Table of Contents
- Inspiron 15 5518 Service Manual
- Contents
- Working inside your computer
- Removing and installing components
- Recommended tools
- Screw list
- Major components of Inspiron 15 5518
- Base cover
- Battery
- Battery cable
- Memory module
- Solid-state drive—M.2 slot one
- Solid-state drive—M.2 slot two
- Wireless card
- Fan
- Coin-cell battery
- Heat sink
- I/O board
- Speakers
- Touchpad
- Display assembly
- Power button with optional fingerprint reader
- System board
- Power-adapter port
- Palm-rest and keyboard assembly
- Drivers and downloads
- System setup
- Troubleshooting
- Handling swollen Lithium-ion batteries
- Locate the Service Tag or Express Service Code of your Dell computer
- Backup media and recovery options
- System-diagnostic lights
- SupportAssist diagnostics
- Built-in self-test (BIST)
- Recovering the operating system
- WiFi power cycle
- Drain residual flea power (perform hard reset)
- Real Time Clock—RTC reset
- Getting help and contacting Dell
DELL 5518 User Manual
Displayed below is the user manual for 5518 by DELL which is a product in the Notebooks category. This manual has pages.
Related Manuals
Inspiron 15 5518
Service Manual
Regulatory Model: P106F
Regulatory Type: P106F001
September 2021
Rev. A01
Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid
the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
© 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other
trademarks may be trademarks of their respective owners.
Chapter 1: Working inside your computer...................................................................................... 6
Safety instructions.............................................................................................................................................................. 6
Before working inside your computer.......................................................................................................................6
Electrostatic discharge—ESD protection................................................................................................................7
ESD field service kit ..................................................................................................................................................... 7
Transporting sensitive components.......................................................................................................................... 8
Entering Service Mode................................................................................................................................................. 8
After working inside your computer..........................................................................................................................9
Exiting Service Mode.................................................................................................................................................... 9
Chapter 2: Removing and installing components.......................................................................... 10
Recommended tools..........................................................................................................................................................10
Screw list............................................................................................................................................................................. 10
Major components of Inspiron 15 5518..........................................................................................................................11
Base cover........................................................................................................................................................................... 13
Removing the base cover...........................................................................................................................................13
Installing the base cover.............................................................................................................................................14
Battery..................................................................................................................................................................................15
Lithium-ion battery precautions............................................................................................................................... 15
Removing the 3-cell battery......................................................................................................................................16
Installing the 3-cell battery........................................................................................................................................ 17
Removing the 4-cell battery...................................................................................................................................... 17
Installing the 4-cell battery........................................................................................................................................ 18
Battery cable.......................................................................................................................................................................19
Removing the battery cable...................................................................................................................................... 19
Installing the battery cable........................................................................................................................................20
Memory module.................................................................................................................................................................. 21
Removing the memory module................................................................................................................................. 21
Installing the memory module...................................................................................................................................22
Solid-state drive—M.2 slot one.................................................................................................................................... 24
Removing the 2230 solid-state drive from M.2 slot one................................................................................... 24
Installing the 2230 solid-state drive in M.2 slot one........................................................................................... 24
Removing the 2280 solid-state drive from M.2 slot one................................................................................... 25
Installing the 2280 solid-state drive in M.2 slot one...........................................................................................26
Installing the solid-state drive mounting bracket on M.2 slot one.................................................................. 27
Solid-state drive—M.2 slot two.................................................................................................................................... 28
Removing the 2230 solid-state drive from M.2 slot two...................................................................................28
Installing the 2230 solid-state drive in M.2 slot two.......................................................................................... 30
Wireless card...................................................................................................................................................................... 32
Removing the wireless card...................................................................................................................................... 32
Installing the wireless card........................................................................................................................................ 33
Fan........................................................................................................................................................................................ 34
Removing the fan........................................................................................................................................................ 34
Installing the fan.......................................................................................................................................................... 35
Contents
Contents 3
Coin-cell battery................................................................................................................................................................36
Removing the coin-cell battery................................................................................................................................36
Installing the coin-cell battery.................................................................................................................................. 36
Heat sink..............................................................................................................................................................................37
Removing the heatsink............................................................................................................................................... 37
Installing the heatsink.................................................................................................................................................38
I/O board.............................................................................................................................................................................39
Removing the I/O board............................................................................................................................................ 39
Installing the I/O board.............................................................................................................................................. 40
Speakers...............................................................................................................................................................................41
Removing the speakers...............................................................................................................................................41
