Table of Contents
- Inspiron 3910 Service Manual
- Contents
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of Inspiron 3910
- Left-side cover
- Front cover
- Optical drive
- Optical-drive bezel
- Hard drive
- Power button
- Graphics card
- Memory
- Solid-state drive
- Wireless card
- Coin-cell battery
- Antenna modules
- Media-card reader
- Power-supply unit
- Fan shroud
- Processor fan and heat-sink assembly
- Processor
- System board
- Drivers and downloads
- System setup
- Troubleshooting
- Getting help and contacting Dell
DELL 3910 User Manual
Displayed below is the user manual for 3910 by DELL which is a product in the PCs/Workstations category. This manual has pages.
Related Manuals
Inspiron 3910
Service Manual
Regulatory Model: D32M
Regulatory Type: D32M002
December 2021
Rev. A00
Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid
the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 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
Before working inside your computer.............................................................................................................................6
Safety instructions.............................................................................................................................................................. 6
Electrostatic discharge—ESD protection......................................................................................................................7
ESD field service kit ........................................................................................................................................................... 7
Transporting sensitive components................................................................................................................................ 8
After working inside your computer................................................................................................................................9
Chapter 2: Removing and installing components.......................................................................... 10
Recommended tools..........................................................................................................................................................10
Screw list............................................................................................................................................................................. 10
Major components of Inspiron 3910............................................................................................................................... 11
Left-side cover................................................................................................................................................................... 13
Removing the left-side cover....................................................................................................................................13
Installing the left-side cover...................................................................................................................................... 14
Front cover.......................................................................................................................................................................... 14
Removing the front cover..........................................................................................................................................14
Installing the front cover............................................................................................................................................ 15
Optical drive........................................................................................................................................................................ 16
Removing the optical drive........................................................................................................................................ 16
Installing the optical drive...........................................................................................................................................17
Optical-drive bezel.............................................................................................................................................................19
Removing the optical-drive bezel.............................................................................................................................19
Installing the optical-drive bezel.............................................................................................................................. 20
Hard drive............................................................................................................................................................................20
Removing the hard drive........................................................................................................................................... 20
Installing the hard drive.............................................................................................................................................. 21
Power button..................................................................................................................................................................... 23
Removing the power button.....................................................................................................................................23
Installing the power button....................................................................................................................................... 23
Graphics card..................................................................................................................................................................... 24
Removing the graphics card..................................................................................................................................... 24
Installing the graphics card....................................................................................................................................... 25
Memory................................................................................................................................................................................ 27
Removing the memory............................................................................................................................................... 27
Installing the memory................................................................................................................................................. 28
Solid-state drive................................................................................................................................................................ 29
Removing the solid-state drive................................................................................................................................ 29
Installing the solid-state drive.................................................................................................................................. 30
Wireless card.......................................................................................................................................................................31
Removing the wireless card.......................................................................................................................................31
Installing the wireless card........................................................................................................................................ 32
Coin-cell battery................................................................................................................................................................ 33
Removing the coin-cell battery................................................................................................................................33
Contents
Contents 3
Installing the coin-cell battery.................................................................................................................................. 34
Antenna modules............................................................................................................................................................... 34
Removing the antenna modules...............................................................................................................................34
Installing the antenna modules.................................................................................................................................36
Media-card reader.............................................................................................................................................................37
Removing the media-card reader............................................................................................................................ 37
Installing the media-card reader.............................................................................................................................. 38
Power-supply unit............................................................................................................................................................. 39
Removing the power-supply unit.............................................................................................................................39
Installing the power-supply unit................................................................................................................................41
Fan shroud.......................................................................................................................................................................... 42
Removing the fan shroud.......................................................................................................................................... 42
Installing the fan shroud............................................................................................................................................ 43
Processor fan and heat-sink assembly.........................................................................................................................44
Removing the processor fan and heat-sink assembly........................................................................................ 44
Installing the processor fan and heat-sink assembly.......................................................................................... 45
Processor............................................................................................................................................................................ 46
Removing the processor............................................................................................................................................46
Installing the processor.............................................................................................................................................. 47
System board..................................................................................................................................................................... 48
Removing the system board..................................................................................................................................... 48
Installing the system board........................................................................................................................................ 51
Chapter 3: Drivers and downloads............................................................................................... 56
Chapter 4: System setup............................................................................................................. 57
BIOS overview....................................................................................................................................................................57
Entering BIOS setup program........................................................................................................................................ 57
Navigation keys..................................................................................................................................................................57
Boot Sequence...................................................................................................................................................................58
One time boot menu.........................................................................................................................................................58
System setup options.......................................................................................................................................................58
System and setup password...........................................................................................................................................68
Assigning a system setup password....................................................................................................................... 68
Deleting or changing an existing system setup password.................................................................................69
Real Time Clock (RTC) reset....................................................................................................................................69
Clearing BIOS (System Setup) and System passwords.....................................................................................70
Updating the BIOS............................................................................................................................................................ 70
Updating the BIOS in Windows................................................................................................................................70
Updating the BIOS using the USB drive in Windows..........................................................................................70
Updating the BIOS from the F12 One-Time boot menu......................................................................................71
Chapter 5: Troubleshooting......................................................................................................... 72
Locate the Service Tag or Express Service Code of your Dell computer ..............................................72
SupportAssist diagnostics............................................................................................................................................... 72
System diagnostic lights.................................................................................................................................................. 72
Recovering the operating system..................................................................................................................................73
WiFi power cycle................................................................................................................................................................73
Drain residual flea power (perform hard reset)......................................................................................................... 74
4Contents
Working inside your computer
Before working inside your computer
About this task
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Steps
1. Save and close all open files and exit all open applications.
2. Shut down your computer. Click Start > Power > Shut down.
NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down
instructions.
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 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.
1
6 Working inside your computer
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.
Electrostatic discharge—ESD protection
ESD is a major concern when you handle electronic components, especially sensitive components such as expansion cards,
processors, memory DIMMs, and system boards. Very slight charges can damage circuits in ways that may not be obvious, such
as intermittent problems or a shortened product life span. As the industry pushes for lower power requirements and increased
density, ESD protection is an increasing concern.
Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than
in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.
Two recognized types of ESD damage are catastrophic and intermittent failures.
●Catastrophic – Catastrophic failures represent approximately 20 percent of ESD-related failures. The damage causes
an immediate and complete loss of device functionality. An example of catastrophic failure is a memory DIMM that has
received a static shock and immediately generates a "No POST/No Video" symptom with a beep code emitted for missing or
nonfunctional memory.
