerations 13
Screws
The screws used in the computer are not interchangeable. They may have standard or metric threads and may
be of dierent 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.
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.
14 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
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
Maximum data cable length 39.37 in (100 cm)
Data interface voltage dierential 400-700 mV
Drive voltages 3.3 V, 5 V, 12 V
Jumpers for conguring 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 overexed. 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.
SATA hard drives 15
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.
16 Chapter 3 Routine care, SATA drive guidelines, and disassembly preparation
4 Removal and replacement procedures –
Microtower (MT) 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.
Preparation for disassembly
See Routine care, SATA drive guidelines, and disassembly preparation on page 9 for initial safety procedures.
1. Remove/disengage any security devices that prohibit opening the computer.
2. Close any open software applications.
3. Exit the operating system.
4. Remove any compact disc or media card from the computer.
5. Turn o the computer and any peripheral devices that are connected to it.
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.
6. Disconnect the power cord from the electrical outlet and then from the computer.
7. As applicable, lay the computer down on its side to achieve a safe working position.
NOTE: During disassembly, label each cable as you remove it, noting its position and routing. Keep all
screws with the units removed.
CAUTION: The screws used in the computer are of dierent thread sizes and lengths; using the wrong screw
in an application may damage the unit.
Preparation for disassembly 17
Access panel
To access internal components, you must remove the access panel:
1. Prepare the computer for disassembly (Preparation for disassembly on page 17)
2. Remove the two Torx screws (1), and then slide the panel back (2) and lift it o the computer (3).
To replace the access panel, reverse the disassembly procedures.
18 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Front bezel
1. Prepare the computer for disassembly (Preparation for disassembly on page 17)
2. Remove the access panel (Access panel on page 18)
3. Lift up the three tabs on the side of the bezel (1), and then rotate the bezel o the chassis (2).
To replace the front bezel, reverse the disassembly procedures.
Front bezel 19
Front bezel security
The front bezel can be secured in place by installing a screw through the front of the chassis into the front
bezel.
1. Prepare the computer for disassembly (Preparation for disassembly on page 17)
2. Remove the access panel (Access panel on page 18)
3. Install a 6-32 screw through the front of the chassis and into the screw hole located below the center
bezel release tab.
4. Replace the computer access panel.
5. Reconnect the power cord and any external devices, and then turn on the computer.
6. Lock any security devices that were disengaged when the access panel was removed.
20 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Slim optical drive bezel blank
On some models, there is a bezel blank covering the slim optical drive bay. Remove the bezel blank before
installing an optical drive. To remove the bezel blank:
1. Remove the access panel (Access panel on page 18)
2. Remove the front bezel (Front bezel on page 19)
3. To remove the bezel blank, press upward on the bottom tab and press downward on the top tab on the
side of the blank (1), and then rotate the blank o the front of the bezel (2).
Slim optical drive bezel blank 21
Memory
Description
Memory modules for HP 280 G2 models (PC4-17000, 2133-MHz)
16-GB
8-GB
4-GB
Memory modules for HP 285 G2 models (PC3-12800, 1600-MHz)
8-GB
4-GB
2-GB
DIMMs
The memory sockets on the system board can be populated with up to two industry-standard DIMMs. These
memory sockets are populated with at least one preinstalled DIMM. To achieve the maximum memory
support, you can populate the system board with up to 16 GB of memory.
DIMM specications
For proper system operation, the DIMMs must meet the following qualications:
HP 280 G2 HP 285 G2
DIMM 1.5 volt DDR3-SDRAM DIMMs 1.2 volt DDR4-SDRAM DIMMs
Compliance unbuered non-ECC PC3-12800 DDR3-1600 MHz-
compliant
unbuered non-ECC PC4-17000 DDR4-2133 MHz-
compliant
Pins industry-standard 240-pin containing the
mandatory Joint Electronic Device Engineering
Council (JEDEC) specication
industry-standard 240-pin containing the
mandatory Joint Electronic Device Engineering
Council (JEDEC) specication
Support support CAS latency 11 DDR3 1600 MHz (11-11-11
timing)
support CAS latency 15 DDR4 2133 MHz (15-15-15
timing)
Slots 2 2
Maximum Memory 16 GB 16 GB
HP oers upgrade memory for this computer and advises that the consumer purchase it to avoid
compatibility issues with unsupported third-party memory.
Populating DIMM sockets
There are two DIMM sockets on the system board, with two sockets per channel. The sockets are labeled
XMM1 and XMM2. Socket XMM1 operates in memory channel A. Socket XMM2 operates in memory channel B.
The system will automatically operate in single channel mode, dual channel mode, or ex mode, depending
on how the DIMMs are installed.
22 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
NOTE: Single channel and unbalanced dual channel memory congurations will result in inferior graphics
performance.
●The system will operate in single channel mode if the DIMM sockets are populated in one channel only.
●The system will operate in a higher-performing dual channel mode if the total memory capacity of the
DIMMs in Channel A is equal to the total memory capacity of the DIMMs in Channel B. The technology and
device width can vary between the channels. For example, if Channel A is populated with two 1-GB
DIMMs and Channel B is populated with one 2-GB DIMM, the system will operate in dual channel mode.
●The system will operate in ex mode if the total memory capacity of the DIMMs in Channel A is not equal
to the total memory capacity of the DIMMs 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. For optimal speed, the channels should be balanced so that the
largest amount of memory is spread between the two channels. If one channel will have more memory
than the other, the larger amount should be assigned to Channel A. For example, if you are populating
the sockets with one 2-GB DIMM, and three 1-GB DIMMs, Channel A should be populated with the 2-GB
DIMM and one 1-GB DIMM, and Channel B should be populated with the other two 1-GB DIMMs. With this
conguration, 4-GB will run as dual channel and 1-GB will run as single channel.
●In any mode, the maximum operational speed is determined by the slowest DIMM in the system.
Installing DIMMs
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 briey 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 17)
2. Remove the access panel (Access panel on page 18)
3. Open both latches of the memory module socket (1), and insert the memory module into the socket (2).
NOTE: A memory module can be installed in only one way. Match the notch on the module with the tab
on the memory socket.
Populate the XMM1 socket before the XMM2 socket.
Memory 23
4. Push the module down into the socket, ensuring that the module is fully inserted and properly seated.
Make sure the latches are in the closed position (3).
5. Repeat steps 3 and 4 to install any additional modules.
6. Replace the computer access panel.
7. Reconnect the power cord and turn on the computer.
8. Lock any security devices that were disengaged when the access panel was removed.
The computer should automatically recognize the additional memory the next time you turn on the computer.
24 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Expansion cards
Description
AMD R5 320, 1 GB GDDR3, PCIe x16
nVIDIA GT730, 2 GB DDR3, PCIex8
nVIDIA GT720, 2 GB DDR3, PCIex8
Intel PRO/1000 Single Port GbE (network adapter)(HP 280 G2 models only)
Printer port
Serial port
WLAN module, 802.11 a/b/g/n, 2x2, with Bluetooth 4.0
WLAN module caddy card + Bluetooth
HP 280 G2 models have one PCI expansion socket (select models only), one PCI Express x1 expansion socket,
and one PCI Express x16 expansion socket.
HP 285 G2 models have one PCI expansion socket, one PCI Express x1 expansion socket, and one PCI Express
x16 expansion socket.
NOTE: You can install a PCI Express x1, x8, or x16 expansion card in the PCI Express x16 socket.
To remove, replace, or add an expansion card:
1. Prepare the computer for disassembly (Preparation for disassembly on page 17)
2. Remove the access panel (Access panel on page 18)
3. Release the slot cover retention latch that secures the slot covers by removing the Torx screw (1), sliding
the latch up (2), and pulling the latch away from the computer (3).
4. Locate the correct vacant expansion socket on the system board and the corresponding expansion slot
on the back of the computer chassis.
