Table of Contents
- OptiPlex 5090 Tower Service Manual
- Contents
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw List
- Major components of your system
- Side cover
- Front bezel
- Fan shroud
- Hard-drive assembly
- 3.5 in. hard-drive assembly
- Solid-state drive
- Memory module
- SD card reader (optional)
- Processor fan and heat-sink assembly
- Processor
- Graphics card
- Graphical processing unit
- Coin-cell battery
- WLAN card
- Slim optical-drive
- Speaker
- Power button
- Power-supply unit
- Intrusion switch
- Optional I/O modules (Type C/ HDMI/VGA/DP/Serial)
- System board
- Software
- System setup
- Troubleshooting
- Getting help and contacting Dell
DELL 5090 User Manual
Displayed below is the user manual for 5090 by DELL which is a product in the PCs/Workstations category. This manual has pages.
Related Manuals
OptiPlex 5090 Tower
Service Manual
Regulatory Model: D29M
Regulatory Type: D29M003
August 2021
Rev. A02
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.
© 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other
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
Removing the front bezel...........................................................................................................................................15
Installing the front bezel.............................................................................................................................................15
Fan shroud........................................................................................................................................................................... 16
Removing the fan duct............................................................................................................................................... 16
Installing the fan duct..................................................................................................................................................17
Hard-drive assembly..........................................................................................................................................................18
Removing the 2.5-inch hard-drive assembly......................................................................................................... 18
Installing the 2.5-inch hard-drive assembly........................................................................................................... 19
3.5 in. hard-drive assembly............................................................................................................................................. 20
Removing the 3.5-inch hard-disk drive assembly................................................................................................20
Installing the 3.5-inch hard-disk drive assembly...................................................................................................21
Solid-state drive................................................................................................................................................................ 22
Removing the M.2 2230 PCIe solid-state drive................................................................................................... 22
Installing the M.2 2230 PCIe solid-state drive..................................................................................................... 23
Removing the M.2 2280 PCIe solid-state drive................................................................................................... 24
Installing the M.2 2280 PCIe solid-state drive..................................................................................................... 25
Memory module................................................................................................................................................................. 26
Removing the memory module.................................................................................................................................26
Installing the memory module................................................................................................................................... 27
SD card reader (optional)................................................................................................................................................28
Removing the SD card reader.................................................................................................................................. 28
Installing the SD card reader.................................................................................................................................... 29
Processor fan and heat-sink assembly........................................................................................................................ 30
Removing the processor fan and heat-sink assembly........................................................................................ 30
Installing the processor fan and heat-sink assembly........................................................................................... 31
Processor............................................................................................................................................................................ 32
Removing the processor............................................................................................................................................32
Contents
Contents 3
Installing the processor.............................................................................................................................................. 33
Graphics card..................................................................................................................................................................... 35
Removing the graphics card..................................................................................................................................... 35
Installing the graphics card....................................................................................................................................... 36
Graphical processing unit................................................................................................................................................ 37
Removing the powered GPU.................................................................................................................................... 37
Installing the powered GPU...................................................................................................................................... 38
Coin-cell battery................................................................................................................................................................ 39
Removing the coin-cell battery................................................................................................................................39
Installing the coin-cell battery.................................................................................................................................. 39
WLAN card..........................................................................................................................................................................40
Removing the WLAN card.........................................................................................................................................40
Installing the WLAN card............................................................................................................................................41
Slim optical-drive...............................................................................................................................................................43
Removing the Slim optical drive...............................................................................................................................43
Installing the Slim optical drive.................................................................................................................................43
Speaker................................................................................................................................................................................ 44
Removing the speaker................................................................................................................................................44
Installing the speaker..................................................................................................................................................45
Power button..................................................................................................................................................................... 46