●Intermittent – Intermittent failures represent approximately 80 percent of ESD-related failures. The high rate of
intermittent failures means that most of the time when damage occurs, it is not immediately recognizable. The DIMM
receives a static shock, but the tracing is merely weakened and does not immediately produce outward symptoms related to
the damage. The weakened trace may take weeks or months to melt, and in the meantime may cause degradation of memory
integrity, intermittent memory errors, etc.
The more difficult type of damage to recognize and troubleshoot is the intermittent (also called latent or "walking wounded")
failure.
Perform the following steps to prevent ESD damage:
●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
Working inside your computer 7
use wireless wrist straps. Always be aware that the internal wires of a wrist strap are prone to damage from normal wear
and tear, and must be checked regularly with a wrist strap tester in order to avoid accidental ESD hardware damage. It is
recommended to test the wrist strap and bonding wire at least once per week.
●ESD Wrist Strap Tester – The wires inside of an ESD strap are prone to damage over time. When using an unmonitored
kit, it is a best practice to regularly test the strap prior to each service call, and at a minimum, test once per week. A
wrist strap tester is the best method for doing this test. If you do not have your own wrist strap tester, check with your
regional office to find out if they have one. To perform the test, plug the wrist-strap's bonding-wire into the tester while it is
strapped to your wrist and push the button to test. A green LED is lit if the test is successful; a red LED is lit and an alarm
sounds if the test fails.
●Insulator Elements – It is critical to keep ESD sensitive devices, such as plastic heat sink casings, away from internal parts
that are insulators and often highly charged.
●Working Environment – Before deploying the ESD Field Service kit, assess the situation at the customer location. For
example, deploying the kit for a server environment is different than for a desktop or portable environment. Servers are
typically installed in a rack within a data center; desktops or portables are typically placed on office desks or cubicles. Always
look for a large open flat work area that is free of clutter and large enough to deploy the ESD kit with additional space to
accommodate the type of system that is being repaired. The workspace should also be free of insulators that can cause an
ESD event. On the work area, insulators such as Styrofoam and other plastics should always be moved at least 12 inches or
30 centimeters away from sensitive parts before physically handling any hardware components
●ESD Packaging – All ESD-sensitive devices must be shipped and received in static-safe packaging. Metal, static-shielded
bags are preferred. However, you should always return the damaged part using the same ESD bag and packaging that the
new part arrived in. The ESD bag should be folded over and taped shut and all the same foam packing material should be
used in the original box that the new part arrived in. ESD-sensitive devices should be removed from packaging only at an
ESD-protected work surface, and parts should never be placed on top of the ESD bag because only the inside of the bag is
shielded. Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag.
●Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts
to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.
ESD protection summary
It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static
mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all
insulator parts while performing service and that they use anti-static bags for transporting sensitive components.
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.
Lifting equipment
Adhere to the following guidelines when lifting heavy weight equipment:
CAUTION: Do not lift greater than 50 pounds. Always obtain additional resources or use a mechanical lifting
device.
1. Get a firm balanced footing. Keep your feet apart for a stable base, and point your toes out.
2. Tighten stomach muscles. Abdominal muscles support your spine when you lift, offsetting the force of the load.
3. Lift with your legs, not your back.
4. Keep the load close. The closer it is to your spine, the less force it exerts on your back.
5. Keep your back upright, whether lifting or setting down the load. Do not add the weight of your body to the load. Avoid
twisting your body and back.
6. Follow the same techniques in reverse to set the load down.
8Working inside your computer
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 may require the following tools:
●Philips screwdriver #1 and #2
●Plastic scribe
Screw list
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 surfaces when
replacing a component.
NOTE: Screw color may vary with the configuration ordered.
Table 1. Screw list
Component Secured to Screw type Quantity Screw image
Left-side cover Chassis 6-32 2
Solid-state drive System board M2x3.5 1
Wireless card System board M2x4 1
Hard drive Chassis 6-32, pan head 4
VGA-connector cover Chassis 4-40 (captive) 2
NOTE: Only
on computers
shipped with 12th
Generation Intel
Core i5F and
12th Generation
Intel Core i7F
processors.
Power-supply unit Chassis #6-32, hex head 3
2
10 Removing and installing components
Table 1. Screw list (continued)
Component Secured to Screw type Quantity Screw image
Optical drive Chassis M2x2 2
Media-card reader Chassis 6-32, pan head 1
Front I/O-bracket Chassis 6-32, pan head 2
Processor fan and heat-
sink assembly
System board Captive (M3) 4
System board Chassis 6-32, hex head 8
Major components of Inspiron 3910
The following image shows the major components of Inspiron 3910.
Removing and installing components 11
1. left-side cover
2. coin-cell battery
3. optical drive
4. 2280 solid-state drive
5. 2230 solid-state drive
6. media-card reader
7. system board
8. power-supply unit
9. chassis
10. graphics card
11. hard drive
12. fan and heat-sink assembly
13. fan shroud
14. wireless card
15. processor
16. memory module
12 Removing and installing components
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.
Left-side cover
Removing the left-side cover
Prerequisites
1. Follow the procedure in Before working inside your computer.
About this task
The following image(s) indicate the location of the left-side cover and provides a visual representation of the removal
procedure.
Steps
1. Remove the two screws (6-32) that secure the left-side cover to the chassis.
2. Holding the tab on the left-side cover firmly, slide and remove the left-side cover from the chassis.
Removing and installing components 13
Installing the left-side cover
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the left-side cover and provides a visual representation of the installation
procedure.
Steps
1. Holding the left-side cover firmly on both sides, slide it into the chassis towards the front of the computer.
2. Replace the two screws (6-32) that secure the left-side cover to the chassis.
Next steps
1. Follow the procedure in After working inside your computer.
Front cover
Removing the front cover
Prerequisites
1. Follow the procedure in Before working inside your computer.
14 Removing and installing components
2. Remove the left-side cover.
About this task
The following image(s) indicate the location of the front cover and provides a visual representation of the removal procedure.
Steps
1. Gently pry and release the tabs that secure the front-cover to the chassis.
2. Open the front cover and lift it away from the chassis.
Installing the front cover
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the front cover and provides a visual representation of the installation procedure.
Removing and installing components 15
Steps
1. Align and insert the front-cover tabs into the slots on right side of the chassis.
2. Rotate the front cover towards the chassis and snap the tabs into place.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
Optical drive
Removing the optical drive
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
3. Remove the front cover.
About this task
NOTE: Depending on the configuration ordered, your computer may not have an optical drive installed.
The following image(s) indicate the location of the optical drive and provides a visual representation of the removal procedure.