Expansion cards 25
5. Before installing an expansion card, remove the expansion slot cover or the existing expansion card.
NOTE: Before removing an installed expansion card, disconnect any cables that may be attached to
the expansion card.
a. If you are installing an expansion card in a vacant socket, you must slide one of the expansion slot
covers up and out of the chassis or use a atblade screwdriver to pry out one of the metal shields
on the rear panel that covers the expansion slot. Be sure to remove the appropriate shield for the
expansion card you are installing.
b. If you are removing a PCI Express x1 card, hold the card at each end and carefully rock it back and
forth until the connectors pull free from the socket. Lift the card straight up (1) then away from the
inside of the chassis (2) to remove it. Be sure not to scrape the card against other components.
26 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
c. If you are removing a PCI Express x16 card, pull the retention arm on the back of the expansion
socket away from the card and carefully rock the card back and forth until the connectors pull free
from the socket. Lift the card straight up then away from the inside of the chassis to remove it. Be
sure not to scrape the card against other components.
6. Store the removed card in anti-static packaging.
7. If you are not installing a new expansion card, install an expansion slot cover to close the open slot.
CAUTION: After removing an expansion card, you must replace it with a new card or expansion slot
cover for proper cooling of internal components during operation.
To replace an expansion card, reverse the removal procedures.
Recongure the computer, if necessary.
Expansion cards 27
Drives
Description
Hard drives/Solid-state drives
2-TB, 7200-rpm
1-TB, 7200-rpm
500-GB, 7200-rpm
256 GB Solid-state Drive (SSD), 2.5 inch (HP 280 G2 models only)
128 GB Solid-state Drive (SSD), 2.5 inch (HP 280 G2 models only)
Grommet, hard drive isolation, blue
Optical drives
DVD±RW drive
DVD-ROM drive
When installing drives, follow these guidelines:
●The primary Serial ATA (SATA) hard drive must be connected to the dark blue primary SATA connector on
the system board labeled SATA0.
●Connect secondary hard drives and optical drives to one of the remaining SATA connectors on the
system board (labeled SATA1 and SATA2).
●HP has provided four extra 6-32 hard drive mounting screws installed on the front of the chassis next to
the hard drive bays (1). If you are replacing a hard drive, remove the mounting screws from the old drive
and install them in the new drive.
28 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
CAUTION: To prevent loss of work and damage to the computer or drive:
If you are inserting or removing a drive, shut down the operating system properly, turn o the computer, and
unplug the power cord. Do not remove a 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. For more information about preventing electrostatic damage, refer to Electrostatic
discharge information on page 9.
Handle a drive carefully; do not drop it.
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.
If a drive must be mailed, place the drive in a bubble-pack mailer or other protective packaging and label the
package “Fragile: Handle With Care.”
Drive positions
Item Component
1 9.5-mm slim optical drive bay
2 3.5-inch secondary hard drive bay
3 3.5-inch primary hard drive bay
NOTE: The drive conguration on your computer may be dierent than the drive conguration shown above.
To verify the type and size of the storage devices installed in the computer, run Computer Setup.
Drives 29
Removing a 9.5 mm slim optical drive
1. Prepare the computer for disassembly (Preparation for disassembly on page 17)
2. Remove the access panel (Access panel on page 18)
3. Remove the front bezel (Front bezel on page 19)
4. Disconnect the power cable (1) and data cable (2) from the rear of the optical drive.
CAUTION: When removing the cables, pull the tab or connector instead of the cable itself to avoid
damaging the cable.
CAUTION: When removing the cables, pull the tab or connector instead of the cable itself to avoid
damaging the cable.
5. Press upward on the green release latch on the underside of the drive (1), and then slide the drive out of
the drive bay (2).
30 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Installing a 9.5 mm slim optical drive
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. If you are installing a slim optical drive in a bay covered by a bezel blank, remove the front bezel and
then remove the bezel blank. See Front bezel on page 19 for more information.
4. Follow the instructions for removing the optical drive if one was installed. Refer to Removing a 9.5 mm
slim optical drive on page 30.
5. Align the small pin on the release latch with the small hole on the side of the drive and press the latch
rmly onto the drive.
6. Slide the optical drive through the front of the chassis (1) all the way into the bay so that the green latch
locks onto the chassis frame (2).
Drives 31
7. Connect the power cable (1) and data cable (2) to the rear of the optical drive.
8. If installing a new drive, connect the opposite end of the data cable to one of the SATA connectors
(labeled SATA1 or SATA2) on the system board.
9. Replace the front bezel if it was removed.
10. Replace the computer access panel.
11. Reconnect the power cord and any external devices, and then turn on the computer.
12. Lock any security devices that were disengaged when the access panel was removed.
32 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Removing a hard drive
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 17).
2. Remove the access panel (Access panel on page 18).
3. Disconnect the power cable (1) and data cable (2) from the rear of the hard drive.
4. Pull the green latch next to the drive outward (1) and slide the drive out of the bay (2).
Drives 33
Installing a hard drive
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. You can install a 3.5-inch hard drive or a 2.5-inch hard drive with a 3.5-inch adapter bracket similar to
the example shown below.
●Slide the 2.5-inch drive into the bay adapter bracket, ensuring the connector on the drive is fully
inserted into the connector on the adapter bracket.
●Secure the drive to the bay adapter bracket by installing four black M3 adapter bracket screws
through the sides of the bracket into the drive.
34 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
4. Install four mounting screws into the sides of the 3.5-inch drive or the 2.5-inch drive adapter bracket
(two on each side).
NOTE: HP has supplied four extra mounting screws installed on the chassis next to the hard drive bays.
Refer to Drives on page 28 for an illustration of the location of the extra mounting screws.
5. Slide the drive into the drive bay, making sure to align the mounting screws with the guide slots, until
the drive snaps into place.
Drives 35
6. Connect the power cable (1) and data cable (2) to the rear of the hard drive.
7. If installing a new drive, connect the opposite end of the data cable to the appropriate system board
connector.
NOTE: You must connect the primary hard drive data cable to the dark blue connector labeled SATA0 to
avoid any hard drive performance problems. If you are adding a second hard drive, connect the data
cable to one of the SATA connectors labeled SATA1 or SATA2.
8. Replace the computer access panel.
9. Reconnect the power cord and any external devices, and then turn on the computer.
10. Lock any security devices that were disengaged when the access panel was removed.
36 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Front I/O and power switch assembly
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the computer access panel (Access panel on page 18).
3. Remove the front bezel (Front bezel on page 19).
4. Remove the cables from the clips on the base pan.
5. Disconnect the three cables from the following system board connectors:
F_PANEL (black)
F_USB1 (white)
F_AUDIO (yellow)
Front I/O and power switch assembly 37
6. Remove the Torx screw (1) that secures the assembly to the chassis, push the tab on the right side of
the assembly (2) to disengage it from the chassis, and push the assembly into the chassis (3).
7. Remove the assembly from the inside of the computer.
To reinstall the assembly, reverse the removal procedure.
38 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Speaker
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. Remove the front bezel (Front bezel on page 19).
4. From the outside, front of the chassis, remove the two Torx screws that secure the speaker to the
chassis.
5. Disconnect the speaker wire from the system board connector labeled SPKR (1).
6. Remove the speaker from the chassis (2).
To replace the speaker, reverse the removal procedures.
Speaker 39
Rear chassis fan
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. Remove the three silver Phillips screws that secure the fan to the rear of chassis.
4. Disconnect the fan control cable (1) from the system board connector labeled SYS_FAN.
5. Lift the fan out of the chassis (2).
To install the fan assembly, reverse the removal procedure. Be sure to orient the air ow out of the unit.
