OptiPlex 7090 Tower Service Manual
Contents
Working inside your computer
- Safety instructions
Removing and installing components
Software
- Drivers and downloads
System setup
Troubleshooting
Getting help and contacting Dell

DELL 7090 User Manual

Displayed below is the user manual for 7090 by DELL which is a product in the PCs/Workstations category. This manual has pages.

Related Manuals

DELL 7090 Manual

OptiPlex 7090 Tower

Service Manual

Regulatory Model: D28M

Regulatory Type: D28M005

May 2021

Rev. A00

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid

the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

trademarks may be trademarks of their respective owners.

Chapter 1: Working inside your computer...................................................................................... 6

Safety instructions.............................................................................................................................................................. 6

Before working inside your computer.......................................................................................................................6

Safety precautions.........................................................................................................................................................7

Electrostatic discharge—ESD protection................................................................................................................7

ESD field service kit ..................................................................................................................................................... 8

Transporting sensitive components.......................................................................................................................... 9

After working inside your computer..........................................................................................................................9

Chapter 2: Removing and installing components.......................................................................... 10

Recommended tools..........................................................................................................................................................10

Screw List............................................................................................................................................................................ 10

Major components of your system................................................................................................................................. 11

Side cover............................................................................................................................................................................ 12

Removing the side cover............................................................................................................................................ 12

Installing the side cover.............................................................................................................................................. 13

Front bezel ......................................................................................................................................................................... 15

Installing the front bezel.............................................................................................................................................15

Removing the front bezel...........................................................................................................................................15

Hard-drive assembly..........................................................................................................................................................16

Removing the primary 2.5-inch hard-drive assembly..........................................................................................16

Removing the secondary 2.5-inch hard-disk drive assembly............................................................................ 17

Removing the 2.5-inch hard-disk drive bracket................................................................................................... 18

Installing the 2.5-inch hard-disk drive bracket..................................................................................................... 19

Installing the secondary 2.5-inch hard-disk drive assembly..............................................................................20

Installing the primary 2.5-inch hard-drive assembly............................................................................................ 21

3.5 in. hard-drive assembly............................................................................................................................................. 22

Removing the 3.5-inch hard-disk drive assembly................................................................................................22

Removing the 3.5-inch hard-disk drive bracket...................................................................................................23

Installing the 3.5-inch hard-disk drive bracket.....................................................................................................24

Installing the 3.5-inch hard-disk drive assembly..................................................................................................25

Solid-state drive.................................................................................................................................................................27

Installing the M.2 2230 PCIe solid-state drive..................................................................................................... 27

Removing the M.2 2280 PCIe solid-state drive................................................................................................... 27

Installing the M.2 2280 PCIe solid-state drive..................................................................................................... 29

Removing the M.2 2230 PCIe solid-state drive................................................................................................... 30

Memory module.................................................................................................................................................................. 31

Removing the memory module................................................................................................................................. 31

Installing the memory module....................................................................................................................................31

Processor fan and heat-sink assembly.........................................................................................................................32

Removing the processor fan and 125 W heat-sink assembly........................................................................... 32

Removing the processor fan.....................................................................................................................................33

Installing the processor fan.......................................................................................................................................34

Installing the processor fan and 125 W heat-sink assembly............................................................................. 35

Contents

Contents 3

Removing the processor fan and 65 W heat-sink assembly.............................................................................36

Installing the processor fan and 65 W heat-sink assembly............................................................................... 37

Processor............................................................................................................................................................................ 38

Removing the processor............................................................................................................................................38

Installing the processor.............................................................................................................................................. 39

Graphics card...................................................................................................................................................................... 41

Removing the graphics card...................................................................................................................................... 41

Installing the graphics card....................................................................................................................................... 42

Graphical processing unit................................................................................................................................................ 43

Removing the powered GPU.................................................................................................................................... 43

Installing the powered GPU...................................................................................................................................... 44

Coin-cell battery................................................................................................................................................................ 46

Removing the coin-cell battery................................................................................................................................46

Installing the coin-cell battery.................................................................................................................................. 47

WLAN card.......................................................................................................................................................................... 47

Removing the WLAN card......................................................................................................................................... 47

Installing the WLAN card........................................................................................................................................... 48

Slim optical-drive...............................................................................................................................................................50

Removing the Slim optical drive.............................................................................................................................. 50

Installing the Slim optical drive................................................................................................................................. 51

Slim optical-drive bracket............................................................................................................................................... 52

Removing the slim-ODD bracket............................................................................................................................. 52

Installing the slim-ODD bracket............................................................................................................................... 52

Chassis fan..........................................................................................................................................................................53

Removing the chassis fan......................................................................................................................................... 53

Installing the chassis fan............................................................................................................................................54

Voltage regulator heat sink.............................................................................................................................................55

Removing the VR heat sink.......................................................................................................................................55

Installing the VR heat sink.........................................................................................................................................56

Speaker................................................................................................................................................................................ 57

Removing the speaker................................................................................................................................................57

Installing the speaker..................................................................................................................................................58

Power button..................................................................................................................................................................... 59

Removing the power button.....................................................................................................................................59

Installing the power button....................................................................................................................................... 60

Power-supply unit.............................................................................................................................................................. 61

Removing the power-supply unit............................................................................................................................. 61

Installing the power-supply unit...............................................................................................................................63

Removing the power-supply unit (For systems with powered GPU).............................................................65

Installing the power-supply unit (For systems with powered GPU)...............................................................68

Intrusion switch.................................................................................................................................................................. 71

Removing the intrusion switch..................................................................................................................................71

Installing the intrusion switch................................................................................................................................... 72

Optional I/O modules (Type C/ HDMI/VGA/DP/Serial).........................................................................................72

Removing optional I/O modules (Type-C/HDMI/VGA/DP/Serial).................................................................72

Installing optional I/O modules (Type-C/HDMI/VGA/DP/Serial)...................................................................73

System board......................................................................................................................................................................74

Removing the system board..................................................................................................................................... 74

Installing the system board....................................................................................................................................... 79

4Contents

Chapter 3: Software.................................................................................................................... 84

Drivers and downloads..................................................................................................................................................... 84

Chapter 4: System setup.............................................................................................................85

Boot menu...........................................................................................................................................................................85

Navigation keys..................................................................................................................................................................85

Boot Sequence...................................................................................................................................................................86

System setup options.......................................................................................................................................................86

Updating the BIOS in Windows .................................................................................................................................... 95

Updating BIOS on systems with BitLocker enabled........................................................................................... 95

Updating your system BIOS using a USB flash drive..........................................................................................96

System and setup password...........................................................................................................................................96

Assigning a system setup password....................................................................................................................... 97

Deleting or changing an existing system setup password................................................................................. 97

Chapter 5: Troubleshooting.........................................................................................................98

Dell SupportAssist Pre-boot System Performance Check diagnostics................................................................98

Running the SupportAssist Pre-Boot System Performance Check................................................................98

Diagnostic LED behavior..................................................................................................................................................98

Diagnostic error messages............................................................................................................................................ 100

System error messages..................................................................................................................................................103

WiFi power cycle..............................................................................................................................................................103

Chapter 6: Getting help and contacting Dell...............................................................................104

Contents 5

Working inside your computer

Safety instructions

Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless

otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped

with your computer.

WARNING: Before working inside your computer, read the safety information that is shipped with your

computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/

regulatory_compliance.

WARNING: Disconnect your computer from all power sources before opening the computer cover or panels.

After you finish working inside the computer, replace all covers, panels, and screws before connecting your

computer to an electrical outlet.

CAUTION: To avoid damaging the computer, ensure that the work surface is flat, dry, and clean.

CAUTION: To avoid damaging the components and cards, handle them by their edges, and avoid touching the

pins and the contacts.

CAUTION: You should only perform troubleshooting and repairs as authorized or directed by the Dell technical

assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the

safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance.

CAUTION: Before touching anything inside your computer, ground yourself by touching an unpainted metal

surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal

surface to dissipate static electricity which could harm internal components.

CAUTION: When you disconnect a cable, pull it by its connector or its pull tab, not the cable itself. Some cables

have connectors with locking tabs or thumbscrews that you must disengage before disconnecting the cable.

When disconnecting cables, keep them evenly aligned to avoid bending the connector pins. When connecting

cables, ensure that the ports and the connectors are correctly oriented and aligned.

CAUTION: Press and eject any installed card from the media-card reader.

NOTE: The color of your computer and certain components may appear differently than shown in this document.

Before working inside your computer

About this task

NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Steps

1. Save and close all open files and exit all open applications.

2. Shut down your computer. Click Start > Power > Shut down.

NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down

instructions.

6 Working inside your computer

3. Disconnect your computer and all attached devices from their electrical outlets.

4. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.

CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the

cable from the network device.

5. Remove any media card and optical disc from your computer, if applicable.

Safety precautions

The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.

Observe the following safety precautions before you perform any installation or break/fix procedures involving disassembly or

reassembly:

●Turn off the system and all attached peripherals.

●Disconnect the system and all attached peripherals from AC power.

●Disconnect all network cables, telephone, and telecommunications lines from the system.

●Use an ESD field service kit when working inside any desktop to avoid electrostatic discharge (ESD) damage.

●After removing any system component, carefully place the removed component on an anti-static mat.

●Wear shoes with non-conductive rubber soles to reduce the chance of getting electrocuted.

Standby power

Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are

essentially powered while turned off. The internal power enables the system to be remotely turned on (wake on LAN) and

suspended into a sleep mode and has other advanced power management features.

Unplugging, pressing and holding the power button for 20 seconds should discharge residual power in the system board.

Bonding

Bonding is a method for connecting two or more grounding conductors to the same electrical potential. This is done through

the use of a field service electrostatic discharge (ESD) kit. When connecting a bonding wire, ensure that it is connected to bare

metal and never to a painted or non-metal surface. The wrist strap should be secure and in full contact with your skin, and

ensure that you remove all jewelry such as watches, bracelets, or rings prior to bonding yourself and the equipment.

Electrostatic discharge—ESD protection

ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards,

processors, memory DIMMs, and system boards. Very slight charges can damage circuits in ways that may not be obvious, such

as intermittent problems or a shortened product life span. As the industry pushes for lower power requirements and increased

density, ESD protection is an increasing concern.

Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than

in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.

Two recognized types of ESD damage are catastrophic and intermittent failures.

●Catastrophic – Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes

an immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has

received a static shock and immediately generates a "No POST/No Video" symptom with a beep code emitted for missing or

nonfunctional memory.