16 Removing and installing components
Steps
1. Place the computer on its side with the left-side facing up.
2. Disconnect the power and data cables from the optical drive.
3. Remove the two screws (M2x2) that secure the optical drive to the optical-drive cage.
4. Pull to slide out the optical drive through the front of the computer.
Installing the optical drive
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the optical drive and provides a visual representation of the installation
procedure.
Removing and installing components 17
Steps
1. Slide the optical drive into the optical-drive cage through the front of the computer.
2. Replace the two screws (M2x2) that secure the optical drive to the optical-drive cage.
3. Connect the power and data cables to the optical drive.
4. Place the computer in an upright position.
Next steps
1. Install the front cover.
2. Install the left-side cover.
3. Follow the procedure in After working inside your computer.
18 Removing and installing components
Optical-drive bezel
Removing the optical-drive bezel
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
3. Remove the front cover.
4. Remove the optical drive.
About this task
NOTE: Depending on the configuration ordered, your computer may not have an optical drive installed.
The following image(s) indicate the location of the optical-drive bezel and provides a visual representation of the removal
procedure.
Steps
1. Insert an unfolded paperclip into the emergency eject pinhole of the optical drive to open the drive tray.
2. Using a plastic scribe press down the tab that secures the optical-drive bezel to the optical drive.
Removing and installing components 19
3. Lift the optical-drive bezel away from the optical drive.
Installing the optical-drive bezel
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the optical-drive bezel and provides a visual representation of the installation
procedure.
Steps
1. Align the tabs on the optical-drive bezel with slots on the optical drive and snap it in place.
2. Slide the optical-drive tray into the optical drive and close it.
Next steps
1. Install the optical drive.
2. Install the front cover.
3. Install the left-side cover.
4. Follow the procedure in After working inside your computer.
Hard drive
Removing the hard drive
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
20 Removing and installing components
About this task
NOTE: Depending on the configuration ordered you may have a 2.5-inch or 3.5-inch hard drive installed in your computer.
The following image(s) indicate the location of the hard drive and provides a visual representation of the removal procedure.
Steps
1. Place the computer on its side with the left side facing up.
2. Holding the hard-drive in place, remove the four screws (6-32) that secure the hard drive to the chasis.
3. Disconnect the data and power cables from the hard drive.
4. Lift the hard drive off the chassis.
Installing the hard drive
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
NOTE: You may install either a 2.5-inch or 3.5-inch drive on this computer.
Removing and installing components 21
The following image(s) indicate the location of the hard drive and provides a visual representation of the installation procedure.
Steps
1. Connect the data cable and power cable to the hard drive.
2. Place the hard drive onto the chassis and align the screw holes of the hard drive with the screw holes of the chassis.
3. Replace the four screws (6-32) that secure the hard drive to the chassis.
4. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
22 Removing and installing components
Power button
Removing the power button
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
3. Remove the front cover.
4. Remove the hard drive.
About this task
The following image(s) indicate the location of the power button and provides a visual representation of the removal procedure.
Steps
1. Place the computer on its side with the left side facing up.
2. Disconnect the power-button cable from the system board.
3. Press the release tabs on the power button to release it from the slot on the chassis.
4. Route the power button along with its cable through the slot on the chassis.
5. Remove the power button and its cable from the front of the chassis.
Installing the power button
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
Removing and installing components 23
About this task
The following image(s) indicate the location of the power button and provides a visual representation of the installation
procedure.
Steps
1. Slide the power-button cable through the slot on the front of the chassis.
2. While pressing the tabs on the power button insert it through the slot on the chassis and then secure it into place.
3. Connect the power-button cable to the system board.
4. Place the computer in an upright position.
Next steps
1. Install the hard drive.
2. Install the front cover.
3. Install the left-side cover.
4. Follow the procedure in After working inside your computer.
Graphics card
Removing the graphics card
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
About this task
NOTE: Depending on the configuration ordered, your computer may not have a discrete graphics card installed.
The following image(s) indicate the location of the graphics card and provides a visual representation of the removal procedure.
24 Removing and installing components
Steps
1. Place the computer on its side with the left side facing up.
2. Lift the tab to open the card-retention bracket.
3. Disconnect the graphics-card power cable from the graphics card.
4. Push the securing tab on the PCIe x16 slot away from the graphics card.
5. Lift the graphics card off the system board.
Installing the graphics card
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
Removing and installing components 25
About this task
The following image(s) indicate the location of the graphics card and provides a visual representation of the installation
procedure.
Steps
1. Align the graphics card with the PCIe x16 slot on the system board.
2. Place the card into the slot and press down firmly until the graphics card snaps into place.
3. Connect the graphics-card power cable to the graphics card.
4. Rotate the card retention bracket towards the chassis until it snaps into place.
5. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
26 Removing and installing components
Memory
Removing the memory
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
About this task
NOTE: This computer may have up to two memory modules installed.
The following image(s) indicate the location of the memory and provides a visual representation of the removal procedure.
Steps
1. Place the computer on its side with the left side facing up.
2. Carefully spread apart the securing-clips on each end of the memory-module slot.
3. Grasp the memory module near the securing clip, and then gently ease the memory module out of the memory-module slot.
CAUTION: To prevent damage to the memory module, hold the memory module by the edges. Do not touch
the components on the memory module.
NOTE: Repeat step 2 to step 3 to remove any other memory modules installed in your computer.
NOTE: Note the slot and the orientation of the memory module in order to replace it in the correct slot.
NOTE: If the memory module is difficult to remove, gently ease the memory module back and forth to remove it from
the slot.
Removing and installing components 27
Installing the memory
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
NOTE: Up to two memory modules may be installed into this computer.
The following image(s) indicate the location of the memory and provides a visual representation of the installation procedure.
Steps
1. Align the notch on the memory module with the tab on the memory-module slot.
2. Insert the memory module into the memory-module slot.
3. Press down on the memory module until the memory module snaps into position and the securing clip locks in place.
CAUTION: To prevent damage to the memory module, hold the memory module by the edges. Do not touch
the components on the memory module.
NOTE: The securing clips return to the locked position. If you do not hear the click, remove the memory module and
reinstall it.
NOTE: If the memory module is difficult to remove, gently ease the memory module back and forth to remove it from
the slot.
4. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
28 Removing and installing components
Solid-state drive
Removing the solid-state drive
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
About this task
NOTE: Depending on the configuration ordered, your computer may have a M.2 2230 or 2280 solid-state drive installed in
the M.2 solid-state drive slot on the system board.
The following image(s) indicate the location of the solid-state drive and provides a visual representation of the removal
procedure.