40 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Power supply
Description
300W, APFC (For use only in HP 280 G2 Microtower models in the People’s Republic of China)
300W, Energy Star (For use only in HP 280 G2 Microtower models in the People’s Republic of China)
180W, Energy Star
180W, Energy Star for use in the APJ region
180W, APFC
180W, standard (available only for NA, LA and APJ regions, except the People’s Republic of China and India)
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. Remove the four silver Torx screws that connect the power supply to the rear of the chassis.
Power supply 41
4. Remove the power cable from the clip on the base pan.
5. Disconnect the power supply cables from the following system board connectors:
ATX_CPU
ATX_PWR
6. Press the tab (1) on the base pan in front of the power supply that holds it in place.
42 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
7. Slide the power supply toward the front of the computer, rotate toward the fan so the power supply
clears the lip on the top of the chassis, and then lift the power supply out of the chassis (2).
To install the power supply, reverse the removal procedure.
Power supply 43
Fan sink
CAUTION: The bond between the fan sink and the processor may be very tight.
If the computer will power on, before removing the fan sink, turn on the computer until it warms the fan sink.
Warming the fan sink lessens the bond between the heat sink and the processor, thereby making separating
them easier.
Make sure not to pull the processor out of the socket when you lift the fan sink, especially if you cannot warm
the fan sink prior to removal. Inadvertently removing the processor can damage the pins.
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. Loosen the four silver captive Torx screws (1) that secure the fan sink to the system board.
CAUTION: Remove fan sink retaining screws in diagonally opposite pairs (as in an X) to even the
downward forces on the processor. The pins on the socket are very fragile and any damage to them may
require replacing the system board.
4. Disconnect the fan cable from the system board connector labeled CPU_FAN (2).
5. Lift the heat sink from atop the processor.
When reinstalling the fan sink, make sure that its bottom has been cleaned with an alcohol wipe and fresh
thermal grease has been applied to the top of the processor.
CAUTION: Fan sink retaining screws should be tightened in diagonally opposite pairs (as in an X) to evenly
seat the fan sink on the processor. This is especially important as the pins on the socket are very fragile and
any damage to them may require replacing the system board.
44 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
Processor for use in HP 280 G2 models (Intel)
Description Description
Intel Core i7-6700, 3.4 GHz Intel Pentium G4520, 3.6 GHz
Intel Core i5-6600, 3.3 GHz Intel Pentium G4500, 3.5 GHz
Intel Core i5-6500, 3.2 GHz Intel Pentium G4400, 3.3 GHz
Intel Core i3-6320, 3.9 GHz Intel Celeron G3920, 2.9 GHz
Intel Core i3-6300, 3.8 GHz Intel Celeron G3900, 2.8 GHz
Intel Core i3-6100, 3.7 GHz
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. Remove the fan sink (Fan sink on page 44).
4. Rotate the locking lever to its full open position (1).
5. Raise and rotate the microprocessor retainer to its fully open position (2).
6. 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.
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.
Processor for use in HP 280 G2 models (Intel) 45
Processor for use in HP 285 G2 models (AMD)
Description Description
AMD A10-8750B, 3.6 GHz AMD A6-6400B, 3.9 GHz
AMD A10-7800B, 3.57 GHz AMD A6-5400B, 3.6 GHz
AMD A8-8650B, 3.2 GHz AMD A4-7300B, 3.8 GHz
AMD A8-7600B, 3.1 GHz AMD A4-6300B, 3.7 GHz
AMD A6-8550B, 3.7 GHz AMD A4-5300B, 3.4 GHz
AMD A6-6420B, 4.0 GHz
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. Remove the fan sink (Fan sink on page 44).
4. Rotate the locking lever to its full open position (1).
5. Raise and rotate the microprocessor retainer to its fully open position (2), and then carefully lift the
processor from the socket (3).
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.
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 – Microtower (MT) chassis
System board
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. When replacing the system board, make sure the following components are removed from the defective
system board and installed on the replacement system board:
●Memory modules (Memory on page 22)
●Expansion cards (Expansion cards on page 25)
●Fan sink (Fan sink on page 44).
●Processor (Processor for use in HP 280 G2 models (Intel) on page 45)
4. Disconnect all cables connected to the system board, noting their location for reinstallation.
5. Remove the six Torx screws that secure the system board to the chassis.
6. Lift the system board up and out of the computer.
NOTE: System board appearance may vary.
When reinstalling the system board, rst insert the I/O panel back into the slots in the rear of the chassis, and
then align the board with the chassis screw holes.
NOTE: When replacing the system board, you must change the chassis serial number in the BIOS.
System board 47
System board callouts – HP 280 Pro G2 Microtower models
Sys Bd Label Color Component Sys Bd Label Color Component
PCI White Expansion card SATA1 White Any SATA Device other
than the primary hard
drive
PCIE_X1 Black Expansion card SATA2 Light blue Any SATA Device other
than the primary hard
drive
PCIE_X16 Black Expansion card F_PANEL Black Front IO/power switch
SYS_FAN Red Chassis fan PRT Black Optional printer port
ATX_CPU White 4-pin processor power COMB Black Optional serial port
PROCESSOR Silver Processor F_USB2 White Card reader
CPU_FAN White Processor fan BAT Black RTC battery
XMM2 Black Memory module F_USB1 White Front I/O
XMM1 Black Memory module CLR_PSWD Black Clear system passwords
ATX_PWR White 24-pin main power INT_SPKR White Internal speaker
SATA0 Dark blue Primary hard drive F_AUDIO Yellow Front I/O
48 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
System board callouts – HP 280 G2 Microtower models
Sys Bd Label Color Component Sys Bd Label Color Component
PCIE_X1 Black Expansion card SATA1 White Any SATA Device other
than the primary hard
drive
PCIE_X16 Black Expansion card SATA2 Light blue Any SATA Device other
than the primary hard
drive
SYS_FAN Red Chassis fan F_PANEL Black Front IO/power switch
ATX_CPU White 4-pin processor power F_USB2 White Card reader
PROCESSOR Silver Processor BAT Black RTC battery
CPU_FAN White Processor fan F_USB1 White Front I/O
XMM2 Black Memory module CLR_PSWD Black Clear system passwords
XMM1 Black Memory module INT_SPKR White Internal speaker
ATX_PWR White 24-pin main power F_AUDIO Yellow Front I/O
SATA0 Dark blue Primary hard drive
System board 49
System board callouts – HP 285 G2 Microtower models
Sys Bd Label Color Component Sys Bd Label Color Component
PCI White Expansion card ATX_POWER White 24-pin main power
CLR_PSWD Black Clear system passwords SATA1 White Any SATA Device other
than the primary hard
drive
PCIE_X1_1 Black Expansion card SATA2 Light blue Any SATA Device other
than the primary hard
drive
PCIE_X16 Black Expansion card SATA0 Dark blue Primary hard drive
BAT Black RTC battery F_PANEL Black Front IO/power switch
SYS_FAN1 Red Chassis fan LPT Black Printer port connector
CPU_PWR White 4-pin processor power F_USB2 White Card reader
PROCESSOR Silver Processor F_USB1 White Front I/O
CPU_FAN White Processor fan COMB Black Optional second serial
port
DIMM2 Black Memory module SPKR White Internal speaker
DIMM1 Black Memory module F_AUDIO Yellow Front I/O
50 Chapter 4 Removal and replacement procedures – Microtower (MT) chassis
5 Computer Setup (F10) Utility
Computer Setup (F10) Utilities
Use Computer Setup (F10) Utility to do the following:
●Change factory default settings.
●Set the system date and time.
●Set, view, change, or verify the system conguration, 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.
●Enable Quick Boot, which is faster than Full Boot but does not run all of the diagnostic tests run during a
Full Boot. You can set the system to:
■always Fast Boot (default);
■periodically Full Boot (from every 1 to 30 days); or
■always Full Boot.