Removing the power button.....................................................................................................................................46
Installing the power button....................................................................................................................................... 47
Power-supply unit............................................................................................................................................................. 48
Removing the power-supply unit.............................................................................................................................48
Installing the power-supply unit...............................................................................................................................50
Intrusion switch................................................................................................................................................................. 52
Removing the intrusion switch.................................................................................................................................52
Installing the intrusion switch...................................................................................................................................53
Optional I/O modules (Type C/ HDMI/VGA/DP/Serial)........................................................................................ 54
Removing optional I/O modules (Type-C/HDMI/VGA/DP/Serial)................................................................ 54
Installing optional I/O modules (Type-C/HDMI/VGA/DP/Serial).................................................................. 55
System board..................................................................................................................................................................... 56
Removing the system board..................................................................................................................................... 56
Installing the system board........................................................................................................................................ 61
Chapter 3: Software....................................................................................................................66
Drivers and downloads.....................................................................................................................................................66
Chapter 4: System setup............................................................................................................. 67
Boot menu........................................................................................................................................................................... 67
Navigation keys..................................................................................................................................................................67
Boot Sequence...................................................................................................................................................................68
System setup options.......................................................................................................................................................68
Updating the BIOS.............................................................................................................................................................77
Updating the BIOS in Windows................................................................................................................................ 77
Updating the BIOS in Linux and Ubuntu................................................................................................................ 77
Updating the BIOS using the USB drive in Windows.......................................................................................... 77
Updating the BIOS from the F12 One-Time boot menu.....................................................................................78
System and setup password...........................................................................................................................................79
4Contents
Assigning a system setup password....................................................................................................................... 79
Deleting or changing an existing system setup password................................................................................. 79
Chapter 5: Troubleshooting......................................................................................................... 81
SupportAssist diagnostics................................................................................................................................................81
Diagnostic LED behavior.................................................................................................................................................. 81
Recovering the operating system................................................................................................................................. 82
Updating the BIOS in Windows......................................................................................................................................83
Updating the BIOS using the USB drive in Windows............................................................................................... 83
Backup media and recovery options.............................................................................................................................83
WiFi power cycle............................................................................................................................................................... 83
Drain residual flea power (perform hard reset)......................................................................................................... 84
Chapter 6: Getting help and contacting Dell................................................................................ 85
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.
CAUTION: Exercise caution when handling Lithium-ion batteries in laptops. Swollen batteries should not be used
and should be replaced and disposed properly.
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.
1
6 Working inside your computer
NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down
instructions.
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.
Working inside your computer 7
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:
●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.
8Working inside your computer
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.
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 #6-32 3
Processor fan and heat-sink assembly #6-32 (Captive) 4
System board #6-32 11
2
10 Removing and installing components
Major components of your system
1. Side cover
Removing and installing components 11
2. Intrusion switch
3. Optical Disk Drive
4. 2.5-inch hard-disk drive assembly
5. Fan duct
6. Processor fan and heat-sink assembly
7. 3.5-inch hard-disk drive assembly
8. Memory module
9. Speaker
10. Front bezel
11. Chassis
12. System board
13. Powered Graphical processing unit
14. M.2 WLAN
15. Power Supply Unit
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. Loosen the two thumbscrews (#6-32) that secure the side cover to 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. Tighten the two thumbscrews (#6-32) to secure 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
Removing the front bezel
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 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.
Installing the front bezel
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
Removing and installing components 15
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.
Fan shroud
Removing the fan duct
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 fan duct and provide a visual representation of the removal procedure.
16 Removing and installing components
Steps
1. Press the retention tabs on both sides of the fan duct to release it.
2. Pull and remove the fan duct from the computer.
Installing the fan duct
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 fan duct and provides a visual representation of the installation procedure.
Removing and installing components 17
Steps
1. Position the fan duct to align it with the slots on the computer chassis.
2. Press the fan duct until it clicks into place.
Next steps
1. Install the side cover.
2. Follow the procedure in after working inside your computer.
Hard-drive assembly
Removing the 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.