●Intermittent – Intermittent failures represent approximately 80 percent of ESD-related failures. The high rate of

intermittent failures means that most of the time when damage occurs, it is not immediately recognizable. The DIMM

receives a static shock, but the tracing is merely weakened and does not immediately produce outward symptoms related to

the damage. The weakened trace may take weeks or months to melt, and in the meantime may cause degradation of memory

integrity, intermittent memory errors, etc.

The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or "walking wounded")

failure.

Perform the following steps to prevent ESD damage:

Working inside your computer 7

●Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not

provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts

with increased sensitivity to ESD damage.

●Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads.

●When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti-static

packing material until you are ready to install the component. Before unwrapping the anti-static packaging, ensure that you

discharge static electricity from your body.

●Before transporting a static-sensitive component, place it in an anti-static container or packaging.

ESD field service kit

The unmonitored Field Service kit is the most commonly used service kit. Each Field Service kit includes three main components:

anti-static mat, wrist strap, and bonding wire.

Components of an ESD field service kit

The components of an ESD field service kit are:

●Anti-Static Mat – The anti-static mat is dissipative and parts can be placed on it during service procedures. When using an

anti-static mat, your wrist strap should be snug and the bonding wire should be connected to the mat and to any bare metal

on the system being worked on. Once deployed properly, service parts can be removed from the ESD bag and placed directly

on the mat. ESD-sensitive items are safe in your hand, on the ESD mat, in the system, or inside a bag.

●Wrist Strap and Bonding Wire – The wrist strap and bonding wire can be either directly connected between your wrist

and bare metal on the hardware if the ESD mat is not required, or connected to the anti-static mat to protect hardware that

is temporarily placed on the mat. The physical connection of the wrist strap and bonding wire between your skin, the ESD

mat, and the hardware is known as bonding. Use only Field Service kits with a wrist strap, mat, and bonding wire. Never

use wireless wrist straps. Always be aware that the internal wires of a wrist strap are prone to damage from normal wear

and tear, and must be checked regularly with a wrist strap tester in order to avoid accidental ESD hardware damage. It is

recommended to test the wrist strap and bonding wire at least once per week.

●ESD Wrist Strap Tester – The wires inside of an ESD strap are prone to damage over time. When using an unmonitored

kit, it is a best practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A

wrist strap tester is the best method for doing this test. If you do not have your own wrist strap tester, check with your

regional office to find out if they have one. To perform the test, plug the wrist-strap's bonding-wire into the tester while it is

strapped to your wrist and push the button to test. A green LED is lit if the test is successful; a red LED is lit and an alarm

sounds if the test fails.

●Insulator Elements – It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts

that are insulators and often highly charged.

●Working Environment – Before deploying the ESD Field Service kit, assess the situation at the customer location. For

example, deploying the kit for a server environment is different than for a desktop or portable environment. Servers are

typically installed in a rack within a data center; desktops or portables are typically placed on office desks or cubicles. Always

look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit with additional space to

accommodate the type of system that is being repaired. The workspace should also be free of insulators that can cause an

ESD event. On the work area, insulators such as Styrofoam and other plastics should always be moved at least 12 inches or

30 centimeters away from sensitive parts before physically handling any hardware components

●ESD Packaging – All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded

bags are preferred. However, you should always return the damaged part using the same ESD bag and packaging that the

new part arrived in. The ESD bag should be folded over and taped shut and all the same foam packing material should be

used in the original box that the new part arrived in. ESD-sensitive devices should be removed from packaging only at an

ESD-protected work surface, and parts should never be placed on top of the ESD bag because only the inside of the bag is

shielded. Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag.

●Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts

to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.

ESD protection summary

It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static

mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all

insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

8Working inside your computer

Transporting sensitive components

When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place

these parts in anti-static bags for safe transport.

After working inside your computer

About this task

CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.

Steps

1. Replace all screws and ensure that no stray screws remain inside your computer.

2. Connect any external devices, peripherals, or cables you removed before working on your computer.

3. Replace any media cards, discs, or any other parts that you removed before working on your computer.

4. Connect your computer and all attached devices to their electrical outlets.

5. Turn on your computer.

Working inside your computer 9

Removing and installing components

NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

Recommended tools

The procedures in this document require the following tools:

●Phillips #0 screwdriver

●Phillips #1 screwdriver

●Flat headed screwdriver

●Plastic scribe

Screw List

The following table shows the screw list and the images for different components.

NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and

then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is

restored when the component is replaced.

NOTE: Some computers have magnetic surfaces. Ensure that the screws are not left attached to such surface when

replacing a component.

NOTE: Screw color may vary with the configuration ordered.

Table 1. Screw list

Component Screw type Quantity Image

Side cover #6-32 2

M.2 2230/2280 Solid-state drive M2x3.5 1

WLAN card M2x3.5 1

Power supply unit / Power-supply unit with

powered GPU

#6-32 3

125 W heat-sink assembly #6-32 (Captive) 4

Processor fan #6-32 (Captive) 6

10 Removing and installing components

Table 1. Screw list (continued)

Component Screw type Quantity Image

Processor fan and 65 W heat-sink assembly #6-32 (Captive) 4

VR heat sink #6-32 (Captive) 2

System board #6-32

M2x4

Major components of your system

1. Side cover

2. 3.5-inch hard-drive assembly

3. Optical Disk Drive

Removing and installing components 11

4. Processor fan and heat-sink assembly

5. M.2 WLAN

6. Memory module

7. M.2 Solid-state drive

8. Power-button cable

9. System board

10. Front I/O bracket

11. Front bezel

12. Chassis

13. Chassis fan

14. Speaker

15. Intrusion switch

16. Power Supply Unit

17. 2.5-inch hard-disk drive assembly

NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These

parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for

purchase options.

Side cover

Removing the side cover

Prerequisites

1. Follow the procedure in before working inside your computer.

NOTE: Ensure that you remove the security cable from the security-cable slot (if applicable).

About this task

The following images indicate the location of the side cover and provide a visual representation of the removal procedure.

12 Removing and installing components

Steps

1. Slide the release latch to release the cover from the computer.

2. Slide the side cover towards the rear of the computer and lift the cover away from the computer.

Installing the side cover

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the side cover and provides a visual representation of the installation procedure.

Removing and installing components 13

Steps

1. Locate the side cover slot on your computer.

2. Align the tabs on the side cover with the slots on the chassis.

3. Slide the side cover towards the front of the computer to install it.

4. The release latch automatically locks the side cover to the computer.

Next steps

1. Follow the procedure in after working inside your computer.

14 Removing and installing components

Front bezel

Installing the front bezel

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the front bezel and provides a visual representation of the installation procedure.

Steps

1. Position the front bezel to align the tabs on the bezel with the slots on the chassis.

2. Press the bezel until the tabs clicks into place.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Removing the front bezel

Prerequisites

1. Follow the procedure in before working inside your computer.

Removing and installing components 15

2. Remove the side cover.

About this task

The following images indicate the location of the front bezel and provide a visual representation of the removal procedure.

Steps

1. Pry the retention tabs to release the front bezel from the computer.

2. Slightly pull the front bezel and gently rotate to release the other tabs on the bezel from the slots in the computer chassis.

3. Remove the front bezel from the computer.

Hard-drive assembly

Removing the primary 2.5-inch hard-drive assembly

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the 2.5-inch hard-drive assembly and provide a visual representation of the

removal procedure.

16 Removing and installing components

Steps

1. Disconnect the hard-drive data and power cables from the connectors on the 2.5-inch hard-drive module.

2. Press the release tabs on both the sides of the hard-drive bracket to release it from the slots on the computer chassis.

3. Lift the hard-drive assembly from the computer.

NOTE: Note the orientation of the hard drive so that you can replace it correctly.

Removing the secondary 2.5-inch hard-disk drive assembly

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the 2.5-inch hard-disk drive and provide a visual representation of the removal

procedure.

Removing and installing components 17

Steps

1. Disconnect the power cable and the black hard drive data cable from the connectors on the 2.5-inch hard-disk drive.

NOTE: For secondary 2.5-inch hard-disk drive, the other end of the black hard drive data cable is connected to the

SATA1 and SATA2 connectors on the system board.

2. Press the release tabs on the hard-disk drive bracket and slide the hard-disk drive assembly out of the hard-disk drive

bracket.

3. Lift the hard-disk drive assembly from the computer.

NOTE: The orientation of the hard-disk drive so that you can replace it correctly.

Removing the 2.5-inch hard-disk drive bracket

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the 2.5-inch primary hard-disk drive or 2.5-inch secondary hard-disk drive.

18 Removing and installing components

About this task

The following images indicate the location of the hard-disk drive bracket and provide a visual representation of the removal

procedure.

Steps

1. Pull one side of the hard-disk drive bracket to disengage the pins on the bracket from the slots on the drive.

2. Lift the hard-disk drive out of the bracket.

NOTE: The orientation or the SATA connector marking on the hard-disk drive so that you can replace it correctly.

Installing the 2.5-inch hard-disk drive bracket

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the 2.5-inch hard-disk drive bracket and provides a visual representation of the

installation procedure.

Removing and installing components 19

Steps

1. Align the hard-disk drive to the side of the hard-disk drive bracket.

2. Pull the other end of the hard-disk drive bracket to insert the pins on the bracket into the slot on the hard-disk drive.

3. Insert the hard-disk drive into the hard-disk drive bracket until it clicks into place.

Next steps

1. Install the 2.5-inch primary hard-disk drive or 2.5-inch secondary hard-disk drive.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Installing the secondary 2.5-inch hard-disk drive assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the 2.5-inch hard-disk drive assembly and provides a visual representation of the

installation procedure.

20 Removing and installing components

Steps

1. Insert the hard-disk drive assembly into the slot on the computer until it clicks into place.

2. For 2.5-inch hard-disk drive set as secondary, connect the black hard drive data cable and power cable to the connectors on

the 2.5-inch hard drive.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Installing the primary 2.5-inch hard-drive assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the 2.5-inch hard-drive assembly and provides a visual representation of the

installation procedure.

Removing and installing components 21

Steps

1. Insert the hard-drive assembly into the slot on the computer until it clicks into place.

2. Connect the hard-drive data and power cables to the connectors on the 2.5-inch hard-drive module.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

3.5 in. hard-drive assembly

Removing the 3.5-inch hard-disk drive assembly

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

22 Removing and installing components

About this task

The following images indicate the location of the 3.5-inch hard-disk drive assembly and provide a visual representation of the

removal procedure.