Steps
1. Place the computer on its side with the left side facing up.
Removing and installing components 29
2. Remove the screw (M2x3.5) that secures the solid-state drive to the system board.
3. Slide and lift the solid-state drive from the M.2 card slot on the system board.
Installing the solid-state drive
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
NOTE: You may install either a M.2 2230 or 2280 solid-state drive into the M.2 solid-state drive slot on the system board.
The following image(s) indicate the location of the solid-state drive and provides a visual representation of the installation
procedure.
Steps
1. Align the notch on the solid-state drive with the tab on the M.2 card slot.
2. Slide the solid-state drive into the M.2 card slot on the system board.
30 Removing and installing components
3. Replace the screw (M2x3.5) that secures the solid-state drive to the system board.
4. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
Wireless card
Removing the wireless card
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
About this task
The following image(s) indicate the location of the wireless card and provides a visual representation of the removal procedure.
Removing and installing components 31
Steps
1. Place the computer on its side with the left side facing up.
2. Remove the screw (M2x4) that secures the wireless card to the system board.
3. Slide and lift the wireless-card bracket off the wireless card.
4. Disconnect the antenna cables from the wireless card.
5. Slide and remove the wireless card at an angle from the wireless-card slot.
Installing the wireless card
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the wireless card and provides a visual representation of the installation
procedure.
Steps
1. Connect the antenna cables to the wireless card.
32 Removing and installing components
Table 2. Antenna-cable color scheme
Connectors on the
wireless card
Antenna-cable color Silkscreen marking
Main White MAIN △ (white triangle)
Auxiliary Black AUX ▲ (black triangle)
2. Slide and place the wireless-card bracket on the wireless card.
3. Align the notch on the wireless card with the tab on the wireless-card slot.
4. Slide the wireless card at an angle into the wireless-card slot.
5. Replace the screw (M2x4) that secures the wireless card to the system board.
6. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
Coin-cell battery
Removing the coin-cell battery
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
About this task
The following image(s) indicate the location of the coin-cell battery and provides a visual representation of the removal
procedure.
Removing and installing components 33
Steps
1. Place the computer on its side with the left side facing up.
2. Using a plastic scribe, push the coin-cell battery securing-clip on the coin-cell battery socket to release the coin-cell battery.
3. Remove the coin-cell battery from the system board.
Installing the coin-cell battery
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the coin-cell battery and provides a visual representation of the installation
procedure.
Steps
1. Insert the coin-cell battery into the socket with the positive side (+) label facing up and snap the battery in the socket.
2. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
Antenna modules
Removing the antenna modules
Prerequisites
1. Follow the procedure in Before working inside your computer.
34 Removing and installing components
2. Remove the left-side cover.
3. Remove the front cover.
4. Remove the wireless card.
About this task
The following image(s) indicate the location of the antenna modules and provides a visual representation of the removal
procedure.
Steps
1. Loosen the two captive screws (M3) that secure the antenna modules to the chassis
2. Remove the antenna cables through the routing guide on the chassis and route the antenna cables through the slot on the
chassis.
3. Lift the antenna modules along with its cables off the chassis.
Removing and installing components 35
Installing the antenna modules
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the antenna modules and provides a visual representation of the installation
procedure.
Steps
1. Place the antenna modules on the chassis.
2. Align the captive screws on the antenna modules with the screw holes on the chassis.
3. Tighten the two captive screws (M3) that secure the antenna modules to the chassis.
4. Route the antenna cables through the slot on the chassis and route the antenna cables through the routing guides on the
chassis.
36 Removing and installing components
Next steps
1. Install the wireless card.
2. Install the front cover.
3. Install the left-side cover.
4. Follow the procedure in After working inside your computer.
Media-card reader
Removing the media-card reader
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
3. Remove the front cover.
About this task
The following image(s) indicate the location of the media-card reader and provides a visual representation of the removal
procedure.
Removing and installing components 37
Steps
1. Remove the screw (6-32) that secures the media-card reader bracket to the chassis.
2. Using the screw and the screw-driver push against the media-card reader to release it from the chassis.
3. Slide and lift the media-card reader and its bracket off the system board.
Installing the media-card reader
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the media-card reader and provides a visual representation of the installation
procedure.
Steps
1. Place and slide the media-card reader onto its slot on the system board.
2. Align the screw hole on the media-card reader bracket with the screw hole on the chassis.
3. Replace the screw (6-32) that secures the media-card reader bracket to the chassis.
38 Removing and installing components
Next steps
1. Install the front cover.
2. Install the left-side cover.
3. Follow the procedure in After working inside your computer.
Power-supply unit
Removing the power-supply unit
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
About this task
The following image(s) indicate the location of the power-supply unit and provides a visual representation of the removal
procedure.
Removing and installing components 39
Steps
1. Place the computer on its side with the left side facing up.
2. Disconnect the graphics-card power cable from the graphics card.
3. Press the securing clip and disconnect the processor-power cable from the system board.
4. Press the securing clip and disconnect the system-board power cable from the system board.
5. Remove the power-supply unit cables from the routing guides on the chassis.
6. Remove the three screws (#6-32) that secure the power-supply unit to the chassis.
7. Slide and lift the power-supply unit off the chassis.
40 Removing and installing components
Installing the power-supply unit
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the power-supply unit and provides a visual representation of the installation
procedure.
Steps
1. Place and slide the tabs on the power-supply unit into the latches on the chassis.
2. Align the screw holes on the power-supply unit to the screw holes on the chassis.
3. Replace the three screws (#6-32) that secure the power-supply unit to the chassis.
Removing and installing components 41
4. Route the power-supply unit cables through the routing guides on the chassis.
5. Connect the system-board power cable to the system board.
6. Connect the processor-power cable to the system board.
7. Connect the graphics-card power cable to the graphics card.
8. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. Follow the procedure in After working inside your computer.
Fan shroud
Removing the fan shroud
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the left-side cover.
About this task
The following image(s) indicate the location of the fan shroud and provides a visual representation of the removal procedure.
42 Removing and installing components
Steps
1. Place the computer on its side with the left side facing up.
2. Press on the securing clips to release the fan shroud from the fan and heat-sink assembly.
3. Lift the fan shroud off the fan and heat-sink assembly.
Installing the fan shroud
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the fan shroud and provides a visual representation of the installation procedure.
Removing and installing components 43
Steps
1. Place the fan shroud on the fan and heat-sink assembly.
2. Press the fan shroud against the fan and heat sink assembly to snap the fan shroud in place.
3. Place the computer in an upright position.
Next steps
1. Install the left-side cover.
2. 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.
2. Remove the left-side cover.
44 Removing and installing components
3. Remove the fan shroud.
About this task
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.