●Select Post Messages Enabled or Disabled to change the display status of Power-On Self-Test (POST)
messages. Post Messages Disabled suppresses most POST messages, such as memory count, product
name, and other non-error text messages. If a POST error occurs, the error is displayed regardless of the
mode selected. To manually switch to Post Messages Enabled during POST, press any key (except F1
through F12).
●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 identication 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 a setup password that controls access to the Computer Setup (F10) Utility and the settings
described in this section.
●Secure integrated I/O functionality, including the USB ports, audio, or embedded NIC, so that they
cannot be used until they are unsecured.
●Enable or disable removable media boot ability.
●Solve system conguration errors detected but not automatically xed during the Power-On Self-Test
(POST).
●Replicate the system setup by saving system conguration information on a USB device and restoring it
on one or more computers.
●Execute self-tests on a specied ATA hard drive (when supported by drive).
●Enable or disable DriveLock security (when supported by drive).
Computer Setup (F10) Utilities 51
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 dierent 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.
NOTE: If the Computer Setup (F10) Utility is set to “fast boot”, use one of the following procedures to
access Computer Setup:
●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.
3. A choice of ve headings appears in the Computer Setup Utilities menu: File, Storage, Security, Power,
and Advanced.
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 File > Save Changes and Exit.
●If you have made changes that you do not want applied, select Ignore Changes and Exit.
●To reset to factory settings or previously saved default settings (some models), select Apply
Defaults and Exit. This option will restore the original factory system defaults.
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 CMOS could become corrupted. It is safe to turn o the computer only after exiting the F10 Setup
screen.
52 Chapter 5 Computer Setup (F10) Utility
Computer Setup—File
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-1 Computer Setup—File
Option Description
System Information Lists:
●Manufacturer
●Product name
●SKU number
●Serial number
●Asset Tag
●Ownership Tag
●Born on Date
●System board ID and CT number
●BIOS Revision
●BIOS Revision
●BIOS Date
●Processor type and speed
●Installed memory size/speed, number of channels (single or dual) (if applicable)
About Displays copyright notice.
Set Time and Date Allows you to set system time and date.
Default Setup Save Current Settings as Default
Saves the current system conguration settings as the default.
Restore Factory Settings as Default
Restores the factory system conguration settings as the default.
Apply Defaults and Exit Applies the currently selected default settings and clears any established passwords.
Ignore Changes and Exit Exits Computer Setup without applying or saving any changes.
Save Changes and Exit Saves changes to system conguration or default settings and exits Computer Setup.
Computer Setup (F10) Utilities 53
Computer Setup—Storage
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-2 Computer Setup—Storage
Option Description
Device
Conguration
Lists all installed BIOS-controlled storage devices.
When a device is selected, detailed information and options are displayed. The following options may be
presented:
●Hard Disk: Size, model, rmware version, serial number.
●CD-ROM: Model, rmware version, serial number.
Storage Options SATA Emulation
Allows you to choose how the SATA controller and devices are accessed by the operating system. Supported
options include: IDE and AHCI (default).
CAUTION: SATA emulation changes may prevent access to existing hard drive data and degrade or corrupt
established volumes.
IDE Mode- This is the default and most backwards-compatible setting of the options. Operating systems
usually do not require additional driver support in IDE mode. Use this option for "normal" (non-RAID)
congurations
AHCI Mode (default option) - Allows operating systems with AHCI device drivers loaded to take advantage of
more advanced features of the SATA controller.
Removable Media Boot
Enables/disables ability to boot the system from removable media. Default is enabled.
DPS Self-Test Allows you to execute self-tests on ATA hard drives capable of performing the Drive Protection System (DPS)
self-tests.
NOTE: This selection will only appear when at least one drive capable of performing the DPS self-tests is
attached to the system.
Boot Order Allows you to:
●UEFI Boot Sources: Specify the order in which EFI 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. Each
device on the list may be individually excluded from or included for consideration as a bootable operating
system source.
EFI boot sources always have precedence over legacy boot sources.
●Legacy Boot Sources: 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. Each device on the list may be individually excluded from or included for consideration as a
bootable operating system source.
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. To remove the device from consideration as a
bootable device, press F5.
You can use F5 to disable individual boot items, as well as disable EFI boot and/or legacy boot.
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 specied in Boot Order, restart the computer and
press Esc (to access the boot menu) and then F9 (Boot Order), or only F9 (skipping the boot menu) when the
monitor light turns green. After POST is completed, a list of bootable devices is displayed. Use the arrow keys to
54 Chapter 5 Computer Setup (F10) Utility
Table 5-2 Computer Setup—Storage (continued)
Option Description
select the preferred bootable device and press Enter. The computer then boots from the selected non-default
device for this one time.
Computer Setup—Security
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-3 Computer Setup—Security
Option Description
Setup Password Allows you to set and enable a setup (administrator) password.
NOTE: If the setup password is set, it is required to change Computer Setup options, ash the ROM, and
make changes to certain plug and play settings under Windows.
Power-On Password Allows you to set and enable a 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.
Password Options
(This selection appears
only if a power-on
password or setup
password is set.)
Allows you to enable/disable:
●Lock Legacy Resources (determines whether or not Windows Device Manager is allowed to change
resource settings for serial and parallel ports).
●Stringent security (enabling the stringent password disables the ability to reset the password by
moving the jumper on the system board). Default is disabled.
CAUTION: If you enable the stringent security feature and you forget the setup password or the
power-on password, the computer is inaccessible and can no longer be used.
If you lose or forget the password, the system board must be replaced. This scenario is not covered
under warranty.
To prevent the computer from becoming permanently unusable, record your congured setup
password or power-on password in a safe place away from your computer. Without these
passwords, the computer cannot be unlocked.
●Setup Browse Mode (appears if a setup password is set) (allows viewing, but not changing, the F10
Setup Options without entering setup password). Default is enabled.
●Password prompt on F9 & F12 (requires setup password to use these boot functions). Default is
enabled.
●Network Server Mode. Default is disabled.
Device Security Allows you to set Device Available/Device Hidden (default is Device Available) for:
●System audio
●Network controller
●SATA ports (varies by model)
USB Security Allows you to set Enabled/Disabled (default is Enabled) for:
●Front USB Ports
●Rear USB Ports
●Internal USB Ports
Slot Security Allows you to disable any PCI Express slot. Default is enabled.
Computer Setup (F10) Utilities 55
Table 5-3 Computer Setup—Security (continued)
Option Description
Network Boot Enables/disables the computer’s ability to boot from an operating system installed on a network server.
Default is enabled.
System IDs Allows you to set:
●Product Name
●Serial Number
●Universal Unique Identier (UUID) number. The UUID can only be updated if the current chassis serial
number is invalid. (These ID numbers are normally set in the factory and are used to uniquely
identify the system.)
●SKU Number
●Family Name
●Feature Byte. Default is enabled.
●Build ID
●Keyboard.
System Security (these
options are hardware
dependent)
NOTE: Available options are displayed depending on system conguration.
Virtualization Technology (VTx/VTd) (enable/disable) - Controls the virtualization features of the
processor. Changing this setting requires turning the computer o and then back on. Default is disabled.
Intel Software Guard Extensions (SGX) (Software controlled/enable/disable)
TPM Features – Lets you congure the following TPM settings:
TPM Device
Lets you set the Trusted Platform Module as available or hidden.
TPM State
Select to enable the TPM.
Clear TPM
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.
Secure Boot
Conguration
CAUTION: Changing the default setting of any of the Setup options on this page for operating systems
that do not support Secure Boot may prevent the system from booting successfully.
●Legacy Support—Enable/Disable. Allows you to turn o all legacy support on the computer,
including booting to DOS, running legacy graphics cards, booting to legacy devices, and so on. If set
to disable, legacy boot options in Storage > Boot Order are not displayed. Default is enabled.