Steps

1. Disconnect the data and power cables from the 3.5-inch hard-disk drive module.

2. Push the securing tab to release the hard-disk drive assembly from the chassis.

3. Remove the EMI shied from the front side of the chassis.

4. Slide the hard-disk drive assembly away from the chassis.

Removing the 3.5-inch hard-disk drive bracket

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the 3.5-inch hard-disk drive assembly.

Removing and installing components 23

About this task

The following image indicates the location of the 3.5-inch hard-disk drive bracket and provides a visual representation of the

removal procedure.

Steps

1. Pry one side of the hard-disk drive bracket edge to release the tabs on the bracket from the slots on the hard-disk drive.

2. Lift and remove the hard-disk drive off the hard-disk drive bracket.

Installing the 3.5-inch hard-disk drive bracket

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the 3.5-inch hard-disk drive bracket and provides a visual representation of the

installation procedure.

24 Removing and installing components

Steps

1. Place the hard-disk drive into the hard-disk drive bracket and align the tabs on the bracket with the slots on the hard-disk

drive.

2. Snap the hard-disk drive into the hard-disk drive bracket.

Next steps

1. Install the 3.5-inch hard-disk drive assembly.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Installing the 3.5-inch hard-disk drive assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the 3.5-inch hard-disk drive assembly and provides a visual representation of the

installation procedure.

Removing and installing components 25

Steps

1. Slide and insert the 3.5-inch hard-disk drive assembly into the hard-disk drive slot.

2. Replace the EMI shield on the chassis.

3. Align the hard-disk drive assembly with the tabs on the chassis.

4. Route the power cable and the data cable through the routing guides on the hard-disk drive assembly and connect the

cables to the hard-disk drive.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

26 Removing and installing components

Solid-state drive

Installing the M.2 2230 PCIe solid-state drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the solid-state drive and provides a visual representation of the installation

procedure.

Steps

1. Align the notch on the solid-state drive with the tab on the solid-state drive connector.

2. Insert the solid-state drive at a 45-degree angle into the slot on the system board.

3. Replace the screw (M2x3.5) to secure the M.2 2230 solid-state drive to the system board.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Removing the M.2 2280 PCIe solid-state drive

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.

Removing and installing components 27

Steps

1. Remove the screw (M2x3.5) that secures the solid-state drive to the system board.

2. Slide and lift the solid-state drive off the system board.

NOTE: Repeat the above procedure for removing the other solid-state drive.

28 Removing and installing components

Installing the M.2 2280 PCIe solid-state drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the solid-state drive and provides a visual representation of the installation

procedure.

Removing and installing components 29

Steps

1. Align the notch on the solid-state drive with the tab on the solid-state drive connector.

2. Insert the solid-state drive at a 45-degree angle into the slot on the system board.

3. Replace the screw (M2x3.5) to secure the M.2 2280 solid-state drive to the system board.

NOTE: Repeat the above procedure for installing the other solid-state drive.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Removing the M.2 2230 PCIe solid-state drive

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.

Steps

1. Remove the screw (M2x3.5) that secures the solid-state drive to the system board.

2. Slide and lift the solid-state drive off the system board.

30 Removing and installing components

Memory module

Removing the memory module

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the memory module and provide a visual representation of the removal procedure.

Steps

1. Pull the securing clips from both side of the memory module until the memory module pops up.

2. Slide and remove the memory module from the memory-module slot.

Installing the memory module

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the memory module and provides a visual representation of the installation

procedure.

Removing and installing components 31

Steps

1. Align the notch on the memory module with the tab on the memory-module slot.

2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place.

NOTE: If you do not hear the click, remove the memory module and reinstall it.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Processor fan and heat-sink assembly

Removing the processor fan and 125 W heat-sink assembly

Prerequisites

1. Follow the procedure in before working inside your computer.

WARNING: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to

cool before you touch it.

CAUTION: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The

oils in your skin can reduce the heat transfer capability of the thermal grease.

2. Remove the side cover.

About this task

The following images indicate the location of the processor fan and 125 W heat-sink assembly and provide a visual

representation of the removal procedure.

32 Removing and installing components

Steps

1. Disconnect the processor-fan cable from the connector on the system board.

2. In the reverse sequential order (4->3->2->1), loosen the four captive screws that secure the processor fan and heat-sink

assembly to the system board.

3. Lift the processor fan and heat-sink assembly from the system board.

Removing the processor fan

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the processor fan and heat-sink assembly.

About this task

The following images indicate the location of the processor fan and provide a visual representation of the removal procedure.

Removing and installing components 33

Steps

1. Remove the six screws that secure the processor fan to the heat-sink assembly.

2. Lift the processor fan from the heat-sink.

3. Remove the two screws that secure the metal plate to the processor fan.

4. Lift the metal plate away from the processor fan.

Installing the processor fan

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the processor fan and provide a visual representation of the removal procedure.

34 Removing and installing components

Steps

1. Align and place the heat-sink metal plate above the processor fan and replace the two screws to secure the metal plate to

the processor fan.

2. Insert the processor fan into its slot in the heat-sink.

3. Replace the six screws to secure the processor fan to the heat-sink assembly.

Next steps

1. Install the processor fan and heat-sink assembly.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Installing the processor fan and 125 W heat-sink assembly

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

NOTE: If either the processor or the heat sink is replaced, use the thermal grease that is provided in the kit to ensure that

thermal conductivity is achieved.

Removing and installing components 35

About this task

The following image indicates the location of the processor fan and 125 W heat-sink and provides a visual representation of the

installation procedure.

Steps

1. Align the screws on the processor fan and heat-sink assembly with the screw holders on the system board and place the

processor fan and heat-sink assembly on the processor.

NOTE: Ensure that the triangle mark is directed towards the rear side of the computer.

2. In the sequential order (1->2->3->4), tighten the captive screws to secure the processor fan and heat-sink assembly to the

system board.

NOTE: Tighten the screws in a sequential order (1,2,3,4) as printed on the heat-sink assembly.

3. Connect the processor-fan cable to the connector on the system board.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Removing the processor fan and 65 W heat-sink assembly

Prerequisites

1. Follow the procedure in before working inside your computer.

WARNING: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to

cool before you touch it.

36 Removing and installing components

CAUTION: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The

oils in your skin can reduce the heat transfer capability of the thermal grease.

2. Remove the side cover.

About this task

The following images indicate the location of the processor fan and heat-sink and provide a visual representation of the removal

procedure.

Steps

1. Disconnect the processor fan cable from the connector on the system board.

2. Loosen the four captive screws that secure the processor fan and heat-sink assembly to the system board.

3. Lift the processor fan and heat-sink assembly off the system board.

Installing the processor fan and 65 W heat-sink assembly

Prerequisites

NOTE: If either the processor or the heat sink is replaced, use the thermal grease that is provided in the kit to ensure that

thermal conductivity is achieved.

About this task

The following image indicates the location of the processor fan and heat-sink assembly and provides a visual representation of

the installation procedure.

Removing and installing components 37

Steps

1. Align the screw holes on the processor fan and heat-sink assembly with the screw holes on the system board.

2. Tighten the four captive screws that secure the processor fan and heat-sink assembly to the system board.

3. Connect the processor-fan cable to the connector on the system board.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Processor

Removing the processor

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the processor fan and 125 W heat-sink assembly or processor fan and heat-sink assembly.

NOTE: The processor might still be hot after the computer is shut down. Allow the processor to cool down before removing

it.

About this task

The following images indicate the location of the processor and provide a visual representation of the removal procedure.

38 Removing and installing components

Steps

1. Press down and push the release lever away from the processor to release it from the securing tab.

2. Lift the lever upward to lift the processor cover.

CAUTION: When removing the processor, do not touch any of the pins inside the socket or allow any objects

to fall on the pins in the socket.

3. Gently lift the processor from the processor socket.

Installing the processor

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the processor and provides a visual representation of the installation procedure.

Removing and installing components 39

Steps

1. Ensure that the release lever on the processor socket is fully extended in the open position.

2. Align the notches on the processor with the tabs on the processor socket and place the processor in the processor socket.

NOTE: The pin 1 corner of the processor has a triangle that aligns with the triangle on the pin 1 corner on the processor

socket. When the processor is properly seated, all four corners are aligned at the same height. If one or more corners of

the processor are higher than the others, the processor is not seated properly.

3. When the processor is fully seated in the socket, pivot the release-lever down and place it under the tab on the processor

cover.

Next steps

1. Install the processor fan and 125 W heat-sink assembly or processor fan and heat-sink assembly.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

40 Removing and installing components

Graphics card

Removing the graphics card

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the graphics card and provide a visual representation of the removal procedure.

Steps

1. Locate the graphics card (PCI-Express).

2. Lift the pull tab to open the PCIe door.

3. Push and hold the securing tab on the graphics-card slot and lift the graphics card from the graphics-card slot.

Removing and installing components 41

Installing the graphics card

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the graphics card and provide a visual representation of the installation procedure.

Steps

1. Align the graphics card with the PCI-Express card connector on the system board.

2. Using the alignment post, connect the graphics card in the connector and press down firmly. Ensure that the card is firmly

seated.

3. Lift the pull tab to close the PCIe door.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

42 Removing and installing components

Graphical processing unit

Removing the powered GPU

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the powered graphical processing unit and provide a visual representation of the

removal procedure.

Removing and installing components 43

Steps

1. Disconnect the two power cables from the connectors on the powered GPU through the cable holder.

2. Unroute the power cable from the retention tab on the cable holder.

3. Press the securing clips on both side of the power-cable holder and slide the powered GPU cable holder out of the

computer.

4. Lift the pull tab to open the PCIe door.

Installing the powered GPU

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the powered graphical processing unit and provide a visual representation of the

installation procedure.

44 Removing and installing components

Steps

1. Align the powered GPU with the PCI-Express card connector on the system board.

2. Using the alignment post, connect the powered GPU in the connector and press down firmly. Ensure that the powered GPU

is firmly seated.

3. Lift the pull tab to close the PCIe door.

Removing and installing components 45

4. Align the triangles on the powered GPU cable holder with the triangles on the chassis.

5. Place the powered GPU cable holder on the computer chassis until it clicks to place.

6. Route the power cable through the retention tab on the cable holder.

7. Connect the two power cables, through the slot on the cable holder, to the connector on the powered GPU.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Coin-cell battery

Removing the coin-cell battery

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the powered GPU.

NOTE: This step is required only if the system is configured with powered GPU.

About this task

The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure.