The following image(s) indicate the location of the processor fan and heat-sink assembly and provides a visual representation of
the removal procedure.
Steps
1. Disconnect the fan cable from the system board.
2. In a reverse sequential order (4>3>2>1) loosen the four captive screws (M3) that secure the processor fan and heat-sink
assembly to the system board.
3. Lift the processor fan and heat-sink assembly from the system board.
Installing the processor fan and heat-sink assembly
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
NOTE: If either the processor or the fan and heat-sink assembly is replaced, use the thermal grease provided in the kit to
ensure that thermal conductivity is achieved.
Removing and installing components 45
The following image(s) indicate the location of the processor fan and heat-sink assembly and provides a visual representation of
the installation procedure.
Steps
1. Gently place the processor fan and heat-sink assembly on the processor.
2. Align the screw holes on the processor fan and heat-sink assembly with the screw holes on the system board.
3. In sequential order (1>2>3>4) tighten the four captive screws that secure the processor fan and heat-sink assembly to the
system board.
4. Connect the fan cable to the system board.
Next steps
1. Install the fan shroud.
2. Install the left-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 left-side cover.
3. Remove the fan shroud.
4. Remove the processor fan and heat-sink assembly.
46 Removing and installing components
About this task
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.
The following image(s) indicate the location of the processor and provides a visual representation of the removal procedure.
Steps
1. Press the release lever down and then push it away from the processor to release it from the securing tab.
2. Extend the release lever completely and open 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 process.
About this task
The following image(s) indicate the location of the processor and provides a visual representation of the installation procedure.
Removing and installing components 47
Steps
1. Ensure that the release lever and the processor cover are fully extended in the open position.
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.
2. Align the notches on the processor with the tabs on the processor socket and place the processor in the processor socket.
CAUTION: Ensure the tabs on the processor cover are placed under the notch of the release lever.
3. Close the processor cover, pivot the release lever down, and place it under the tab on the processor socket.
Next steps
1. Install the processor fan and heat-sink assembly.
2. Install the fan shroud.
3. Install the left-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.
2. Remove the left-side cover.
3. Remove the front cover.
4. Remove the memory.
5. Remove the solid-state drive.
6. Remove the hard drive.
7. Remove the graphics card.
8. Remove the wireless card.
9. Remove the coin-cell battery.
10. Remove the media-card reader.
11. Remove the fan shroud.
48 Removing and installing components
12. Remove the fan and heat-sink assembly.
13. Remove the processor.
About this task
The following image indicates the slots and connectors on your system board.
1. power-button cable connector
2. media-card reader cable connector
3. system-board power cable connector
4. optical-drive data cable connector (SATA 3)
5. hard-drive power cable connector
6. hard-drive data cable connector (SATA 1)
7. M.2 2230 wireless-card slot
8. hard-drive data cable connector (SATA 0, boot drive)
9. memory-module slot (DIMM 3)
10. memory-module slot (DIMM 1)
11. M.2 2230/2280 solid-state drive slot
Removing and installing components 49
12. PCIe x16 slot (SLOT 3)
13. PCIe x1 slot (SLOT 2)
14. processor-power cable connector
15. processor socket
16. coin-cell battery socket
The following image(s) indicate the location of the system board and provides a visual representation of the removal procedure.
50 Removing and installing components
Steps
1. Remove the two screws (6-32) that secure the front I/O-bracket to the chassis.
2. Remove and lift the front I/O-bracket from the chassis.
3. Disconnect all the cables that are connected to the system board.
●processer-power cable
●system-board power cable
●optical-drive data cable
●optical-drive power cable
4. Remove the eight screws (6-32) that secure the system board to the chassis.
5. Lift the system board at an angle and remove it from the chassis.
Installing the system board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image indicates the slots and connectors on your system board.
Removing and installing components 51
1. power-button cable connector
2. media-card reader cable connector
3. system-board power cable connector
4. optical-drive data cable connector (SATA 3)
5. hard-drive power cable connector
6. hard-drive data cable connector (SATA 1)
7. M.2 2230 wireless-card slot
8. hard-drive data cable connector (SATA 0, boot drive)
9. memory-module slot (DIMM 3)
10. memory-module slot (DIMM 1)
11. M.2 2230/2280 solid-state drive slot
12. PCIe x16 slot (SLOT 3)
13. PCIe x1 slot (SLOT 2)
14. processor-power cable connector
15. processor socket
16. coin-cell battery socket
52 Removing and installing components
The following image(s) indicate the location of the system board and provides a visual representation of the installation
procedure.
Removing and installing components 53
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 eight screws (6-32) that secure the system board to the chassis.
3. Route and connect all the cables that you disconnected from the system board.
●processer-power cable
●system-board power cable
●optical-drive data cable
●optical-drive power cable
4. Place and align the front I/O-bracket with I/O slot on the chassis.
5. Replace the two screws (6-32) that 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 fan shroud.
4. Install the media-card reader.
5. Install the coin-cell battery.
6. Install the wireless card.
54 Removing and installing components
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: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed.
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.
BIOS overview
The BIOS manages data flow between the computer's operating system and attached devices such as hard disk, video adapter,
keyboard, mouse, and printer.
Entering BIOS setup program
About this task
Turn on (or restart) your computer and press F2 immediately.
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.
Table 3. Navigation keys
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.
NOTE: For the standard graphics browser only.
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 57
Boot Sequence
Boot Sequence allows 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 (if available)
NOTE: XXX denotes the SATA drive number.
●Optical Drive (if available)
●SATA Hard Drive (if available)
●Diagnostics
The boot sequence screen also displays the option to access the System Setup screen.
One time boot menu
To enter one time boot menu, turn on your computer, and then press F12 immediately.
NOTE: It is recommended to shutdown the computer if it is on.
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 (if available)
NOTE: XXX denotes the SATA drive number.
●Optical Drive (if available)
●SATA Hard Drive (if available)
●Diagnostics
The boot sequence screen also displays the option to access the System Setup screen.
System setup options
NOTE: Depending on this computer and its installed devices, the items listed in this section may or may not appear.
Table 4. System setup options—System information menu
Overview
Inspiron 3910
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.
PROCESSOR
58 System setup
Table 4. System setup options—System information menu (continued)
Overview
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 L2 Cache size.
Microcode Version Displays the microcode version of the processor.
Intel® Hyper-Threading Capable Displays whether the processor is Hyper-Threading (HT) capable.
64-Bit Technology Displays whether 64-bit technology is used.
MEMORY
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 used for the memory.
DIMM 1 Size Displays the DIMM 1 memory size.
DIMM 2 Size Displays the DIMM 2 memory size.
DEVICES
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 LOM MAC address of the computer.