18 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. Tilt the hard-drive assembly slightly at an angle.
4. Lift the hard-drive assembly from the computer.
NOTE: Note the orientation of the hard drive so that you can replace it correctly.
Installing the 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 19
Steps
1. Align the hard-drive assembly at an angle to the slot on the computer.
2. Press the release tabs on the hard-drive bracket and slightly align back to insert the hard-drive assembly to the slot on the
computer chassis.
3. 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.
20 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. Remove the fours (#6-32) screws that secure the hard-disk drive to the chassis.
3. Slide the hard-disk drive away from the chassis.
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 21
Steps
1. Slide and insert the 3.5-inch hard-disk drive into the hard-disk drive slot.
2. Replace the fours (#6-32) screws to secure the hard-disk drive to the chassis.
3. Route the power cable and the data cable through the routing guides 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.
Solid-state drive
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.
3. Remove the fan duct.
About this task
The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.
22 Removing and installing components
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.
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.
Removing and installing components 23
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 fan duct.
2. Install the side cover.
3. 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.
3. Remove the fan duct.
About this task
The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure.
24 Removing and installing components
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.
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 25
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.
Next steps
1. Install the fan duct.
2. Install the side cover.
3. Follow the procedure in after working inside your computer.
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.
26 Removing and installing components
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 27
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.
SD card reader (optional)
Removing the SD card reader
Prerequisites
1. Follow the procedure in before working inside your computer.
2. Remove the side cover.
3. Remove the fan duct.
4. Remove the memory module.
About this task
The following images points to the location of the SD card reader and provide a visual representation of the removal procedure.
28 Removing and installing components
Steps
1. Unroute the cables from the routing guides on the chassis.
2. Disconnect the SD card reader from its connector on the system board.
Installing the SD card reader
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 SD card reader and provides a visual representation of the installation
procedure.
Removing and installing components 29
Steps
1. Connect the SD card reader to its connector on the system board.
2. Route the cables through the routing guides on the chassis.
Next steps
1. Install the memory module.
2. Install the fan duct.
3. Install the side cover.
4. Follow the procedure in after working inside your computer.
Processor fan and heat-sink assembly
Removing the processor fan and 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.
3. Remove the fan duct.
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.
30 Removing and installing components
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 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 31
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 fan duct.
2. Install the side cover.
3. 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 fan duct.
4. Remove the 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.
32 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 33
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 heat-sink assembly.
2. Install the fan duct.
3. Install the side cover.
4. Follow the procedure in after working inside your computer.
34 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 35
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.
36 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.
Steps
1. Lift the pull tab to open the PCIe door.
2. Disconnect the power cable from the connector on the powered GPU.
3. Push and hold the securing tab on the graphics-card slot and lift the powered GPU away from the graphics-card slot.
4. Close the PCIe door.
Removing and installing components 37
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.
Steps
1. Lift the pull tab to open the PCIe door.
2. Align the powered GPU with the PCI-Express card connector on the system board.
3. Using the alignment post, connect the powered GPU in the connector and press down firmly. Ensure that the powered GPU
is firmly seated.
4. Connect the power cable to the connector on the powered GPU.
5. Close the PCIe door.
Next steps
1. Install the side cover.
38 Removing and installing components
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 fan duct.
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.
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.
Removing and installing components 39
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 fan duct.
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 fan duct.
About this task
The following images indicate the location of the wireless card and provide a visual representation of the removal procedure.
40 Removing and installing components
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.
Removing and installing components 41
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 fan duct.
2. Install the side cover.
3. Follow the procedure in after working inside your computer.
42 Removing and installing components
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. Pull the securing tab to release the slim ODD from the chassis.
3. Slide and remove the slim ODD from the ODD slot.
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.
Removing and installing components 43
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.
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.
44 Removing and installing components
Steps
1. Disconnect the speaker cable from the connector on the system board.
2. Unroute the speaker cable from the routing guides on the chassis.
3. 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.