Steps

1. Using a plastic scribe, gently pry the coin-cell battery out of the slot on the system board.

2. Remove the coin-cell battery away from the computer.

46 Removing and installing components

Installing the coin-cell battery

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the coin-cell battery and provides a visual representation of the installation

procedure.

Steps

1. Insert the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the

connector.

2. Press the battery into the connector until it locks into place.

Next steps

1. Install the powered GPU.

NOTE: This step is required only if the system is configured with powered GPU.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

WLAN card

Removing the WLAN card

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the powered GPU.

NOTE: This step is required only if the system is configured with powered GPU.

Removing and installing components 47

About this task

The following images indicate the location of the wireless card and provide a visual representation of the removal procedure.

Steps

1. Remove the (M2x3.5) screw that secures the WLAN card to the system board.

2. Lift the WLAN card bracket away from the WLAN card.

3. Disconnect the antenna cables from the WLAN card.

4. Slide and remove the WLAN card from the connector on the system board.

Installing the WLAN card

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the wireless card and provides a visual representation of the installation procedure.

48 Removing and installing components

Steps

1. Connect the antenna cables to the WLAN card.

The following table provides the antenna-cable color scheme for the WLAN card of your computer.

Table 2. Antenna-cable color scheme

Connectors on the wireless card Antenna-cable color

Main (white triangle) White

Auxiliary (black triangle) Black

2. Place the WLAN card bracket to secure the WLAN antenna cables.

3. Insert the WLAN card into the connector on the system board.

4. Replace the (M2x3.5) screw to secure the plastic tab to the WLAN card.

Next steps

1. Install the powered GPU.

NOTE: This step is required only if the system is configured with powered GPU.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Removing and installing components 49

Slim optical-drive

Removing the Slim optical drive

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the slim ODD and provide a visual representation of the removal procedure.

Steps

1. Disconnect the data and power cables from the slim ODD.

2. Push the securing tab to release the slim ODD from the chassis.

3. Slide and remove the slim ODD from the ODD slot.

50 Removing and installing components

Installing the Slim optical drive

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the slim ODD and provide a visual representation of the installation procedure.

Steps

1. Insert the slim ODD assembly into the ODD slot.

2. Slide the slim ODD assembly until it snaps into place.

3. Route the power cable and data cable through the routing guides and connect the cables to the slim ODD.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Removing and installing components 51

Slim optical-drive bracket

Removing the slim-ODD bracket

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the slim Optical Disk Drive.

About this task

The following images indicate the location of the slim-ODD bracket and provide a visual representation of the removal

procedure.

Steps

1. Pry the slim-ODD bracket to release it from the slot on the ODD.

2. Remove the slim-ODD bracket off the ODD.

Installing the slim-ODD bracket

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the slim-ODD bracket and provide a visual representation of the installation

procedure.

52 Removing and installing components

Steps

1. Align and place the slim-ODD bracket on the ODD slots.

2. Snap the slim-ODD bracket into the slim ODD.

Next steps

1. Install the slim Optical Disk Drive.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Chassis fan

Removing the chassis fan

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following image indicates the location of the chassis fan and provide a visual representation of the removal procedure.

Removing and installing components 53

Steps

1. Locate the chassis fan.

2. Disconnect the fan cable from the connector on the system board.

3. Gently pull the rubber grommets to release the fan from the chassis.

4. Remove the fan off the chassis.

Installing the chassis fan

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the chassis fan and provide a visual representation of the installation procedure.

54 Removing and installing components

Steps

1. Insert the rubber grommets on the chassis.

2. Align the slots on the fan with the rubber grommets on the chassis.

3. Route the rubber grommets through the slots on the fan and pull the rubber grommets until the fan snaps into position.

4. Connect the fan cable to the connector on the system board.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Voltage regulator heat sink

Removing the VR heat sink

Prerequisites

1. Follow the procedure in before working inside your computer.

Removing and installing components 55

WARNING: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to

cool before you touch it.

CAUTION: For maximum cooling of the processor, do not touch the heat transfer areas on the heat sink. The

oils in your skin can reduce the heat transfer capability of the thermal grease.

2. Remove the side cover.

About this task

The following image indicates the location of the VR heat sink and provide a visual representation of the removal procedure.

Steps

1. Loosen the two captive screws that secure the VR heat sink to the system board.

2. Lift the VR heat sink off the system board.

Installing the VR heat sink

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the VR heat sink and provide a visual representation of the installation procedure.

56 Removing and installing components

Steps

1. Remove the liner behind the VR heatsink module.

2. Align and adhere the VR heatsink on the system board.

3. Tighten the two captive screws that secure the VR heatsink to the system board.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Speaker

Removing the speaker

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following images indicate the location of the speaker and provide a visual representation of the removal procedure.

Removing and installing components 57

Steps

1. Disconnect the speaker cable from the connector on the system board.

2. Press the tab and slide the speaker along with the cable from the slot on the chassis.

Installing the speaker

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the speaker and provides a visual representation of the installation procedure.

58 Removing and installing components

Steps

1. Press and slide the speaker in the slot on the chassis until it snaps into place.

2. Connect the speaker cable to the connector on the system board.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Power button

Removing the power button

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the front bezel.

About this task

The following images indicate the location of the power button and provide a visual representation of the removal procedure.

Removing and installing components 59

Steps

1. Disconnect the power-button cable from the connector on the system board.

2. Press the release tabs on the power-button head and slide the power-button cable out from the front-side chassis of the

computer.

3. Pull the power-button cable out from the computer.

Installing the power button

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the power button and provide a visual representation of the installation procedure.

60 Removing and installing components

Steps

1. Insert the power-button cable into the slot from the front-side of the computer, and press the power-button head until it

clicks into the place in the chassis.

2. Align and connect the power-button cable to the connector on the system board.

Next steps

1. Install the front bezel.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Power-supply unit

Removing the power-supply unit

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the processor fan and heat-sink assembly.

NOTE: Note the routing of all cables as you remove them so that you can route them correctly while you are replacing the

power-supply unit.

Removing and installing components 61

About this task

The following images indicate the location of the power-supply unit and provide a visual representation of the removal

procedure.

62 Removing and installing components

Steps

1. Lay the computer on the right side.

2. Disconnect the power cables from the system board and unroute them from the routing guides on the chassis.

3. Remove the three (#6-32) screws that secure the power-supply unit to the chassis.

4. Press the securing clip and slide the power-supply unit away from the back of the chassis.

5. Lift the power-supply unit off the chassis.

Installing the power-supply unit

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

WARNING: The cables and ports on the back of the power-supply unit are color-coded to indicate the different

power wattage. Ensure that you plug in the cable to the correct port. Failure to do so may result in damaging the

power-supply unit and/or system components.

About this task

The following images indicate the location of the power-supply unit and provide a visual representation of the installation

procedure.

Removing and installing components 63

64 Removing and installing components

Steps

1. Slide the power-supply unit into the chassis until the securing tab snaps into position.

2. Replace the three (#6-32) screws to secure the power-supply unit to the chassis.

3. Route the power cable through the routing guides on the chassis and connect the power cables to their respective

connectors on the system board.

Next steps

1. Install the processor fan and heat-sink assembly.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Removing the power-supply unit (For systems with powered GPU)

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the processor fan and 125 W heat-sink assembly or processor fan and heat-sink assembly.

Removing and installing components 65

NOTE: Note the routing of all cables as you remove them so that you can route them correctly while you are replacing the

power-supply unit.

About this task

The following images indicate the location of the power-supply unit and provides a visual representation of the removal

procedure.

66 Removing and installing components

Removing and installing components 67

Steps

1. Lay the computer on the right side.

2. Disconnect the power cables from the connectors on the powered GPU through the cable holder.

3. Unroute the power cable from the retention tab on the cable holder.

4. Press the securing clips on both side of the cable holder and slide the powered GPU cable holder out of the computer.

5. Unroute the cables from the routing guides on the chassis.

6. Remove the three (#6-32) screws that secure the power-supply unit to the chassis.

7. Press the securing clip and slide the power-supply unit away from the back of the chassis.

8. Lift the power-supply unit off the chassis.

Installing the power-supply unit (For systems with powered GPU)

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

WARNING: The cables and ports on the back of the power-supply unit are color-coded to indicate the different

power wattage. Ensure that you plug in the cable to the correct port. Failure to do so may result in damaging the

power-supply unit and/or system components.

About this task

The following images indicate the location of the power-supply unit and provides a visual representation of the installation

procedure.

68 Removing and installing components

Removing and installing components 69

Steps

1. Slide the power-supply unit into the chassis until the securing tab snaps into position.

2. Replace the three screws (#6-32) that secure the power-supply unit to the chassis.

3. Route the power cable through the routing guides on the chassis and connect the power cables to their respective

connectors on the system board.

70 Removing and installing components

4. Align the triangles on the powered GPU cable holder with the triangles on the chassis.

5. Place the powered GPU cable holder on the computer chassis until it clicks to place.

6. Route the power cable through the retention tab on the cable holder.

7. Connect the two power cables, through the slot on the cable holder, to the connector on the powered GPU.

Next steps

1. Install the processor fan and 125 W heat-sink assembly or processor fan and heat-sink assembly.

2. Install the side cover.

3. Follow the procedure in after working inside your computer.

Intrusion switch

Removing the intrusion switch

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

About this task

The following image indicates the location of the intrusion switch and provides a visual representation of the removal procedure.

Steps

1. Disconnect the intruder cable from the connector on the system board.

2. Slide and remove the intrusion switch from the chassis.

Removing and installing components 71

Installing the intrusion switch

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the location of the intrusion switch and provides a visual representation of the installation

procedure.

Steps

1. Insert the intrusion switch into its slot and slide the switch to secure it into the slot.

2. Connect the intruder cable to the connector on the system board.

Next steps

1. Install the side cover.

2. Follow the procedure in after working inside your computer.

Optional I/O modules (Type C/ HDMI/VGA/DP/Serial)

Removing optional I/O modules (Type-C/HDMI/VGA/DP/Serial)

Prerequisites

1. Follow the procedure in before working inside your computer.

2. Remove the side cover.

3. Remove the front bezel.

4. Remove the chassis fan.

72 Removing and installing components

About this task

The following images indicate the location of the optional I/O Modules and provide a visual representation of the removal

procedure.

Steps

1. Remove the two (M3X3) screws that secure the optional i/O module to the computer chassis.

2. Disconnect the I/O-module cable from the connector on the system board.

3. Remove the I/O module from the computer.

Installing optional I/O modules (Type-C/HDMI/VGA/DP/Serial)

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following images indicate the location of the system board and provide a visual representation of the installation procedure.