Slot 2 Displays the status of the expansion slot (Slot 2) of the computer.
Slot 3 Displays the status of the expansion slot (Slot 3) of the computer.
Table 5. System setup options—Boot Configuration menu
Boot Configuration
Boot Sequence
Boot Mode: UEFI only Displays the boot mode of this computer.
Boot Sequence Specifies the order that the BIOS searches the list of devices to find an
operating system to boot.
By default, UEFI Hard Drive 2 is selected
By default, Windows Boot Manager is selected
By default, UEFI Hard Drive is selected
System setup 59
Table 5. System setup options—Boot Configuration menu (continued)
Boot Configuration
By default, ONBOARD NIC (IPV4) is selected
By default, ONBOARD NIC (IPV6) is selected
By default, UEFI HTTPS Boost is selected
Secure Boot
Enable Secure Boot Enables secure boot using only validated boot software.
Default: OFF
Secure Boot Mode Modifies the behavior of Secure Boot to allow evaluation or enforcement of
UEFI driver signatures. Deployed Mode should be selected for normal operation
of Secure Boot.
By default, Deployed Mode is selected.
Expert Key Management
Enable Custom Mode Allows the PK, KEK, db, and dbx security key databases to be modified.
Default: OFF
NOTE: If Custom Mode is not enabled, any changes made with respect to
the keys will not be saved.
Custom Mode Key Management Allows for selection of key database.
●Save to File will save the key to a user-selected file.
●Replace from File will replace the current key with a key from a user-
selected file.
●Append from File will add a key to the current database from a user-
selected file.
●Delete will delete the selected key.
●Reset All Keys will reset all four keys to their default settings.
By default, PK security key database is selected.
By default, Save to File is selected.
Table 6. System setup options—Integrated Devices menu
Integrated Devices
Date/Time
Date Sets the computer date in MM/DD/YYYY format. Changes to the date take
effect immediately.
Time Sets the computer time in HH/MM/SS 24-hour format. You can switch
between 12-hour and 24-hour clock. Changes to the time take effect
immediately.
Camera
Enable Camera Enables or disables the camera.
By default, Enable Camera is selected.
Audio Enables or disables all integrated audio controller.
Default: ON
Enable Microphone Enables or disables microphone.
By default, Enable Microphone is selected.
Enable Internal Speaker Enables or disables internal speaker.
By default, Enable Internal Speaker is selected.
60 System setup
Table 6. System setup options—Integrated Devices menu (continued)
Integrated Devices
USB Configuration Enables or disables booting from USB mass storage devices such as external
hard drive, optical drive, and USB drive.
By default, Enable Front USB Ports is selected.
By default, Enable Rear USB Ports is selected.
By default, Enable USB Boot Support is selected.
Front USB Configuration Enables or disables individual USB ports.
By default, Front Port 1 (Bottom Left)* is selected.
By default, Front Port 2 (Bottom Right)* is selected.
By default, Front Port 3 (Top Left) is selected.
By default, Front Port 5 (Top Right) is selected.
* Denotes a USB 3.0-capable port
NOTE: USB keyboard and mouse always work in the BIOS setup
irrespective of this setting.
Rear USB Configuration Enables or disables individual USB ports.
By default, Rear Port 1 (Top Left)* is selected.
By default, Rear Port 2 (Top Right)* is selected.
By default, Rear Port 3 (Bottom Left) is selected.
By default, Rear Port 5 (Bottom Right) is selected.
* Denotes a USB 3.0-capable port
NOTE: USB keyboard and mouse always work in the BIOS setup
irrespective of this setting.
Table 7. System setup options—Storage menu
Storage
SATA Operation
SATA Operation Configures operating mode of the integrated storage device controller.
Default: RAID On. Storage device is configured to support RAID. (Intel® Rapid
Restore Technology)
Storage Interface
Port Enablement Enables or disables the onboard drives.
Default: SATA-0 is ON
Default: SATA-1 is ON
Default: SATA-3 is ON
Default: M.2 PCIe SDD-0 is ON
SMART Reporting Enable or disable SMART Reporting during system startup.
Default: OFF
Drive Information Displays the information of various onboard drives.
Enable MediaCard Turn on or off all media cards, or enable or disable the media card in read-only
state.
By default, Secure Digital (SD) Card is selected.
System setup 61
Table 8. System setup options—Display menu
Display
Primary Display
Video Primary Display Set or change the primary video controller when multi controllers are available
in the system.
By default, Auto is selected.
Brightness on battery power Sets the screen brightness when the computer is running on battery power.
Default: 50
Full Screen Logo
Full Screen Logo Displays the full screen logo if the screen resolution matches the image of the
logo.
Default: OFF
Table 9. System setup options—Connection menu
Connection
Network Controller Configuration
Integrated NIC Controls the onboard LAN controller.
By default, Enable with PXE is selected.
Wireless Device Enable
WLAN Enables or disables the internal WLAN device.
Default: ON
Bluetooth® Enables or disables the internal Bluetooth® device.
Default: ON
Enable UEFI Network Stack
Enable UEFI Network Stack Enable or disable UEFI Network Stack.
Default: ON
HTTP(s) Boot Feature Enables or disables internal speaker.
By default, Enable Internal Speaker is selected.
HTTP(s) Boot Enables or disables HTTP(s) Boot Feature.
Default: ON
HTTP(s) Boot Modes Configure the HTTP(s) Boot Mode. Auto Mode will extract Boot URL from
the Dynamic Host Configuration Protocol (DHCP). Manual mode reads user-
provided Boot URL.
By default, Auto Mode is selected.
Table 10. System setup options—Power menu
Power
USB Wake Support
Enable USB Wake Support Enables USB devices like a mouse or keyboard to wake the system from
Standby, Hibernation, or Power Off state.
Default: ON
AC Behavior
62 System setup
Table 10. System setup options—Power menu (continued)
Power
AC Recovery Configures the system response when power is restored after an unexpected
loss of power.
Default: Power OFF is selected. System stays off after AC power is restored.
Active State Power Management
ASPM Configures the Active State Power Management (ASPM) level.
Default: Auto. There is handshaking between the device and PCI Express hub
to determine the best ASPM mode supported by the device.
Block Sleep
Block Sleep Blocks the computer from entering Sleep (S3) mode in the operating system.
Default: OFF
Deep Sleep Control
Deep Sleep Control Configures how aggressive the system is at conserving power while in
Shutdown (S5) or Hibernate (S4) mode.
Default: Enabled in S4 and S5
Intel Speed Shift Technology
Intel Speed Shift Technology Enables or disables the Intel Speed Shift Technology support. Turning on
this option allows the operating system to select the appropriate processor
performance automatically.