●Secure Boot—Enable/Disable. Allows you to make sure an operating system is legitimate before
booting to it, making Windows resistant to malicious modication from preboot to full OS booting,
preventing rmware attacks. UEFI and Windows Secure Boot only allow code signed by pre-
approved digital certicates to run during the rmware and OS boot process. Default is disabled,
except for Windows systems which have this setting enabled. Secure Boot enabled also sets Legacy
Support to disabled.
●Key Management—This option lets you manage the custom key settings.
◦Clear Secure Boot Keys—Don't Clear/Clear. Allows you to delete any previously loaded custom
boot keys. Default is Don't Clear.
◦Key Ownership—HP Keys/Custom Keys. Selecting Custom Mode allows you to modify the
contents of the secure boot signature databases and the platform key (PK) that veries kernels
56 Chapter 5 Computer Setup (F10) Utility
Table 5-3 Computer Setup—Security (continued)
Option Description
during system start up, allowing you to use alternative operating systems. Selecting HP Keys
causes the computer boot using the preloaded HP-specic boot keys. Default is HP Keys.
●Fast Boot—Enable/Disable. Fast boot disables the ability to interrupt boot, such as pressing f keys
to access items before the operating system loads. Default is disabled.
NOTE: If Windows detects a serious error, it will interrupt the boot process automatically and
display advanced boot options.
From Windows, you can press Shift and select Restart to access the screen that lets you boot to a
device or troubleshoot your computer.
Computer Setup—Power
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-4 Computer Setup—Power
Option Description
OS Power Management ●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.
●Idle Power Savings—Extended/Normal. Allows certain operating systems to decrease the
processors power consumption when the processor is idle. Default is extended.
Hardware Power
Management
SATA Power Management – Enables or disables SATA bus and/or device power management. Default is
enabled.
S4/S5 Wake On LAN - Lets you set the computer to power on at the specied days/times set in the BIOS
power-on. Default is disabled.
Thermal Fan idle mode—This bar graph controls the minimum permitted fan speed.
NOTE: This setting only changes the minimum fan speed. The fans are still automatically controlled.
CPU Fan Speed—Shows the fan speed.
Computer Setup—Advanced
NOTE: Support for specic Computer Setup options may vary depending on the hardware conguration.
Table 5-5 Computer Setup—Advanced (for advanced users)
Option Heading
Power-On Options Allows you to set:
●POST messages (enable/disable). Enabling this feature will cause the system to display POST error
messages, which are error messages displayed on the monitor during the Power On Self Test if the
BIOS encounters some kind of problem while starting the PC. A POST error message will only display
on screen if the computer is capable of booting this far. If the POST detects an error before this
point, a beep code is generated instead. Default is disabled.
●After Power Loss (o/on/previous state). Default is Power o. Setting this option to:
◦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.
Computer Setup (F10) Utilities 57
Table 5-5 Computer Setup—Advanced (for advanced users) (continued)
◦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 you turn o power to the computer using the switch on a power strip, you will not be able to
use the suspend/sleep feature or the Remote Management features.
●POST Delay (in seconds). Enabling this feature will add a user-specied delay to the POST process.
This delay is sometimes needed for hard disks on some PCI cards that spin up very slowly, so slowly
that they are not ready to boot by the time POST is nished. The POST delay also gives you more
time to select F10 to enter Computer (F10) Setup. Default is None.
BIOS Power-On Allows you to set the computer to turn on automatically at a time you specify.
Bus Options Allows you to enable or disable:
●PCI SERR# Generation. Default is enabled.
●PCI VGA Palette Snooping, which sets the VGA palette snooping bit in PCI conguration space; only
needed when more than one graphics controller is installed. Default is disabled.
Device Options Allows you to set:
●Num Lock State at Power-On (On/O). Default is On.
●Printer Mode (Bi-directional/Output Only/EPP+ECP). Default is EPP+ECP.
●Multi-Processor (enable/disable). Use this option to disable multi-processor support under the OS.
Default is enabled.
●Internal Speaker (enable/disable). Use this option to enable the internal speaker.
●NIC PXE Option ROM Download (enable, disable). The BIOS contains an embedded NIC option ROM to
allow the unit to boot through the network to a PXE server. This is typically used to download a
corporate image to a hard drive. The NIC option ROM takes up memory space below 1MB commonly
referred to as DOS Compatibility Hole (DCH) space. This space is limited. This F10 option will allow
users to disable the downloading of this embedded NIC option ROM thus giving more DCH space for
additional PCI cards which may need option ROM space. The default is-enabled.
Recovering the Conguration 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—File on page 53 in the
Computer Setup—File table.)
NOTE: It is recommended that you save any modied computer conguration settings to a USB ash media
device and save the device for possible future use.
To restore the conguration, insert the USB ash media device with the saved conguration and perform the
Restore from Removable Media command with the Computer Setup (F10) Utility. (See Computer Setup—File
on page 53 in the Computer Setup—File table.)
58 Chapter 5 Computer Setup (F10) Utility
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 specic 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 89.
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 51 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 89 for more information.
●If the screen is blank, plug the monitor into a dierent 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 dierent 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 Conguration.”
●Refer to the comprehensive online technical support at http://www.hp.com/support.
●Refer to Helpful hints on page 60 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 notication, and worldwide community of peers and HP experts.
Safety and comfort 59
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 89 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.
●Recongure the computer after installing a non-plug and play expansion board or other option. See
Solving hardware installation problems on page 78 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.
60 Chapter 6 Troubleshooting without diagnostics
●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 briey 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.
Solving general problems 61
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 10, type control panel in
the taskbar search box, and then select Control Panel.
Cursor will not move using the arrow keys on the keypad.
Cause Solution
The Num Lock key is turned on. Press the Num Lock key. The Num Lock light must be o if you
want to use the arrow keys on the keypad. You can also disable or
enable the Num Lock key in Computer Setup at Advanced >
Device Options.
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
aect 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.
62 Chapter 6 Troubleshooting without diagnostics
Poor performance.
Cause Solution
Processor is too hot. 1. Make sure airow 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
airow.
2. Make sure fans are connected and working properly (some
fans only operate when needed).
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 Conguration 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 mscong.
b. On the Startup tab of the System Conguration 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.
Solving general problems 63
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.
OR
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.
OR
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.
64 Chapter 6 Troubleshooting without diagnostics
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.
OR
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.
Solving power problems 65
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 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 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 (identied).
Cause Solution
Cable could be loose. Check cable connections.
The system may not have automatically recognized a newly
installed device.
See reconguration directions in the Solving hardware installation
problems on page 78 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 Security > Device Security.
Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >
Power-On Options.
66 Chapter 6 Troubleshooting without diagnostics
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 Storage > Boot Order list.
Bootable hard drive is not attached as rst in a multi-hard drive
conguration.
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 Storage > Boot Order
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 Security > Device
Security.
Boot order is not correct. Run the Computer Setup utility and change boot sequence in
Storage > Boot Order.
Hard Drive's “Emulation Type” is set to “None.” (some models) Run the Computer Setup utility and change the “Emulation Type”
to “Hard Disk” in the device's details under Storage > Device
Conguration.
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 89 to determine possible
causes for the blinking red and beep codes.
See the Worldwide Limited Warranty for terms and conditions.
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 hard drive problems 67
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.
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 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
68 Chapter 6 Troubleshooting without diagnostics
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 dierent monitor.
The cable connections are not correct. Check the cable connection from the monitor to the computer and
to the electrical outlet.
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).
Reash 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 dierent 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.
Solving display problems 69
Blank screen (no video).
Cause Solution
To access Control Panel in Windows 7, click Start, 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.
2. Expand the Resolution box, and then use the sliding control
to reset the resolution.
Monitor is congured 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.
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.
70 Chapter 6 Troubleshooting without diagnostics
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.