Removing and installing components 73

Steps

1. To remove the dummy metal bracket, insert a flat-head screwdriver in the hole of the bracket, push the bracket to release

the bracket, and then lift the bracket out from the system.

2. Insert the optional I/O module (Type-C/HDMI/VGA/DP/Serial) into its slot from the inside of your computer.

3. Connect the I/O cable to the connector on the system board .

4. Replace the two (M3X3) screws to secure the optional I/O module to the system.

Next steps

1. Install the chassis fan.

2. Install the front bezel.

3. Install the side cover.

4. Follow the procedure in after working inside your computer.

System board

Removing the system board

Prerequisites

1. Follow the procedure in before working inside your computer.

NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup

program after you replace the system board.

NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup

program. You must make the appropriate changes again after you replace the system board.

74 Removing and installing components

NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can

reconnect the cables correctly after you replace the system board.

2. Remove the side cover.

3. Remove the front bezel.

4. Remove the memory module.

5. Remove the WLAN.

6. Remove the M.2 2230 SSD/M.2 2280 SSD.

7. Remove the coin-cell battery.

8. Remove the graphics card.

9. Remove the powered GPU.

NOTE: This step is required only if the system is configured with powered GPU.

10. Remove the speaker.

11. Remove the intrusion switch.

12. Remove the VR heatsink.

13. Remove the processor fan and 125 W heat-sink assembly or processor fan and heat-sink assembly.

14. Remove the chassis fan.

15. Remove the processor.

About this task

The following image indicates the connectors on your system board.

1. CPU power connector

2. Processor fan connector

3. Memory module connector

4. Power button connector

5. Remote power switch connector

6. SD card reader connector

7. SATA0 connector (blue)

8. M.2 PCIe SSD connector

9. Internal USB connector

Removing and installing components 75

10. Two SATA1/2 connector (black)

11. SATA3 connector (white)

12. SATA power cable connector

13. Coin-cell battery

14. M.2 WLAN connector

15. System power connector

16. Internal speaker connector

17. Thunderbolt header

18. M.2 PCIe SSD connector

19. PCIe x4 (Slot4)

20. PCI (Slot3)

21. PCIe x16 (Slot2)

22. PCIE x1 (Slot1)

23. System fan connector

24. Chassis Intrusion Detection connector

25. Type-C connector

26. Processor socket

27. Video connector

The following images indicate the location of the system board and provide a visual representation of the removal procedure.

76 Removing and installing components

Removing and installing components 77

Steps

1. Remove the (#6-32) screw that secures the front I/O-bracket to the chassis.

2. Slide and remove the front I/O-bracket from the chassis.

3. Disconnect the power cables that are connected to the system board and unroute them from the routing guides on the

chassis.

78 Removing and installing components

4. Remove the eight (#6-32) screws that secure the system board to the chassis.

5. Remove the (M2x4) screw that secures the system board to the chassis.

6. Lift the system board at an angle and remove the system board off the chassis.

Installing the system board

Prerequisites

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

The following image indicates the connectors on your system board.

1. CPU power connector

2. Processor fan connector

3. Memory module connector

4. Power button connector

5. Remote power switch connector

6. SD card reader connector

7. SATA0 connector (blue)

8. M.2 PCIe SSD connector

9. Internal USB connector

10. Two SATA1/2 connector (black)

11. SATA3 connector (white)

12. SATA power cable connector

13. Coin-cell battery

14. M.2 WLAN connector

15. System power connector

16. Internal speaker connector

17. Thunderbolt header

Removing and installing components 79

18. M.2 PCIe SSD connector

19. PCIe x4 (Slot4)

20. PCI (Slot3)

21. PCIe x16 (Slot2)

22. PCIE x1 (Slot1)

23. System fan connector

24. Chassis Intrusion Detection connector

25. Type-C connector

26. Processor socket

27. Video connector

The following images indicate the location of the system board and provide a visual representation of the installation procedure.

80 Removing and installing components

Removing and installing components 81

Steps

1. Slide the front I/O-ports on the system board into the front I/O-slots on the chassis and align the screw holes on the

system board with the screw holes on the chassis.

2. Replace the (M2x4) screw to secure the system board to the chassis.

3. Replace the eight screws (#6-32) that secure the system board to the chassis.

82 Removing and installing components

4. Route the power cable through the routing guides on the chassis and connect the power cables to their respective

connectors on the system board.

5. Align the front I/O-bracket with the slots on the chassis.

6. Replace the (#6-32) screw that secures the front I/O-bracket to the chassis.

Next steps

1. Install the processor.

2. Install the chassis fan.

3. Install the processor fan and 125 W heat-sink assembly or processor fan and heat-sink assembly.

4. Install the coin-cell battery.

5. Install the VR heatsink.

6. Remove the intrusion switch.

7. Remove the speaker.

8. Install the powered GPU.

NOTE: This step is required only if the system is configured with powered GPU.

9. Install the graphics card.

10. Install the M.2 2230 SSD/M.2 2280 SSD.

11. Install the WLAN.

12. Install the memory module.

13. Install the front bezel.

14. Install the side cover.

15. Follow the procedure in after working inside your computer.

NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup

program after you replace the system board.

NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup

program. You must make the appropriate changes again after you replace the system board.

Removing and installing components 83

Software

This chapter details the supported operating systems along with instructions on how to install the drivers.

Drivers and downloads

When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article,

Drivers and Downloads FAQ SLN128938.

84 Software

System setup

CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program.

Certain changes can make your computer work incorrectly.

NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen

information for future reference.

Use the BIOS Setup program for the following purposes:

●Get information about the hardware installed in your computer, such as the amount of RAM and the size of the hard drive.

●Change the system configuration information.

●Set or change a user-selectable option, such as the user password, type of hard drive installed, and enabling or disabling

base devices.

Boot menu

Press <F12> when the Dell logo appears to initiate a one-time boot menu with a list of the valid boot devices for the system.

Diagnostics and BIOS Setup options are also included in this menu. The devices listed on the boot menu depend on the bootable

devices in the system. This menu is useful when you are attempting to boot to a particular device or to bring up the diagnostics

for the system. Using the boot menu does not make any changes to the boot order stored in the BIOS.

The options are:

●UEFI Boot:

○Windows Boot Manager

●Other Options:

○BIOS Setup

○BIOS Flash Update

○Diagnostics

○Change Boot Mode Settings

Navigation keys

NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart

the system.

Keys Navigation

Up arrow Moves to the previous field.

Down arrow Moves to the next field.

Enter Selects a value in the selected field (if applicable) or follow the link in the field.

Spacebar Expands or collapses a drop-down list, if applicable.

Tab Moves to the next focus area.

Esc Moves to the previous page until you view the main screen. Pressing Esc in the main screen displays a

message that prompts you to save any unsaved changes and restarts the system.

System setup 85

Boot Sequence

Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for

example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can:

●Access System Setup by pressing F2 key

●Bring up the one-time boot menu by pressing F12 key.

The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options

are:

●Removable Drive (if available)

●STXXXX Drive

NOTE: XXXX denotes the SATA drive number.

●Optical Drive (if available)

●SATA Hard Drive (if available)

●Diagnostics

NOTE: Choosing Diagnostics, displays the SupportAssist screen.

The boot sequence screen also displays the option to access the System Setup screen.

System setup options

NOTE: Depending on your computer and its installed devices, the items that are listed in this section may or may not

appear.

Table 3. System setup options—System information menu

Overview

OptiPlex 7090 Tower

BIOS Version Displays the BIOS version number.

Service Tag Displays the Service Tag of the computer.

Asset Tag Displays the Asset Tag of the computer.

Manufacture Date Displays the manufacture date of the computer.

Ownership Date Displays the ownership date of the computer.

Express Service Code Displays the express service code of the computer.

Ownership Tag Displays the Ownership Tag of the computer.

Signed Firmware Update Displays whether the Signed Firmware Update is enabled on your computer.

Processor Information

Processor Type Displays the processor type.

Maximum Clock Speed Displays the maximum processor clock speed.

Minimum Clock Speed Displays the minimum processor clock speed.

Current Clock Speed Displays the current processor clock speed.

Core Count Displays the number of cores on the processor.

Processor ID Displays the processor identification code.

Processor L2 Cache Displays the processor L2 Cache size.

Processor L3 Cache Displays the processor L3 Cache size.

Microcode Version Displays the microcode version.

Intel Hyper-Threading Capable Displays whether the processor is Hyper-Threading (HT) capable.

64-Bit Technology Displays whether 64-bit technology is used.

86 System setup

Table 3. System setup options—System information menu (continued)

Overview

Memory Information

Memory Installed Displays the total computer memory installed.

Memory Available Displays the total computer memory available.

Memory Speed Displays the memory speed.

Memory Channel Mode Displays single or dual channel mode.

Memory Technology Displays the technology that is used for the memory.

DIMM 1 Size Displays the DIMM 1 memory size.

DIMM 2 Size Displays the DIMM 2 memory size.

DIMM 3 Size Displays the DIMM 3 memory size.

DIMM 4 Size Displays the DIMM 4 memory size.

Devices Information

Video Controller Displays the video controller type of the computer.

Video Memory Displays the video memory information of the computer.

Wi-Fi Device Displays the wireless device information of the computer.

Native Resolution Displays the native resolution of the computer.

Video BIOS Version Displays the video BIOS version of the computer.

Audio Controller Displays the audio controller information of the computer.

Bluetooth Device Displays the Bluetooth device information of the computer.

LOM MAC Address Displays the LAN On Motherboard (LOM) MAC address of the computer.

dGPU Video Controller Displays the discrete video controller type of the computer.

Slot 1 Displays the SATA hard drive information of the computer.

Slot 2 Displays the SATA hard drive information of the computer.

Slot 3 Displays the SATA hard drive information of the computer.

Slot 4 Displays the SATA hard drive information of the computer.

Table 4. System setup options—Boot Configuration menu

Boot Configuration

Boot Sequence

Boot Mode: UEFI only Displays the boot mode.

Boot Sequence Displays the boot sequence.

Secure Digital (SD) Card Boot Enable or disable the SD card read-only boot.

By default, the Secure Digital (SD) Card Boot option is not enabled.

Secure Boot

Enable Secure Boot Enable or disable the secure boot feature.

By default, the option is not enabled.

Secure Boot Mode Enable or disable to change the secure boot mode options.

By default, the Deployed Mode is enabled.