Default: ON
Table 11. System setup options—Security menu
Security
Intel® Platform Trust Technology
Intel Platform Trust Technology On Enable or disable the Intel Platform Trust Technology (PPT) visibility to the
operating system.
PPI ByPass for Clear Commands Enable or disable the TPM Physical Presence Interface (PPI). When enabled,
this setting will allow the OS to skip BIOS PPI user prompts when issuing the
Clear command. Changes to this setting take effect immediately.
Default: Disabled
Clear Enable or disable the Intel Platform Trust Technology (PPT) owner
information. When enabled, this setting will reset the PPT to its default state.
Changes to this setting take effect after exiting the BIOS setup menu.
Default: Disabled
SMM Security Mitigation
SMM Security Mitigation Enable or disable additional SMM Security Mitigation protection. The operating
system makes use of this feature to protect the secure environment crated by
virtualization-based security.
Default: OFF
Data Wipe on Next Boot
Start Data Wipe Enable or disable data wipe cycle. If enabled, the BIOS will schedule a data
wipe cycle for storage device(s) connected to the motherboard on the next
reboot. Any data on the storage device(s) cannot be recovered after this
Secure Wipe Operation.
Default: OFF
System setup 63
Table 11. System setup options—Security menu (continued)
Security
Absolute® Enable or disable the BIOS module interface of the optional Absolute
Persistence Module service from Absolute® Software.
Default: Enable Absolute
UEFI Boot Path Security
UEFI Boot Path Security Configures whether the system will prompt the user for the admin password (if
set) when booting to a UEFI boot path device from the F12 boot menu.
Default: Always Except Internal HDD is selected
Admin Password Set, change, or delete the administrator password.
System Password Set, change, or delete the system password.
Internal HDD-0 Password Set, change, or delete the internal hard-disk drive password.
Password Configuration Control the minimum and maximum number of characters allowed for Admin
and System passwords.
Password Change Enable or disable changes to the System and Hard Disk passwords when an
administrator password is set.
UEFI Capsule Firmware Updates Enable or disable BIOS updates through UEFI capsule update packages.
PTT Security
PTT On Enable or disable Platform Trust Technology (PTT) visibility to the operating
system.
Clear Default: Disabled
PPI ByPass for Clear Commands Enable or disable the TPM Physical Presence Interface (PPI). When enabled,
this setting will allow the OS to skip BIOS PPI user prompts when issuing the
Clear command. Changes to this setting take effect immediately.
Default: Disabled
Absolute® Enable or disable the BIOS module interface of the optional Absolute
Persistence Module service from Absolute® Software.
Default: Enable Absolute
Admin Setup Lockout Enable to prevent users from entering Setup when an Admin Password is set.
Master Password Lockout Disables the master password support. Hard Disk passwords need to be
cleared before changing the setting.
SMM Security Mitigation Enable or disable SMM Security Mitigation
Table 12. System setup options—Passwords menu
Passwords
Admin Password Enables the user to set, change, or delete the administrator (admin) password.
The admin password enables several security features
System Password Enables the user to set, change, or delete the system password.
Password Configuration
Upper Case Letter Enforces password restriction that the password must contain at least one
upper case letter.
Default: OFF
Lower Case Letter Enforces password restriction that the password must contain at least one
lower case letter.
Default: OFF
64 System setup
Table 12. System setup options—Passwords menu (continued)
Passwords
Digit Enforces password restriction that the password must contain at least one
digit.
Default: OFF
Special Character Enforces password restriction that the password must contain at least one
special character.
Default: OFF
Minimum Characters Controls the minimum number of characters allowed for password.
Default: 04
Password Changes
Enable Non-Admin Password Changes Enables or disables the user to change the system and hard drive password
without the need for admin password.
Default: ON
Master Password Lockout
Enable Master Password Lockout Enables or disables master password support.
Allow Non-Admin PSID Revert
Enable Allow Non-Admin PSID Revert Enables or disables Physical Security ID (PSID) revert of NVMe storage drives
from the Dell Security Manager prompt.
Default: Disabled
NOTE: When disabled, the PSID revert is protected by the BIOS Admin
password (if set), and the user will be prompted for the password before
the revert is performed
Table 13. System setup options—Update,Recovery menu
Update,Recovery
UEFI Capsule Firmware Updates
Enable UEFI Capsule Firmware Updates Enables or disables BIOS updates through UEFI capsule update packages.
Default: ON
BIOS Recovery from Hard Drive
BIOS Recovery from Hard Drive Enables the computer to recover from certain corrupted BIOS conditions from
a recovery file on the user primary hard drive or an external USB key.
Default: ON
NOTE: BIOS Recovery from Hard Drive is not available for Self-encrypting
drives (SED).
BIOS Downgrade
Allow BIOS Downgrade Controls flashing of the system firmware to previous revisions.
Default: ON
SupportAssist OS Recovery
SupportAssist OS Recovery Enables or disables the boot flow for SupportAssist OS Recovery tool, in the
event of certain system errors.
Default: ON
BIOSConnect
System setup 65
Table 13. System setup options—Update,Recovery menu (continued)
Update,Recovery
BIOSConnect Enables or disables cloud Service OS recovery if the main OS fails to boot
within the number of failures equal or greater than the value specified by
Dell Auto OS Recovery Threshold, and local Service does not boot, or is not
installed.
Default: ON
Dell Auto OS Recovery Threshold
Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console
and for Dell operating system Recovery tool.
Default: 2.
Table 14. System setup options—System Management menu
System Management
Service Tag PubTbl cell border-right-style="none"Displays the Service Tag of the
computer.
Asset Tag Creates a system Asset Tag that can be used by an IT administrator to
uniquely identify a particular system. Once set in BIOS, the Asset Tag cannot
be changed.
Wake on LAN/WLAN
Wake on LAN/WLAN Enables the computer to be powered on by special LAN signals.
Default: Disabled
Auto On Time
Auto On Time Controls automatic powering up of system for defined days and times.
Default: Disabled
SERR Messages
Enable SERR Messages Enables or disables SERR message mechanism. Some graphics cards require
that SERR message mechanism be disabled.
Default: ON
First Power On Date
Set Ownership Date Enable or disable setting of Ownership date.
Default: OFF
Table 15. System setup options—Keyboard menu
Keyboard
Keyboard Errors
Enable Keyboard Error Detection Enables or disables report of keyboard-related errors when the computer
boots.
Default: ON
Numlock LED
Enable Numlock LED Enables or disables Numlock when the computer boots.