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.
Solving display problems 71
“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 eect.
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 10:
1. Log into the computer using an Administrator account.
2. Type msconfig in the taskbar search box, and then select
mscong 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 eects; 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
72 Chapter 6 Troubleshooting without diagnostics
Fuzzy focus; streaking, ghosting, or shadowing eects; 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
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.
In Windows 7, click Start, select All Programs, select Accessories,
select System Tools, and then select Character Map.
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.
Audio is hidden in Computer Setup. Enable the audio in Computer Setup: Security > Device Security >
System Audio.
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.
Solving audio problems 73
Sound does not come out of the speaker or headphones.
Cause Solution
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 >
Device Options > Internal Speaker.
The application is set to use a dierent 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 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 dierent 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 mued.
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 recongured in the audio driver or application
software.
In the audio driver or application software, recongure the jack or
set the jack to its default value.
74 Chapter 6 Troubleshooting without diagnostics
There is no sound or sound volume is too low.
Cause Solution
The application is set to use a dierent 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 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 dierent 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.
Solving printer problems 75
Printer prints garbled information.
Cause Solution
The correct printer driver for the application is not installed. Install the correct printer driver for the application.
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 rell 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.
76 Chapter 6 Troubleshooting without diagnostics
Cursor will not move using the arrow keys on the keypad.
Cause Solution
The Num Lock key is on. Press the Num Lock key. The Num Lock light should be o if you
want to use the arrow keys on the keypad. You can disable or
enable the Num Lock key in Computer Setup at Advanced >
Device Options.
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:
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 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 77
Solving hardware installation problems
You may need to recongure 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
congures the computer. If you install a non-plug and play device, you must recongure 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 conguration,
you did not accept them.
Reboot the computer and follow the instructions for accepting the
changes.
A plug and play board may not automatically congure when
added if the default conguration conicts with other devices.
Use Windows Device Manager to deselect the automatic settings
for the board and choose a basic conguration that does not
cause a resource conict. You can also use Computer Setup to
recongure or disable devices to resolve the resource conict.
To access Device Manager in Windows 7, click Start, select Control
Panel, 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 Security > USB
Security.
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.
NOTE: DIMM1 or XMM1 must always be installed. DIMM1
must be installed before DIMM2, and DIMM3 must be
installed before DIMM4.
78 Chapter 6 Troubleshooting without diagnostics
Computer will not start.
Cause Solution
2. Observe the beeps and LED lights on the front of the
computer. Beeps and ashing LEDs are codes for specic
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.
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 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.
Solving network problems 79
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 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 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.
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.
Network controller interrupt is shared with an expansion board. Under the Computer Setup Advanced menu, change the resource
settings for the board.
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 conguration.
Make sure the network drivers are loaded and that the driver
parameters match the conguration of the network controller.
80 Chapter 6 Troubleshooting without diagnostics
Diagnostics passes, but the computer does not communicate with the network.
Cause Solution
Make sure the correct network client and protocol is installed.
The network controller is not congured for this computer. Select the Network and Sharing Center icon in the Control Panel
and congure the network controller.
To access Control Panel in Windows 7, click Start, 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
Network controller interrupt is shared with an expansion board. Under the Computer Setup Advanced menu, change the resource
settings for the board.
The network controller requires drivers. Verify that the drivers were not accidentally deleted when the
drivers for a new expansion board were installed.
The expansion board installed is a network card (NIC) and conicts
with the embedded NIC.
Under the Computer Setup Advanced menu, change the resource
settings for the board.
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.
If necessary, download the softpaq from the web (from a dierent
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.
New network card will not boot.
Cause Solution
New network card may be defective or may not meet industry-
standard specications.
Install a working, industry-standard NIC, or change the boot
sequence to boot from another source.
Solving network problems 81
Cannot connect to network server when attempting Remote System Installation.
Cause Solution
The network controller is not congured 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 aected by congurations 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.
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.
82 Chapter 6 Troubleshooting without diagnostics
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.
Insucient 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 Security > Device Security.
Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable
media in Storage > Storage Options. Ensure CD-ROM is enabled
in Storage > Boot Order.
Network Boot is enabled in Computer Setup. Run the Computer Setup utility and disable Network Boot in
Security > Network Boot.
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
Storage > Boot Order.
Solving CD-ROM and DVD problems 83
Drive not found (identied).
Cause Solution
Cable could be loose. Check cable connections.
The system may not have automatically recognized a newly
installed device.
See reconguration directions in the Solving hardware installation
problems on page 78 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 Security > Device Security.
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 congured. 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 dierent 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.
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 dierent media to conrm whether media is valid.
84 Chapter 6 Troubleshooting without diagnostics
CD-ROM, CD-RW, DVD-ROM, or DVD-R/RW drive cannot read a disc or takes too long to start.
Cause Solution
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 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 dicult 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 dierent brand of media. Quality varies widely
between manufacturers.
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 (identied).
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
Security > USB Security.
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
Solving USB ash drive problems 85
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
Storage > Boot Order.
Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable
media in Storage > Storage 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 dierent ash drive.
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.
86 Chapter 6 Troubleshooting without diagnostics
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 congured 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 specic
information that the Web server can later retrieve.)
Windows 7:
1. Select Start > Control Panel.
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.
Solving Internet access problems 87
Solving software problems
Most software problems occur as a result of the following:
●The application was not installed or congured correctly.
●There is insucient memory available to run the application.
●There is a conict 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 89 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-certied for your version of
Windows.
Verify that the software is certied by Microsoft for your version
of Windows (see program packaging for this information).
Conguration les are corrupt. If possible, save all data, close all programs, and restart the
computer.
88 Chapter 6 Troubleshooting without diagnostics
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, recongure 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 51.
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 96.)
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 96.)
2. Remove expansion boards.
3. Replace the system board.
005-Real-Time Clock Power Loss Invalid time or date in conguration memory. Reset the date and time under Control Panel
(Computer Setup can also be used). If the
POST numeric codes and text messages 89
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 conguration was recently
changed, unplug the computer, restore
the original memory conguration, and
reboot the computer.
4. If the error 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.
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 conguration was recently
changed, unplug the power cord, restore
the original memory conguration, 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 conguration was recently
changed, unplug the power cord, restore
the original memory conguration, 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 conguration was recently
changed, unplug the power cord, restore
the original memory conguration, and
reboot the computer.
90 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes
Control panel message Description Recommended action
4. If the error persists, replace the system
board.
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.
2E1-MemorySize Error Memory amount has changed since the last
boot (memory added or removed).
The system memory size is dierent 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 conguration failed during
boot up.
1. Ensure memory modules are correctly
installed.
2. Verify proper memory module type.
3. Remove and replace the identied 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 identied
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 Conguration Warning The current memory conguration 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 Congured 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–Conguration Change Warning The storage device conguration 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.)
POST numeric codes and text messages 91
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 96.)
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 96.)
3. Replace the hard disk drive.
400-Serial Port A Address Conict 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 96.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
401-Serial Port B Address Conict 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 96.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
402-Serial Port C Address Conict 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 96.)
3. Recongure card resources and/or run
Computer Setup or Windows utilities.
403-Serial Port D Address Conict 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 96.)
92 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes
Control panel message Description Recommended action
3. Recongure 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 congured 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.
60x-HP Battery Alert The system has detected the storage capacity
of the battery stated below to be very low.
For optimal performance, replace the battery.
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.
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.
POST numeric codes and text messages 93
Control panel message Description Recommended action
910–Filter Warning Airow lter is dirty. Replace the airow lter.
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
specications. The machine should return to
normal operation once the situation is resolved.
Make sure system has proper airow.
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.
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, specic 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 specic 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
94 Chapter 7 POST error messages and diagnostic front panel LEDs and audible codes
Number of long beeps/blinks Error category
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.