Expert Key Management

Enable Custom Mode Enable or disable custom mode.

System setup 87

Table 4. System setup options—Boot Configuration menu (continued)

Boot Configuration

By default, the custom mode option is not enabled.

Custom Mode Key Management Select the custom values for expert key management.

Table 5. System setup options—Integrated Devices menu

Integrated Devices

Date/Time Displays the current date in MM/DD/YYYY format and current time in

HH:MM:SS AM/PM format.

Audio

Enable Audio Enable or disable the integrated audio controller.

By default, all the options are enabled.

Serial Port

Serial Port Configuration Enable or disable the serial port address.

By default, the COM1: Port is configured at 3F8h with IRQ4 option is

enabled.

USB Configuration ●Enable or disable booting from USB mass storage devices through the boot

sequence or boot menu.

By default, all the options are enabled.

Front USB Configuration Enable or disable the individual front USB ports.

By default, all the options are enabled.

Rear USB Configuration Enable or disable the individual rear USB ports.

By default, all the options are enabled.

Miscellaneous Devices Enable or disable the PCI Slot

By default, the option is enabled.

Dust Filter Maintenance Enable or disable the dust filter maintenance.

By default, the Disabled option is enabled.

Table 6. System setup options—Storage menu

Storage

SATA Operation Enable or disable the operating mode of the integrated SATA hard drive

controller.

By default, the AHCIoption is enabled.

Storage Interface

Port Enablement Enable or disable the onboard drives.

By default, all the options are enabled.

SMART Reporting

Enable SMART Reporting Enable or disable Self-Monitoring, Analysis, and Reporting Technology

(SMART) during computer startup.

By default, the Enable SMART Reporting option is not enabled.

Drive Information

SATA-0

Type Displays the SATA HDD type information of the computer.

88 System setup

Table 6. System setup options—Storage menu (continued)

Storage

Device Displays the SATA HDD device information of the computer.

SATA-1

Type Displays the SATA HDD type information of the computer.

Device Displays the SATA HDD device information of the computer.

SATA-2

Type Displays the SATA HDD type information of the computer.

Device Displays the SATA HDD device information of the computer.

SATA-3

Type Displays the SATA HDD type information of the computer.

Device Displays the SATA HDD device information of the computer.

M.2 PCIe SSD-0

Type Displays the M.2 PCIe SSD-0 type information of the computer.

Device Displays the M.2 PCIe SSD-0 device information of the computer.

M.2 PCIe SSD-1

Type Displays the M.2 PCIe SSD-1 type information of the computer.

Device Displays the M.2 PCIe SSD-1 device information of the computer.

Enable MediaCard

Secure Digital (SD) Card Enable or disable the SD card.

By default, the Secure Digital (SD) Card option is enabled.

Secure Digital (SD) Card Read-Only Mode Enable or disable the SD card read-only mode.

By default, the Secure Digital (SD) Card Read-Only Mode option is not

enabled.

Table 7. System setup options—Display menu

Display

Multi-Display

Enable Multi-Display Enable or disable the Enable Multi-Display buttons on the computer.

By default, the option is enabled.

Primary Display

Video Primary Display Determines the primary display when multiple controllers are available on the

computer

By default, the Auto option is enabled.

Full Screen Logo Enable or disable full screen logo.

By default, the option is not enabled.

Table 8. System setup options—Connection menu

Connection

Network Controller Configuration

Integrated NIC Controls the on-board LAN controller.

By default, the Enabled with PXE option is enabled.

System setup 89

Table 8. System setup options—Connection menu (continued)

Connection

Wireless Device Enable

WLAN Enable or disable the internal WLAN device

By default, the option enabled.

Bluetooth Enable or disable the internal Bluetooth device

By default, the option enabled.

Enable UEFI Network Stack Enable or disable UEFI Network Stack and controls the on-board LAN

Controller.

By default, the option is enabled.

HTTPs Boot Feature

HTTPs Boot Enable or disable the HTTPs Boot feature.

By default, the HTTPs Boot option is enabled.

HTTPs Boot Mode With Auto Mode, the HTTPs Boot extracts Boot URL from the DHCP. With

Manual Mode, the HTTPs Boot reads Boot URL from the user-provided data.

By default, the Auto Mode option is enabled.

Table 9. System setup options—Power menu

Power

USB PowerShare

Enable USB PowerShare Enable or disable the USB PowerShare.

By default, the Enable USB PowerShare option is enabled

USB Wake Support

Enable USB Wake Support When enabled, you can use the USB devices like a mouse or keyboard to wake

your computer from standby.

By default, the option is enabled.

AC Behavior

AC Recovery Enables the system to turn on automatically, when AC is inserted.

By default, the Power Off option is enabled.

Active State Power Management

Aspm Enables or disables the Active State Power Management (ASPM) level

By default, the Auto option is enabled.

Block Sleep Enables to block entering sleep (S3) mode in the operating system.

By default, the Block Sleep option is disabled.

Deep Sleep Control Enable or disable the Deep Sleep mode support.

By default, the Disabled option is enabled.

Fan Control Override Enable or disable the fan control override feature.

By default, the option is disabled.

Intel Speed Shift Technology Enable or disable the Intel speed shift technology support.

By default, the Intel Speed Shift Technology option is enabled.

90 System setup

Table 10. System setup options—Security menu

Security

TPM 2.0 Security

TPM 2.0 Security On Enable or disable TPM 2.0 security options.

By default, the TPM 2.0 Security On option is enabled.

Attestation Enable Enables to control whether the Trusted Platform Module (TPM) Endorsement

Hierarchy is available to the operating system.

By default, the Attestation Enable option is enabled.

Key Storage Enable Enables to control whether the Trusted Platform Module (TPM) Storage

Hierarchy is available to the operating system.

By default, the Key Storage Enable option is enabled.

SHA-256 BIOS and the TPM will use the SHA-256 hash algorithm to extend

measurements into the TPM PCRs during BIOS boot.

By default, the SHA-256 option is enabled.

Clear Enables to clear the TPM owner information and returns the TPM to the

default state.

By default, the Clear option is disabled.

PPI ByPass for Clear Commands Controls the TPM Physical Presence Interface (PPI).

By default, the PPI ByPass for clear Commands option is disabled.

Chassis intrusion Controls the chassis intrusion feature.

By default, the option is disabled.

SMM Security Mitigation Enable or disable SMM Security Mitigation.

By default, the option is enabled.

Data Wipe on Next Boot

Start Data Wipe Enable or disable the data wipe on next boot.

By default, the option is disabled.

Absolute Enable or disable or permanently disable the BIOS module interface of the

optional Absolute Persistence Module service from Absolute software.

By default, the Enable Absolute option is enabled.

UEFI Boot Path Security Controls whether or not the computer will prompt the user to enter the admin

password (if set) when booting to a UEFI boot device from the F12 boot menu.

By default, the Always Except Internal HDD option is enabled.

Table 11. System setup options—Passwords menu

Passwords

Admin Password Set, change, or delete the administrator password.

System Password Set, change, or delete the computer password.

Internal HDD-0 Password Set, change, or delete the Internal HDD-0 password.

NVMe SSD0 Set, change, or delete the NVMe SSD0 password.

Password Configuration

Upper Case Letter Reinforces password must have at least one upper case letter.

By default, the option is disabled.

Lower Case Letter Reinforces password must have at least one lower case letter.

System setup 91

Table 11. System setup options—Passwords menu (continued)

Passwords

By default, the option is disabled.

Digit Reinforces password must have at least one digit.

By default, the option is disabled.

Special Character Reinforces password must have at least one special character.

By default, the option is disabled.

Minimum Characters Set the minimum characters allowed for password.

Password Bypass When enabled, this always prompts for computer and internal hard drive

passwords when powered on from the off state.

By default, the Disabled option is enabled.

Password Changes

Enable Non-Admin Password Changes Enable or disable to change computer and hard drive password without the

need for admin password.

By default, the option is enabled.

Admin Setup Lockout

Enable Admin Setup Lockout Enables administrators control over how their users can or cannot access BIOS

setup.

By default, the option is disabled.

Master Password Lockout

Enable Master Password Lockout When enabled, this will disable the master password support.

By default, the option is disabled.

Allow Non-Admin PSID Revert

Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives

from the Dell Security Manager prompt.

By default, the option is disabled.

Table 12. System setup options—Update, Recovery menu

Update, Recovery

UEFI Capsule Firmware Updates Enable or disable BIOS updates through UEFI capsule update packages.

By default, the option is enabled.

BIOS Recovery from Hard Drive Enables the user to recover from certain corrupted BIOS conditions from a

recovery file on the user primary hard drive or an external USB key.

By default, the option is enabled.

BIOS Downgrade

Allow BIOS Downgrade Enable or disable the flashing of the computer firmware to previous revision is

blocked.

By default, the option is enabled.

SupportAssist OS Recovery Enable or disable the boot flow for SupportAssist OS Recovery tool in the

event of certain computer errors.

By default, the option is enabled.

BIOSConnect Enable or disable cloud Service OS recovery if the main operating system fails

to boot with the number of failures equal to or greater than the value specified

92 System setup

Table 12. System setup options—Update, Recovery menu (continued)

Update, Recovery

by the Auto OS Recovery Threshold setup option and local Service OS does not

boot or is not installed.

By default, the option is enabled.

Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console

and for Dell OS Recovery Tool.

By default, the threshold value is set to 2.

Table 13. System setup options—System Management menu

System Management

Service Tag Display the Service Tag of the computer.

Asset Tag Create a computer Asset Tag.

Wake on LAN/WLAN Enable or disable the computer to power on by special LAN signals when it

receives a wakeup signal from the WLAN.

By default, the Disabled option is selected.

Auto on Time Enable to set the computer to turn on automatically every day or on a

preselected date and time. This option can be configured only if the Auto On

Time is set to Everyday, Weekdays, or Selected Days.

By default, the option is disabled.

Intel AMT Capability

Enable Intel AMT Capability Enable or disable the Intel AMT capabilty.

By default, the Restrict MEBx Access option is enabled.

MEBx Hotkey Enable or disable MEBx hotkey.

By default, the option is disabled.

USB Provision

Enable USB Provision Enable or disable the Intel AMT provisioning using the local provisioning file

through a USB storage device.

By default, the option is disabled.

SERR Messages Enable or disable SERR messages.

By default, the option is enabled.

Table 14. System setup options—Keyboard menu

Keyboard

Keyboard Errors

Enable Keyboard Error Detection Enable or disable the keyboard error detection.