Default: ON
66 System setup
Table 16. System setup options—Pre-boot Behavior menu
Pre-boot Behavior
Warnings and Errors
Warnings and Errors Selects an action on encountering a warning or error during boot.
Default: Prompt on Warnings and Errors. Stop, prompt, and wait for user input
when warnings or errors are detected.
NOTE: Errors deemed critical to the operation of the computer hardware
will always halt the computer.
Fastboot
Fastboot Configures the speed of the UEFI boot process.
Default: Thorough. Performs complete hardware and configuration initialization
during boot.
Extend BIOS POST Time
Extend BIOS POST Time Configures the BIOS POST (Power-On Self-Test) load time.
Default: 0 seconds
Table 17. System setup options—Virtualization menu
Virtualization
Intel Virtualization Technology
Enable Intel Virtualization Technology
(VT)
Enables the computer to run a virtual machine monitor (VMM).
Default: ON
VT for Direct I/O
Enable Intel VT for Direct I/O Enables the computer to perform Virtualization Technology for Direct I/O (VT-
d). VT-d is an Intel method that provides virtualization for memory map I/O.
Default: ON
Table 18. System setup options—Performance menu
Performance
Multi-Core Support
Active Cores CPU core disabling is not supported with current BIOS version. Changes the
number of CPU cores available to the operating system. The default value is
set to the maximum number of cores.
Default: All Cores
Intel® SpeedStep
Enable Intel SpeedStep Technology Enables or disables the Intel SpeedStep Technology to dynamically adjust
processor voltage and core frequency, decreasing average power consumption
and heat production.
Default: ON
C-States Control
Enable C-State Control Enables or disables the CPU's ability to enter and exit low-power states.
Default: ON
Intel Turbo Boost Technology
Enable Intel® Turbo Boost Technology Enabled or disabled the Intel TurboBoost mode of the processor. If enabled,
the Intel TurboBoost driver increases the performance of the CPU or graphics
processor.
System setup 67
Table 18. System setup options—Performance menu (continued)
Performance
Default: ON
Intel Hyper-Threading Technology
Enable Intel Hyper-Threading Technology Enabled or disabled the Intel Hyper-Threading mode of the processor. If
enabled, the Intel Hyper-Threading increases the efficiency of the processor
resources when multiple threads run on each core.
Default: ON
Table 19. System setup options—System Logs menu
System Logs
BIOS Event Log
Clear Bios Event Log Select keep or clear BIOS events.
Default: Keep
System and setup password
Table 20. 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 F12 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.
●At least one special character: ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | }
●Numbers 0 through 9.
●Upper case letters from A to Z.
68 System setup
●Lower case letters from a to z.
3. Type the system password that you entered earlier in the Confirm new password field and click OK.
4. Press Esc and save the changes as prompted by the pop-up message.
5. Press Y to save the changes.
The computer restarts.
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/or 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 F12 immediately after a power-on or reboot.
Steps
1. In the System BIOS or System Setup screen, select System Security and press Enter.
The System Security screen is displayed.
2. In the System Security screen, verify that Password Status is Unlocked.
3. Select System Password, update, or delete the existing system password, and press Enter or Tab.
4. Select Setup Password, update, or delete the existing setup password, and press Enter or Tab.
NOTE: If you change the System and/or Setup password, reenter the new password when prompted. If you delete the
System and/or 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.
Real Time Clock (RTC) reset
The Real Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell
computers from No POST/No Boot/No Power situations. You can initiate the RTC reset on the computer from a power-off
state only if it is connected to AC power. Press and hold the power button for 30 seconds. The computer RTC reset occurs
after you release the power button.
NOTE: The RTC reset is aborted if the power button is held for less than 25 seconds or more than 40 seconds.
The RTC reset restores the BIOS to defaults and resets the computer's date and time. The computer restarts several times
during the reset process. Depending on how the computer is configured, you may see LED indications during the period the
power button is held and after it is released. Once the reset is complete, the computer restarts and the Dell logo appears
indicates reset success.
CAUTION: Once RTC reset is complete, the computer may remain in a no-boot status until the time, date, and
other BIOS settings are correctly set to boot in Windows. Failing to boot immediately after a reset does not
mean that the reset has failed. You must restore the previous BIOS settings, such as the SATA Operation mode
(ex. RAID On AHCI) for the computer to reboot normally.
The following items are unaffected by the RTC reset:
●TPM (remains on and enabled if it was in that state prior to RTC reset)
●Service Tag
●Asset Tag
●Ownership Tag
●Admin Password
●System Password
●Hard drive Password
System setup 69
●Key Databases
●System Logs
The following items may or may not reset based on your custom BIOS setting selections:
●Boot List
●Secure Boot Enable
●Allow BIOS Downgrade
●Password clear
The Master System Password is used to clear the admin and computer password.
To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell.
NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying
Windows or your application.
Clearing BIOS (System Setup) and System passwords
About this task
To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell.
NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying
Windows or your application.
Updating the BIOS
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.
70 System setup
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
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.
System setup 71
Troubleshooting
Locate the Service Tag or Express Service Code of
your Dell computer
Your Dell computer is uniquely identified by a Service Tag or Express Service Code. To view relevant support resources for your
Dell computer, we recommend entering 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 for your Dell Laptop.
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.
System diagnostic lights
Power-supply diagnostics light
Indicates the power-supply state.
Hard-drive activity light
Turns on when the computer reads from or writes to the hard drive.
Table 21. LED codes
Diagnostic light codes Problem description
1,1 TPM detection failure
1,2 Unrecoverable SPI flash failure
2,1 CPU failure
2,2 Motherboard, covers BIOS corruption or ROM error
2,3 No Memory/RAM detected
2,4 Memory/RAM failure
2,5 Invalid memory installed
5
72 Troubleshooting
Table 21. LED codes (continued)
Diagnostic light codes Problem description
2,6 Motherboard/chipset error
3,1 CMOS battery failure
3,2 PCI of Video card/chip failure
3,3 Recovery Image not found
3,4 Recovery Image found but invalid
3,5 EC ran into power sequencing failure
3,6 Flash corruption detected by SBIOS
3,7 Timeout waiting on ME to reply to HECI message
4,1 Memory DIMM power rail failure
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.
WiFi power cycle
About this task
If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be
performed. The following procedure provides the instructions on how to conduct a WiFi power cycle:
NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.
Steps
1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.
Troubleshooting 73
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. Press and hold the power button for 20 seconds to drain the flea power.
4. Connect the power adapter to your computer.
5. Turn on your computer.
NOTE: For more information about performing a hard reset, see the knowledge base article 000130881 at
www.dell.com/support.
74 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 22. 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
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 75