Interpreting system validation diagnostic front panel LEDs and audible codes 95
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: setup password and power-on password. When you establish only a setup 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 setup password will give you access to Computer
Setup.
When both passwords are set, the setup 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 the password for the computer, you can clear that password so you can gain access to the
information on the computer by resetting the password jumper.
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 51 for information on backing up the CMOS
settings.
Resetting the password jumper
CAUTION: If you enable the stringent security feature in Computer Setup and you forget the setup password
or the power-on password, the computer is inaccessible and can no longer be used.
Enabling the stringent password disables the ability to reset the password by moving the jumper on the
system board.
If you lose or forget the password, the system board must be replaced. This scenario is not covered under
warranty.
To prevent the computer from becoming permanently unusable, record your congured setup password or
power-on password in a safe place away from your computer. Without these passwords, the computer cannot
be unlocked.
To disable the power-on or setup password features, or to clear the power-on or setup passwords, complete
the following steps:
96 Chapter 8 Password security and resetting CMOS
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 briey 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 identied. For assistance locating the
password jumper and other system board components, see the system board components image at
System board callouts – HP 285 G2 Microtower models on page 50.
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.
Changing a Setup or Power-On password
To change the power-on or setup password, complete the following steps:
1. Turn on or restart the computer.
To change the Setup password, go to step 2.
To change the Power-on password, go to step 3.
2. To change the Setup password, as soon as the computer turns on:
- Press the Esc key while “Press the ESC key for Startup Menu” message is displayed.
- Press the F10 key to enter Computer Setup.
Changing a Setup or Power-On password 97
3. When the key icon appears, type your current password, a slash (/) or alternate delimiter character, your
new password, another slash (/) or alternate delimiter character, and your new password again as
shown:
current password/new password/new password
NOTE: Type the new password carefully since the characters do not appear on the screen.
4. Press Enter.
The new password will take eect the next time the computer is restarted.
Deleting a Setup or Power-On password
To delete the power-on or setup password, complete the following steps:
1. Turn on or restart the computer.
To delete the Setup password, go to step 2.
To delete the Power-on password, go to step 3.
2. To delete the Setup password, as soon as the computer turns on:
- Press the Esc key while “Press the ESC key for Startup Menu” message is displayed.
- Press the F10 key to enter Computer Setup.
3. When the key icon appears, type your current password, a slash (/) or alternate delimiter character, your
new password, another slash (/) or alternate delimiter character, and your new password again as
shown:
current password/
4. Press Enter.
98 Chapter 8 Password security and resetting CMOS
9 Using HP PC Hardware Diagnostics (UEFI)
HP PC Hardware Diagnostics is a Unied 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 code is generated. This ID code can then be provided to support to help determine how to correct
the problem.
NOTE: To start diagnostics on a convertible computer, your computer must be in notebook mode and you
must use the keyboard attached.
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 99.
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 oered.
There are two options to download HP PC Hardware Diagnostics to a 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, select the Download link, and then select Run.
Download any version of UEFI for a specic product
1. Go to http://www.hp.com/support.
2. Select Get software and drivers.
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device 99
3. Enter the product name or number.
– or –
Select Identify now to let HP automatically detect your product.
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.
100 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 101. 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 103.
●Use Windows tools to create system restore points and create backups of personal information.
For more information, see Using Windows tools on page 102.
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 102.
●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 congures
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 10 101
◦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 103.
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 oers several options for restoring from backup, refreshing the computer, and resetting the
computer to its original state. For more information see Help and Support.
102 Chapter 10 System backup and recovery
▲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 103. If you have not already
created recovery media, see Creating HP Recovery media (select products only) on page 101.
●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 103.
●On select products, if you want to remove the recovery partition to reclaim hard drive space, HP
Recovery Manager oers the Remove Recovery Partition option.
For more information, see Removing the HP Recovery partition (select products only) on page 104.
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 101.
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.
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 101.
●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 101.
●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.
Backing up, restoring, and recovering in Windows 10 103
●System Recovery—Reinstalls the original operating system, and then congures 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 104.
3. Follow the on-screen instructions.
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.
104 Chapter 10 System backup and recovery
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 101.
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 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.
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 105.
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 specic 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 specic
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 107.
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:
Backing up, restoring, and recovering in Windows 7 105
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 106.
●If Productivity and Tools is listed, continue with the steps in Creating recovery discs with HP
Recovery Disc Creator (select models only) on page 107.
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.
●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 specic 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.
106 Chapter 10 System backup and recovery
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 oers 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 specic drivers and applications only, in the same way that the HP
Software Setup utility installs drivers and applications.
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:
Backing up, restoring, and recovering in Windows 7 107
●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.
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 108.
You must choose one of the following methods to perform a System Recovery:
108 Chapter 10 System backup and 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 109 or System Recovery when Windows is not responding on page 109.
●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 110.
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 105.
If the computer is working and Windows 7 is responding, use these steps to perform a System Recovery:
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 109.
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.
Backing up, restoring, and recovering in Windows 7 109
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 106. 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 110.
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:
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.
or
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 106. use the steps in System Recovery using recovery media
(select models only) on page 110.
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.
110 Chapter 10 System backup and recovery
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.
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.
Backing up, restoring, and recovering in Windows 7 111
A Battery replacement
The battery installed on the computer provides power to the real-time clock. When replacing the battery, use
a battery equivalent to the battery originally installed on the computer. The computer has a 3-volt lithium
coin cell battery installed.
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 briey 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. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as compact discs or USB ash drives, from the computer.
3. Turn o the computer properly through the operating system, then turn o any external devices.
4. Disconnect the power cord from the power outlet and disconnect any external devices.
CAUTION: 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. You must disconnect the power cord to avoid damage to
the internal components of the computer.
5. Remove the computer access panel.
6. Locate the battery and battery holder on the system board.
NOTE: On some computer models, it may be necessary to remove an internal component to gain
access to the battery.
7. Depending on the type of battery holder on the system board, complete the following instructions to
replace the battery.
Type 1
a. Lift the battery out of its holder.
112 Appendix A Battery replacement
b. Slide the replacement battery into position, positive side up. The battery holder automatically
secures the battery in the proper position.
Type 2
a. To release the battery from its holder, squeeze the metal clamp that extends above one edge of
the battery. When the battery pops up, lift it out (1).
b. To insert the new battery, slide one edge of the replacement battery under the lip of the holder
with the positive side up. Push the other edge down until the clamp snaps over the other edge of
the battery (2).
Type 3
a. Pull back on the clip (1) that is holding the battery in place, and remove the battery (2).
113
b. Insert the new battery and position the clip back into place.
NOTE: After the battery has been replaced, use the following steps to complete this procedure.
8. Replace the computer access panel.
9. Plug in the computer and turn on power to the computer.
10. Reset the date and time, your passwords, and any special system setups using Computer Setup.
11. Lock any security devices that were disengaged when the computer access panel was removed.
114 Appendix A Battery replacement
B 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 115
Country-Specic Requirements
Additional requirements specic 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
UL
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 certication 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) conguration.
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) conguration.
116 Appendix B Power Cord Set Requirements
C Statement of Volatility
HP conrms that business desktop systems contain DDR3 or DDR4 volatile memory (memory amount
depends on the customer conguration). In addition, the motherboard in the condition originally shipped
without subsequent modication or the addition or installation of any applications, features, or functionality,
contain the following nonvolatile memory: Real Time Clock battery backed-up conguration memory (256
Bytes), DIMM Serial Presence Detect (SPD) conguration data (256 Bytes per module, 128 Bytes
programmable), Serial Peripheral Interface (SPI) ROM for System BIOS (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.
The following procedure shows the steps that should be taken 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.
Flashing the BIOS will reset it back to factory settings.
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 > System Security from the main menu. If the Embedded Security Device Support
option is set to “Disable”, skip to step 7.