By default, the option is enabled.

Numlock LED

Enable Numlock LED Enable or disable Numlock LED.

By default, the option is enabled.

Device Configuration Hotkey Access

Device Configuration Hotkey Access Enable or disable users to access device configuration by using hotkeys.

By default, the option is enabled.

System setup 93

Table 15. System setup options—Pre-boot Behavior menu

Pre-boot Behavior

Warning and Errors Enable or disable the action to be done when a warning or error is encountered.

By default, the Prompt on Warnings and Errors option is enabled.

Fastboot Enable to set the speed of the boot process.

By default, the Thorough option is enabled.

Extend BIOS POST Time Set the BIOS POST time.

By default, the 0 seconds option is enabled.

Table 16. System setup options—Virtualization menu

Virtualization

Intel Virtualization Technology

Enable Intel Virtualization Technology

(VT)

Specify whether a Virtual Machine Monitor (VMM) can utilize the additional

hardware capabilities that are provided by Intel Virtualization Technology.

By default, the option is enabled.

VT for Direct I/O Specify whether a Virtual Machine Monitor (VMM) can utilize the additional

hardware capabilities that are provided by Intel Virtualization Technology for

Direct I/O.

By default, the option is enabled.

Intel Trusted Execution Technology

(TXT)

Enable Intel Trusted Execution

Technology (TXT)

Specifies whether a measured Virtual Machine Monitor (MVMM) can utilize the

additional hardware capabilities that are provided by Intel Trusted Execution

Technology.

By default, the option is disabled.

Table 17. System setup options—Performance menu

Performance

Multi Core Support

Active Cores Enables to change the number of CPU cores available to the operating system.

By default, the All Cores options are enabled.

Intel SpeedStep

Enable Intel SpeedStep Technology Enables the computer to dynamically adjust processor voltage and core

frequency, decreasing average power consumption and heat production.

By default, the option is enabled.

C-States Control

Enable C-State Control Enable or disable additional processor sleep states.

By default, the option is enabled.

Intel Turbo Boost Technology

Enable Intel Turbo Boost Technology Enable or disable Intel TurboBoost mode of the processor.

By default, the option is enabled.

Intel Hyper-Threading Technology

Enable Intel Hyper-Threading Technology Enable or disable Hyper-Threading in the processor.

By default, the option is enabled.

94 System setup

Table 18. System setup options—System Logs menu

System Logs

BIOS Event Log

Clear BIOS Event Log Display BIOS events.

By default, the Keep option is enabled.

Updating the BIOS in Windows

Prerequisites

It is recommended to update your BIOS (System Setup) when you replace the system board or if an update is available.

About this task

NOTE: If BitLocker is enabled, it must be suspended prior to updating the system BIOS, and then re enabled after the BIOS

update is completed.

Steps

1. Restart the computer.

2. Go to Dell.com/support.

●Enter the Service Tag or Express Service Code and click Submit.

●Click Detect Product and follow the instructions on screen.

3. If you are unable to detect or find the Service Tag, click Choose from all products.

4. Choose the Products category from the list.

NOTE: Choose the appropriate category to reach the product page.

5. Select your computer model and the Product Support page of your computer appears.

6. Click Get drivers and click Drivers and Downloads.

The Drivers and Downloads section opens.

7. Click Find it myself.

8. Click BIOS to view the BIOS versions.

9. Identify the latest BIOS file and click Download.

10. Select your preferred download method in the Please select your download method below window, click Download File.

The File Download window appears.

11. Click Save to save the file on your computer.

12. Click Run to install the updated BIOS settings on your computer.

Follow the instructions on the screen.

Updating BIOS on systems with BitLocker enabled

CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it

will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and the

system will ask for this on each reboot. If the recovery key is not known this can result in data loss or an

unnecessary operating system re-install. For more information on this subject, see Knowledge Article: https://

www.dell.com/support/article/sln153694

System setup 95

Updating your system BIOS using a USB flash drive

About this task

If the computer cannot load into Windows but there is still a need to update the BIOS, download the BIOS file using another

computer and save it to a bootable USB flash drive.

NOTE: You must use a bootable USB flash drive. For more information, see the knowledge base article SLN143196.

Steps

1. Download the BIOS update .exe file to another computer.

2. Copy the .exe file onto the bootable USB flash drive.

3. Insert the USB flash drive into the computer that requires the BIOS update.

4. Restart the computer and press F12 when the Dell logo appears to display the One Time Boot Menu.

5. Using arrow keys, select USB Storage Device and press Enter.

6. The computer restarts to a Diag C:\> prompt.

7. Run the file by typing the complete filename and press Enter.

8. The BIOS Update Utility is displayed. Follow the on-screen instructions.

Figure 1. DOS BIOS Update Screen

System and setup password

Table 19. System and setup password

Password type Description

System password Password that you must enter to log on to your system.

Setup password Password that you must enter to access and make changes to

the BIOS settings of your computer.

You can create a system password and a setup password to secure your computer.

CAUTION: The password features provide a basic level of security for the data on your computer.

CAUTION: Anyone can access the data stored on your computer if it is not locked and left unattended.

96 System setup

NOTE: System and setup password feature is disabled.

Assigning a system setup password

Prerequisites

You can assign a new System or Admin Password only when the status is in Not Set.

About this task

To enter the system setup, press F2 immediately after a power-on or reboot.

Steps

1. In the System BIOS or System Setup screen, select Security and press Enter.

The Security screen is displayed.

2. Select System/Admin Password and create a password in the Enter the new password field.

Use the following guidelines to assign the system password:

●A password can have up to 32 characters.

●The password can contain the numbers 0 through 9.

●Only lower case letters are valid, upper case letters are not allowed.

●Only the following special characters are allowed: space, (”), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`).

3. Type the system password that you entered earlier in the Confirm new password field and click OK.

4. Press Esc and a message prompts you to save the changes.

5. Press Y to save the changes.

The computer reboots.

Deleting or changing an existing system setup password

Prerequisites

Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing

System and Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is

Locked.

About this task

To enter the System Setup, press F2 immediately after a power-on or reboot.

Steps

1. In the System BIOS or System Setup screen, select System Security and press Enter.

The System Security screen is displayed.

2. In the System Security screen, verify that Password Status is Unlocked.

3. Select System Password, alter or delete the existing system password and press Enter or Tab.

4. Select Setup Password, alter or delete the existing setup password and press Enter or Tab.

NOTE: If you change the System and/or Setup password, re enter the new password when prompted. If you delete the

System and Setup password, confirm the deletion when prompted.

5. Press Esc and a message prompts you to save the changes.

6. Press Y to save the changes and exit from System Setup.

The computer restarts.

System setup 97

Troubleshooting

Dell SupportAssist Pre-boot System Performance

Check diagnostics

About this task

SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell

SupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by the BIOS

internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to:

●Run tests automatically or in an interactive mode

●Repeat tests

●Display or save test results

●Run thorough tests to introduce additional test options to provide extra information about the failed device(s)

●View status messages that inform you if tests are completed successfully

●View error messages that inform you of problems encountered during testing

NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer

terminal when the diagnostic tests are performed.

For more information, see Resolve Hardware Issues With Built-in and Online Diagnostics (SupportAssist ePSA, ePSA or PSA

Error Codes) .

Running the SupportAssist Pre-Boot System Performance Check

Steps

1. Turn on your computer.

2. As the computer boots, press the F12 key as the Dell logo appears.

3. On the boot menu screen, select the Diagnostics option.

4. Click the arrow at the bottom left corner.

Diagnostics front page is displayed.

5. Click the arrow in the lower-right corner to go to the page listing.

The items detected are listed.

6. To run a diagnostic test on a specific device, press Esc and click Yes to stop the diagnostic test.

7. Select the device from the left pane and click Run Tests.

8. If there are any issues, error codes are displayed.

Note the error code and validation number and contact Dell.

Diagnostic LED behavior

Table 20. Diagnostic LED behavior

Blinking pattern

Problem description Suggested resolutionAmber White

1 2 Unrecoverable SPI Flash

Failure

98 Troubleshooting

Table 20. Diagnostic LED behavior (continued)

Blinking pattern

Problem description Suggested resolutionAmber White

2 1 CPU failure ●Run the Dell Support

Assist/Dell Diagnostics

tool.

●If problem persists,

replace the system board.

2 2 System board failure (included

BIOS corruption or ROM

error)

●Flash latest BIOS version

●If problem persists,

replace the system board.

2 3 No memory/RAM detected ●Confirm that the memory

module is installed

properly.

●If problem persists,

replace the memory

module.

2 4 Memory/RAM failure ●Reset the memory module.

●If problem persists,

replace the memory

module.

2 5 Invalid memory installed ●Reset the memory module.

●If problem persists,

replace the memory

module.

2 6 System board / Chipset

Error / Clock failure / Gate

A20 failure / Super I/O

failure / Keyboard controller

failure

●Flash latest BIOS version

●If problem persists,

replace the system board.

3 1 CMOS battery failure ●Reset the CMOS battery

connection.

●If problem persists,

replace the RTS battery.

3 2 PCI or Video card/chip failure Replace the system board.

3 3 BIOS Recovery image not

found

●Flash latest BIOS version

●If problem persists,

replace the system board.

3 4 BIOS Recovery image found

but invalid

●Flash latest BIOS version

●If problem persists,

replace the system board.

3 5 Power rail failure ●EC ran into power

sequencing failure.

●If problem persists,

replace the system board.

3 6 SBIOS Flash corruption ●Flash corruption detected

by SBIOS

●If problem persists,

replace the system board.

3 7 Intel ME (Management

Engine) Error

●Timeout waiting on ME to

reply to HECI message

●If problem persists,

replace the system board.

Troubleshooting 99

Table 20. Diagnostic LED behavior (continued)

Blinking pattern

Problem description Suggested resolutionAmber White

4 2 CPU Power Cable Connection

Issue

Diagnostic error messages

Table 21. Diagnostic error messages

Error messages Description

AUXILIARY DEVICE FAILURE The touchpad or external mouse may be faulty. For an

external mouse, check the cable connection. Enable the

Pointing Device option in the System Setup program.

BAD COMMAND OR FILE NAME Ensure that you have spelled the command correctly, put

spaces in the proper place, and used the correct path name.

CACHE DISABLED DUE TO FAILURE The primary cache internal to the microprocessor has failed.

Contact Dell

CD DRIVE CONTROLLER FAILURE The optical drive does not respond to commands from the

computer.

DATA ERROR The hard drive cannot read the data.