Removing and installing components 45
Steps
1. Press and slide the speaker in the slot on the chassis until it snaps into place.
2. Route the speaker cable through the routing guide on the chassis.
3. 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 fan duct.
4. 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.
46 Removing and installing components
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.
Removing and installing components 47
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 fan duct.
3. Install the side cover.
4. 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 fan duct.
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 provide a visual representation of the removal
procedure.
48 Removing and installing components
Removing and installing components 49
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.
50 Removing and installing components
Removing and installing components 51
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 fan duct.
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.
3. Remove the fan duct.
About this task
The following image indicates the location of the intrusion switch and provides a visual representation of the removal procedure.
52 Removing and installing components
Steps
1. Disconnect the intruder cable from the connector on the system board.
2. Slide and remove the intrusion switch from the chassis.
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.
Removing and installing components 53
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 fan duct.
2. Install the side cover.
3. 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 fan duct.
About this task
The following images indicate the location of the optional I/O Modules and provide a visual representation of the removal
procedure.
54 Removing and installing components
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 55
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 fan duct
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.
56 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 fan duct.
5. Remove the memory module.
6. Remove the WLAN.
7. Remove the M.2 2230 SSD/M.2 2280 SSD.
8. Remove the coin-cell battery.
9. Remove the graphics card.
10. Remove the powered GPU.
NOTE: This step is required only if the system is configured with powered GPU.
11. Remove the speaker.
12. Remove the intrusion switch.
13. Remove the processor fan and heat-sink assembly.
14. Remove the processor.
About this task
The following image indicates the connectors on your system board.
1. Intrusion switch connector
2. Video connector
3. ATX CPU power connector
4. Memory module connector
5. Memory module connector
6. Power button connector
7. SD card reader connector
8. ATX system power connector
9. M.2 PCIe SSD connector
10. Coin-cell battery
Removing and installing components 57
11. SATA3 connector (white)
12. SATA0 connector (blue)
13. M.2 WLAN connector
14. M.2 PCIe SSD connector
15. PCIe x4 (Slot4)
16. PCIe x16 (Slot3)
17. PCIe x1 (Slot2)
18. PCIe x1 (Slot1)
19. Type-C connector
20. Processor socket
21. Keyboard and Mouse serial connector
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
58 Removing and installing components
Removing and installing components 59
Steps
1. Remove the two (#6-32) screws that secure 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.
60 Removing and installing components
4. Remove the eight (#6-32) screws that secure the system board to the chassis.
5. Remove the (#6-32) 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. Intrusion switch connector
2. Video connector
3. ATX CPU power connector
4. Memory module connector
5. Memory module connector
6. Power button connector
7. SD card reader connector
8. ATX system power connector
9. M.2 PCIe SSD connector
10. Coin-cell battery
11. SATA3 connector (white)
12. SATA0 connector (blue)
13. M.2 WLAN connector
14. M.2 PCIe SSD connector
15. PCIe x4 (Slot4)
16. PCIe x16 (Slot3)
17. PCIe x1 (Slot2)
Removing and installing components 61
18. PCIe x1 (Slot1)
19. Type-C connector
20. Processor socket
21. Keyboard and Mouse serial connector
The following images indicate the location of the system board and provide a visual representation of the installation procedure.
62 Removing and installing components
Removing and installing components 63
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 (#6-32) screw to secure the system board to the chassis.
3. Replace the eight screws (#6-32) that secure the system board to the chassis.
64 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 two (#6-32) screws to secure the front I/O-bracket to the chassis.
Next steps
1. Install the processor.
2. Install the processor fan and heat-sink assembly.
3. Install the coin-cell battery.
4. Remove the intrusion switch.
5. Remove the speaker.
6. Install the powered GPU.
NOTE: This step is required only if the system is configured with powered GPU.