5. To erase all security keys from the TPM:
Under Embedded Security Device in the System Security menu, congure Reset to Factory Settings to
Reset.
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.
6. Press F10 to accept changes.
7. To clear the secure boot key database:
a. Enter the F10 setup utility.
b. Go to the Security menu.
c. Select Secure Boot Conguration.
d. In the Key Management section, select clear Secure boot keys.
e. Use space key to select clear.
f. Press the F10 key to accept changes.
g. From the main menu select File > Save Changes and Exit.
8. If the Ownership Tag or Asset Tag is set, manually clear it under Security > System Ids.
9. Select File > Save Changes and Exit.
10. To clear the Setup or Power-On passwords if set, and clear any other settings, power down the computer
and remove the AC power cord and the computer hood.
117
11. Locate the two pin password jumper labeled CLR_PSWD and remove it.
12. Remove the AC power, wait 10 seconds until the unit AC power has drained out.
13. Replace the hood and AC power cord and turn the computer on. The passwords are now cleared and all
other user-congurable, non-volatile memory settings are reset to their factory default values.
14. Enter the F10 setup utility.
15. Select File > Default Setup > Restore Factory Settings as Default. This will set the default settings
back to the factory defaults.
16. Select File > Apply Defaults and Exit.
17. Shut down the computer, remove the AC power cord and place the (blue/green) jumper back on header
E49. Replace the computer hood and power cord.
If Computrace is enabled on the computer, see the service provider for instruction to disable the feature.
118 Appendix C Statement of Volatility
DSpecications
MT Specications
Table D-1 Specications
Chassis
Height
Width
Depth
14.13 in
6.69 in
13.98 in
35.88 cm
17.00 cm
35.50 cm
Approximate Weight 13.47 lb 6.11 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
10,000 ft
30,000 ft
3048 m
9144 m
Power Supply
Operating Voltage Range
Rated Voltage Range1
Rated Line Frequency
Operating Line Frequency
90-264 VAC
100-240 VAC
50-60 Hz
47-63 Hz
Output 180W active PFC
300W active PFC
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 benet of not requiring an
input voltage range select switch.
MT Specications 119
Index
A
access panel
illustrated 4
locked 62
removal 18
audible codes 94
audio problems 73
B
backup and recovery, Windows 7
105
Backup and Restore, Windows 7
108
backups
creating Windows 7 105, 107
battery
disposal 14
battery replacement 112
beep codes 94
booting options
Full Boot 89
Quick Boot 89
C
cable management 16
cable pinouts, SATA data 15
cautions
AC power 9
cables 14
cooling fan 13
electrostatic discharge 9
keyboard cleaning 12
keyboard keys 13
CD-ROM or DVD problems 83
changing a Power-On password 97
changing a Setup password 97
clamp lock
illustrated 7
cleaning
computer 12
mouse 13
safety precautions 12
CMOS
backing up 96
computer cleaning 12
Computer Setup
access problem 61
country power cord set
requirements 116
Customer Support 59
D
deleting a Power-On password 98
deleting a Setup password 98
DIMM
specications 22
DIMMs. See memory
disassembly preparation 17
Driver Recovery DVD,
creating 107
using for restore 110
drives
cable connections 28
installation 28
locations 29
drives spare parts 8
E
electrostatic discharge (ESD) 9
preventing damage 10
error
codes 89, 94
messages 89
expansion card
installation 25
removal 25
F
F10 Setup
access problem 61
fan
illustrated 7
fan sink
illustrated 5
fan, power supply 13
ash drive problems 85
ashing LEDs 94
front bezel
blank removal 21
illustrated 4
MT removal 19
security 20
front I/O assembly
illustrated 7
front panel components 2
front panel problems 86
front USB panel
removal and replacement 37
G
general problems 61
grounding methods 10
H
hard drive
installation 34
proper handling 14
removal 33
SATA characteristics 15
hard drive conversion bracket
illustrated 7
hard drive problems 66
hard drive recovery
Windows 7 108
hard drives
sizes 8, 28
hardware installation problems 78
heat sink
removal and replacement 44
Help and Support
Windows 7 105
helpful hints 60
HP PC Hardware Diagnostics (UEFI)
using 99
HP Recovery Disc Creator, using 107
I
installing
battery 112
drive cables 28
expansion card 25
hard drive 34
memory 22
optical drive 31
Internet access problems 87
120 Index
K
keyboard
cleaning 12
keyboard problems 76
L
locks
front bezel 20
M
major component spare parts 4
media card reader
problems 68
memory
DIMMs specications 22
installation 22
maximum 22
problems 82
slots 22
socket population 22
specications 22
memory modules
illustrated 5, 22
miscellaneous boards 8
miscellaneous spare parts 6
monitor problems 69
mouse
cleaning 13
problems 76
MT
heat sink removal and
replacement 44
N
network problems 79
numeric error codes 89
O
operating guidelines 11
optical drive
installation 31
options 8, 28
problems 83
removal 30
overheating, prevention 11
P
password
clearing 96
power-on 96
setup 96
passwords 97, 98
POST error messages 89
power adapter for optical drive
illustrated 7
power cord set requirements
country specic 116
power problems 65
power supply
fan 13
illustrated 4
operating voltage range 119
removal and replacement 41
Power-On password 97, 98
power-on password 96
printer port
illustrated 7
printer problems 75
problems
audio 73
CD-ROM or DVD 83
Computer Setup 61
F10 Setup 61
ash drive 85
front panel 86
general 61
hard drive 66
hardware installation 78
Internet access 87
keyboard 76
Media Card Reader 68
memory 82
monitor 69
mouse 76
network 79
power 65
printer 75
software 88
processor
removal and replacement 45, 46
product ID location 3
R
rear chassis fan
removal and replacement 40
rear panel components 3
recovery discs, steps for creating
Windows 7 106
recovery discs, using for restore
110
recovery media, creating 107
recovery media, creating Windows
7 105
recovery USB ash drive, steps for
creating Windows 7 106
removal and replacement
front USB panel 37
heat sink 44
power supply 41
processor 45, 46
rear chassis fan 40
speaker 39
system board 47
removing
access panel 18
battery 112
bezel blank 21
expansion card 25
front bezel 19
hard drive 33
optical drive 30
resetting
CMOS 96
password jumper 96
S
safety and comfort 59
safety precautions
cleaning 12
SATA
connectors on system board 15
data cable pinouts 15
hard drive characteristics 15
SATA data cable
illustrated 7
screws, correct size 14
Secure Digital (SD) card reader
illustrated 7
security
front bezel 20
serial number location 3
serial port with cable
illustrated 7
service considerations 13
Setup password 97, 98
setup password 96
software
problems 88
servicing computer 13
solid-state drives
sizes 8, 28
Index 121
speaker
illustrated 7
removal and replacement 39
specications
computer 119
specications, memory 22
static electricity 9
system board
illustrated 5
removal and replacement 47
SATA connectors 15
System Recovery using Windows 7
recovery media 110
System Recovery, Windows 7 108
system restore points, creating
Windows 7 105
System Restore, Windows 7 108
T
tamper-proof screws
tool 13
temperature control 11
tools, servicing 13
Torx T15 screwdriver 13
V
ventilation, proper 11
W
Windows 10
backup and restore 101
Windows 7
backing up information 107
backup and recovery 105
Backup and Restore 108
creating backups 105
creating recovery media 105
creating system restore points
105
hard drive recovery 108
Help and Support 105
steps for creating recovery
discs 106
steps for creating recovery
media 106
steps for creating recovery USB
ash drive 106
System Recovery 108
System Recovery using recovery
media 110
System Restore 108
Windows 7 operating system discs
using for restore 110
Windows 7 operating system DVD
creating 107
using for restore 110
Windows 7 operating system media
creating 107
122 Index