DECREASING AVAILABLE MEMORY One or more memory modules may be faulty or improperly

seated. Reinstall the memory modules or, if necessary, replace

them.

DISK C: FAILED INITIALIZATION The hard drive failed initialization. Run the hard drive tests in

Dell Diagnostics.

DRIVE NOT READY The operation requires a hard drive in the bay before it can

continue. Install a hard drive in the hard drive bay.

ERROR READING PCMCIA CARD The computer cannot identify the ExpressCard. Reinsert the

card or try another card.

EXTENDED MEMORY SIZE HAS CHANGED The amount of memory recorded in non-volatile memory

(NVRAM) does not match the memory module installed in the

computer. Restart the computer. If the error appears again,

Contact Dell

THE FILE BEING COPIED IS TOO LARGE FOR THE

DESTINATION DRIVE

The file that you are trying to copy is too large to fit on the

disk, or the disk is full. Try copying the file to a different disk

or use a larger capacity disk.

A FILENAME CANNOT CONTAIN ANY OF THE

FOLLOWING CHARACTERS: \ / : * ? " < > | -

Do not use these characters in filenames.

GATE A20 FAILURE A memory module may be loose. Reinstall the memory module

or, if necessary, replace it.

GENERAL FAILURE The operating system is unable to carry out the command.

The message is usually followed by specific information.

For example, Printer out of paper. Take the

appropriate action.

HARD-DISK DRIVE CONFIGURATION ERROR The computer cannot identify the drive type. Shut down the

computer, remove the hard drive, and boot the computer from

an optical drive. Then, shut down the computer, reinstall the

hard drive, and restart the computer. Run the Hard Disk

Drive tests in Dell Diagnostics.

100 Troubleshooting

Table 21. Diagnostic error messages (continued)

Error messages Description

HARD-DISK DRIVE CONTROLLER FAILURE 0 The hard drive does not respond to commands from the

computer. Shut down the computer, remove the hard drive,

and boot the computer from an optical drive. Then, shut

down the computer, reinstall the hard drive, and restart the

computer. If the problem persists, try another drive. Run the

Hard Disk Drive tests in Dell Diagnostics.

HARD-DISK DRIVE FAILURE The hard drive does not respond to commands from the

computer. Shut down the computer, remove the hard drive,

and boot the computer from an optical drive. Then, shut

down the computer, reinstall the hard drive, and restart the

computer. If the problem persists, try another drive. Run the

Hard Disk Drive tests in Dell Diagnostics.

HARD-DISK DRIVE READ FAILURE The hard drive may be defective. Shut down the computer,

remove the hard drive, and boot the computer from an

optical. Then, shut down the computer, reinstall the hard

drive, and restart the computer. If the problem persists,

try another drive. Run the Hard Disk Drive tests in Dell

Diagnostics.

INSERT BOOTABLE MEDIA The operating system is trying to boot to non-bootable media,

such as an optical drive. Insert bootable media.

INVALID CONFIGURATION INFORMATION-PLEASE RUN

SYSTEM SETUP PROGRAM

The system configuration information does not match the

hardware configuration. The message is most likely to occur

after a memory module is installed. Correct the appropriate

options in the system setup program.

KEYBOARD CLOCK LINE FAILURE For external keyboards, check the cable connection. Run the

Keyboard Controller test in Dell Diagnostics.

KEYBOARD CONTROLLER FAILURE For external keyboards, check the cable connection. Restart

the computer, and avoid touching the keyboard or the mouse

during the boot routine. Run the Keyboard Controller test in

Dell Diagnostics.

KEYBOARD DATA LINE FAILURE For external keyboards, check the cable connection. Run the

Keyboard Controller test in Dell Diagnostics.

KEYBOARD STUCK KEY FAILURE For external keyboards or keypads, check the cable

connection. Restart the computer, and avoid touching the

keyboard or keys during the boot routine. Run the Stuck Key

test in Dell Diagnostics.

LICENSED CONTENT IS NOT ACCESSIBLE IN

MEDIADIRECT

Dell MediaDirect cannot verify the Digital Rights Management

(DRM) restrictions on the file, so the file cannot be played.

MEMORY ADDRESS LINE FAILURE AT ADDRESS, READ

VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated.

Reinstall the memory module or, if necessary, replace it.

MEMORY ALLOCATION ERROR The software you are attempting to run is conflicting with the

operating system, another program, or a utility. Shut down

the computer, wait for 30 seconds, and then restart it. Run

the program again. If the error message still appears, see the

software documentation.

MEMORY DOUBLE WORD LOGIC FAILURE AT ADDRESS,

READ VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated.

Reinstall the memory module or, if necessary, replace it.

MEMORY ODD/EVEN LOGIC FAILURE AT ADDRESS,

READ VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated.

Reinstall the memory module or, if necessary, replace it.

MEMORY WRITE/READ FAILURE AT ADDRESS, READ

VALUE EXPECTING VALUE

A memory module may be faulty or improperly seated.

Reinstall the memory module or, if necessary, replace it.

Troubleshooting 101

Table 21. Diagnostic error messages (continued)

Error messages Description

NO BOOT DEVICE AVAILABLE The computer cannot find the hard drive. If the hard drive is

your boot device, ensure that the drive is installed, properly

seated, and partitioned as a boot device.

NO BOOT SECTOR ON HARD DRIVE The operating system may be corrupted, Contact Dell.

NO TIMER TICK INTERRUPT A chip on the system board may be malfunctioning. Run the

System Set tests in Dell Diagnostics.

NOT ENOUGH MEMORY OR RESOURCES. EXIT SOME

PROGRAMS AND TRY AGAIN

You have too many programs open. Close all windows and

open the program that you want to use.

OPERATING SYSTEM NOT FOUND Reinstall the operating system. If the problem persists,

Contact Dell.

OPTIONAL ROM BAD CHECKSUM The optional ROM has failed. Contact Dell.

SECTOR NOT FOUND The operating system cannot locate a sector on the hard

drive. You may have a defective sector or corrupted File

Allocation Table (FAT) on the hard drive. Run the Windows

error-checking utility to check the file structure on the hard

drive. See Windows Help and Support for instructions (click

Start > Help and Support). If a large number of sectors are

defective, back up the data (if possible), and then format the

hard drive.

SEEK ERROR The operating system cannot find a specific track on the hard

drive.

SHUTDOWN FAILURE A chip on the system board may be malfunctioning. Run

the System Set tests in Dell Diagnostics. If the message

reappears, Contact Dell.

TIME-OF-DAY CLOCK LOST POWER System configuration settings are corrupted. Connect your

computer to an electrical outlet to charge the battery. If

the problem persists, try to restore the data by entering the

System Setup program, then immediately exit the program. If

the message reappears, Contact Dell.

TIME-OF-DAY CLOCK STOPPED The reserve battery that supports the system configuration

settings may require recharging. Connect your computer to an

electrical outlet to charge the battery. If the problem persists,

Contact Dell.

TIME-OF-DAY NOT SET-PLEASE RUN THE SYSTEM

SETUP PROGRAM

The time or date stored in the system setup program does

not match the system clock. Correct the settings for the Date

and Time options.

TIMER CHIP COUNTER 2 FAILED A chip on the system board may be malfunctioning. Run the

System Set tests in Dell Diagnostics.

UNEXPECTED INTERRUPT IN PROTECTED MODE The keyboard controller may be malfunctioning, or a memory

module may be loose. Run the System Memory tests and the

Keyboard Controller test in Dell Diagnostics or Contact

Dell.

X:\ IS NOT ACCESSIBLE. THE DEVICE IS NOT

READY

Insert a disk into the drive and try again.

102 Troubleshooting

System error messages

Table 22. System error messages

System message Description

Alert! Previous attempts at booting this

system have failed at checkpoint [nnnn]. For

help in resolving this problem, please note

this checkpoint and contact Dell Technical

Support

The computer failed to complete the boot routine three

consecutive times for the same error.

CMOS checksum error RTC is reset, BIOS Setup default has been loaded.

CPU fan failure CPU fan has failed.

System fan failure System fan has failed.

Hard-disk drive failure Possible hard disk drive failure during POST.

Keyboard failure Keyboard failure or loose cable. If reseating the cable does not

solve the problem, replace the keyboard.

No boot device available No bootable partition on hard disk drive, the hard disk drive

cable is loose, or no bootable device exists.

●If the hard drive is your boot device, ensure that the

cables are connected and that the drive is installed

properly and partitioned as a boot device.

●Enter system setup and ensure that the boot sequence

information is correct.

No timer tick interrupt A chip on the system board might be malfunctioning or

motherboard failure.

NOTICE - Hard Drive SELF MONITORING SYSTEM

has reported that a parameter has exceeded

its normal operating range. Dell recommends

that you back up your data regularly. A

parameter out of range may or may not

indicate a potential hard drive problem

S.M.A.R.T error, possible hard disk drive failure.

WiFi power cycle

About this task

If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be

performed. The following procedure provides the instructions on how to conduct a WiFi power cycle:

NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.

Steps

1. Turn off your computer.

2. Turn off the modem.

3. Turn off the wireless router.

4. Wait for 30 seconds.

5. Turn on the wireless router.

6. Turn on the modem.

7. Turn on your computer.

Troubleshooting 103

Getting help and contacting Dell

Self-help resources

You can get information and help on Dell products and services using these self-help resources:

Table 23. Self-help resources

Self-help resources Resource location

Information about Dell products and services www.dell.com

My Dell app

Tips

Contact Support In Windows search, type Contact Support, and press

Enter.

Online help for operating system www.dell.com/support/windows

www.dell.com/support/linux

Access top solutions, diagnostics, drivers and downloads, and

learn more about your computer through videos, manuals and

documents.

Your Dell computer is uniquely identified by a Service Tag or

Express Service Code. To view relevant support resources for

your Dell computer, enter the Service Tag or Express Service

Code at www.dell.com/support.

For more information on how to find the Service Tag for your

computer, see Locate the Service Tag on your computer.

Dell knowledge base articles for a variety of computer

concerns

1. Go to www.dell.com/support.

2. On the menu bar at the top of the Support page, select

Support > Knowledge Base.

3. In the Search field on the Knowledge Base page, type the

keyword, topic, or model number, and then click or tap the

search icon to view the related articles.

Contacting Dell

To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell.

NOTE: Availability varies by country/region and product, and some services may not be available in your country/region.

NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice,

packing slip, bill, or Dell product catalog.

104 Getting help and contacting Dell

Table of Contents

DELL 7090 User Manual

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