7. Install the graphics card.
8. Install the M.2 2230 SSD/M.2 2280 SSD.
9. Install the WLAN.
10. Install the memory module.
11. Install the fan duct
12. Install the front bezel.
13. Install the side cover.
14. 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 65
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 000123347.
3
66 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.
4
System setup 67
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 5090 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.
68 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 69
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.
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 RAID Onoption 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.
Device Displays the SATA HDD device information of the computer.
SATA-1
70 System setup
Table 6. System setup options—Storage menu (continued)
Storage
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.
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.
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.
System setup 71
Table 8. System setup options—Connection menu (continued)
Connection
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.
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.
72 System setup
Table 10. System setup options—Security menu (continued)
Security
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.
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.
System setup 73
Table 11. System setup options—Passwords menu (continued)
Passwords
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
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.
74 System setup
Table 12. System setup options—Update, Recovery menu (continued)
Update, Recovery
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.
Dell Development Configuration
Enable Flash Updated Signature Override Enable or disable certain features to control BIOS
By default, the option is disabled.
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 75
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 Minimal 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.
76 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
Updating the BIOS in Windows
About this task
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
Steps
1. Go to www.dell.com/support.
2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search.
NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You
can also use the product ID or manually browse for your computer model.
3. Click Drivers & Downloads. Expand Find drivers.
4. Select the operating system installed on your computer.
5. In the Category drop-down list, select BIOS.
6. Select the latest version of BIOS, and click Download to download the BIOS file for your computer.
7. After the download is complete, browse the folder where you saved the BIOS update file.
8. Double-click the BIOS update file icon and follow the on-screen instructions.
For more information, see knowledge base article 000124211 at www.dell.com/support.
Updating the BIOS in Linux and Ubuntu
To update the system BIOS on a computer that is installed with Linux or Ubuntu, see the knowledge base article 000131486 at
www.dell.com/support.
Updating the BIOS using the USB drive in Windows
About this task
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
Steps
1. Follow the procedure from step 1 to step 6 in Updating the BIOS in Windows to download the latest BIOS setup program file.
System setup 77
2. Create a bootable USB drive. For more information, see the knowledge base article 000145519 at www.dell.com/support.
3. Copy the BIOS setup program file to the bootable USB drive.
4. Connect the bootable USB drive to the computer that needs the BIOS update.
5. Restart the computer and press F12 .
6. Select the USB drive from the One Time Boot Menu.
7. Type the BIOS setup program filename and press Enter.
The BIOS Update Utility appears.
8. Follow the on-screen instructions to complete the BIOS update.
Updating the BIOS from the F12 One-Time boot menu
Update your computer BIOS using the BIOS update.exe file that is copied to a FAT32 USB drive and booting from the F12
One-Time boot menu.
About this task
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
BIOS Update
You can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the F12
One-Time boot menu on the computer.
Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12
One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the
BIOS supports this BIOS update option.
NOTE: Only computers with BIOS Flash Update option in the F12 One-Time boot menu can use this function.
Updating from the One-Time boot menu
To update your BIOS from the F12 One-Time boot menu, you need the following:
●USB drive formatted to the FAT32 file system (key does not have to be bootable)
●BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive
●AC power adapter that is connected to the computer
●Functional computer battery to flash the BIOS
Perform the following steps to perform the BIOS update flash process from the F12 menu:
CAUTION: Do not turn off the computer during the BIOS update process. The computer may not boot if you turn
off your computer.
Steps
1. From a turn off state, insert the USB drive where you copied the flash into a USB port of the computer.
2. Turn on the computer and press F12 to access the One-Time Boot Menu, select BIOS Update using the mouse or arrow keys
then press Enter.
The flash BIOS menu is displayed.
3. Click Flash from file.
4. Select external USB device.
5. Select the file and double-click the flash target file, and then click Submit.
6. Click Update BIOS. The computer restarts to flash the BIOS.
7. The computer will restart after the BIOS update is completed.
78 System setup
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.
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.
System setup 79
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.
80 System setup
Troubleshooting
SupportAssist diagnostics
About this task
The SupportAssist diagnostics (previously known as ePSA diagnostics) performs a complete check of your hardware. The
SupportAssist diagnostics is embedded in the BIOS and is launched by it internally. The SupportAssist diagnostics provides a set
of options for particular devices or device groups. It allows 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 and provide extra information about the failed device(s)
●View status messages that indicate if the tests are completed successfully
●View error messages that indicate if problems were encountered during the test
NOTE: Some tests are meant for specific devices and require user interaction. Ensure that you are present in front of the
computer when the diagnostic tests are performed.
For more information, see SupportAssist Pre-Boot System Performance Check.
Diagnostic LED behavior
Table 20. Diagnostic LED behavior
Blinking pattern
Problem description Suggested resolutionAmber White
1 2 Unrecoverable SPI Flash
Failure
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.
5
Troubleshooting 81
Table 20. Diagnostic LED behavior (continued)
Blinking pattern
Problem description Suggested resolutionAmber White
●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.
4 2 CPU Power Cable Connection
Issue
Recovering the operating system
When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell
SupportAssist OS Recovery.
Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows operating
system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating
system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its
factory state.
You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their
primary operating system due to software or hardware failures.
For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at
www.dell.com/serviceabilitytools. Click SupportAssist and then, click SupportAssist OS Recovery.
82 Troubleshooting
Updating the BIOS in Windows
Steps
1. Go to www.dell.com/support.
2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search.
NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You
can also use the product ID or manually browse for your computer model.
3. Click Drivers & Downloads. Expand Find drivers.
4. Select the operating system installed on your computer.
5. In the Category drop-down list, select BIOS.
6. Select the latest version of BIOS, and click Download to download the BIOS file for your computer.
7. After the download is complete, browse the folder where you saved the BIOS update file.
8. Double-click the BIOS update file icon and follow the on-screen instructions.
For more information, see knowledge base article 000124211 at www.dell.com/support.
Updating the BIOS using the USB drive in Windows
Steps
1. Follow the procedure from step 1 to step 6 in Updating the BIOS in Windows to download the latest BIOS setup program file.
2. Create a bootable USB drive. For more information, see the knowledge base article 000145519 at www.dell.com/support.
3. Copy the BIOS setup program file to the bootable USB drive.
4. Connect the bootable USB drive to the computer that needs the BIOS update.
5. Restart the computer and press F12 .
6. Select the USB drive from the One Time Boot Menu.
7. Type the BIOS setup program filename and press Enter.
The BIOS Update Utility appears.
8. Follow the on-screen instructions to complete the BIOS update.
Backup media and recovery options
It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes
multiple options for recovering Windows operating system on your Dell PC. For more information. see Dell Windows Backup
Media and Recovery Options.
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.
Troubleshooting 83
6. Turn on the modem.
7. Turn on your computer.
Drain residual flea power (perform hard reset)
About this task
Flea power is the residual static electricity that remains in the computer even after it has been powered off and the battery is
removed.
For your safety, and to protect the sensitive electronic components in your computer, you are requested to drain residual flea
power before removing or replacing any components in your computer.
Draining residual flea power, also known as a performing a "hard reset", is also a common troubleshooting step if your computer
does not power on or boot into the operating system.
To drain residual flea power (perform a hard reset)
Steps
1. Turn off your computer.
2. Disconnect the power adapter from your computer.
3. Remove the base cover.
4. Remove the battery.
5. Press and hold the power button for 20 seconds to drain the flea power.
6. Install the battery.
7. Install the base cover.
8. Connect the power adapter to your computer.
9. Turn on your computer.
NOTE: For more information about performing a hard reset, see the knowledge base article 000130881 at
www.dell.com/support.
84 Troubleshooting
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 21. 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.
6
Getting help and contacting Dell 85