Installing the speakers................................................................................................................................................ 42
Touchpad.............................................................................................................................................................................44
Removing the touchpad.............................................................................................................................................44
Installing the touchpad............................................................................................................................................... 44
Display assembly................................................................................................................................................................46
Removing the display assembly............................................................................................................................... 46
Installing the display assembly .................................................................................................................................47
Power button with optional fingerprint reader.......................................................................................................... 50
Removing the power button with optional fingerprint reader..........................................................................50
Installing the power button with optional fingerprint reader............................................................................50
System board...................................................................................................................................................................... 51
Removing the system board......................................................................................................................................51
Installing the system board....................................................................................................................................... 54
Power-adapter port..........................................................................................................................................................58
Removing the power-adapter port......................................................................................................................... 58
Installing the power-adapter port............................................................................................................................59
Palm-rest and keyboard assembly................................................................................................................................ 60
Removing the palm-rest and keyboard assembly................................................................................................60
Installing the palm-rest and keyboard assembly................................................................................................... 61
Chapter 3: Drivers and downloads............................................................................................... 63
Chapter 4: System setup............................................................................................................. 64
Entering BIOS setup program........................................................................................................................................ 64
Navigation keys..................................................................................................................................................................64
Boot Sequence...................................................................................................................................................................64
One time boot menu.........................................................................................................................................................65
System setup options.......................................................................................................................................................65
System and setup password...........................................................................................................................................69
Assigning a system setup password....................................................................................................................... 70
Deleting or changing an existing system setup password.................................................................................70
Clearing CMOS settings............................................................................................................................................. 71
Clearing BIOS (System Setup) and System passwords......................................................................................71
Updating the BIOS............................................................................................................................................................. 71
Updating the BIOS in Windows.................................................................................................................................71
Updating the BIOS using the USB drive in Windows...........................................................................................71
Updating the BIOS in Linux and Ubuntu................................................................................................................ 72
Updating the BIOS from the F12 One-Time boot menu.....................................................................................72
4Contents
Chapter 5: Troubleshooting......................................................................................................... 73
Handling swollen Lithium-ion batteries........................................................................................................................ 73
Locate the Service Tag or Express Service Code of your Dell computer ..............................................73
Backup media and recovery options............................................................................................................................. 74
System-diagnostic lights..................................................................................................................................................74
SupportAssist diagnostics............................................................................................................................................... 75
Built-in self-test (BIST)................................................................................................................................................... 75
M-BIST........................................................................................................................................................................... 75
LCD Built-in Self Test (BIST)................................................................................................................................... 76
Recovering the operating system..................................................................................................................................76
WiFi power cycle............................................................................................................................................................... 76
Drain residual flea power (perform hard reset)..........................................................................................................77
Real Time Clock—RTC reset..........................................................................................................................................77
Chapter 6: Getting help and contacting Dell................................................................................ 79
Contents 5
Working inside your computer
Safety instructions
Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless
otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped
with your computer.
WARNING: Before working inside your computer, read the safety information that is shipped with your
computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/
regulatory_compliance.
WARNING: Disconnect your computer from all power sources before opening the computer cover or panels.
After you finish working inside the computer, replace all covers, panels, and screws before connecting your
computer to an electrical outlet.
CAUTION: To avoid damaging the computer, ensure that the work surface is flat, dry, and clean.
CAUTION: To avoid damaging the components and cards, handle them by their edges, and avoid touching the
pins and the contacts.
CAUTION: You should only perform troubleshooting and repairs as authorized or directed by the Dell technical
assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the
safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance.
CAUTION: Before touching anything inside your computer, ground yourself by touching an unpainted metal
surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal
surface to dissipate static electricity which could harm internal components.
CAUTION: When you disconnect a cable, pull it by its connector or its pull tab, not the cable itself. Some cables
have connectors with locking tabs or thumbscrews that you must disengage before disconnecting the cable.
When disconnecting cables, keep them evenly aligned to avoid bending the connector pins. When connecting
cables, ensure that the ports and the connectors are correctly oriented and aligned.
CAUTION: Press and eject any installed card from the media-card reader.
CAUTION: Exercise caution when handling Lithium-ion batteries in laptops. Swollen batteries should not be used
and should be replaced and disposed properly.
NOTE: The color of your computer and certain components may appear differently than shown in this document.
Before working inside your computer
About this task
NOTE: The images in this document may differ from your computer depending on the configuration you ordered.
Steps
1. Save and close all open files and exit all open applications.
2. Shut down your computer. Click Start > Power > Shut down.
1
6 Working inside your computer
NOTE: If you are using a different operating system, see the documentation of your operating system for shut-down
instructions.
3. Disconnect your computer and all attached devices from their electrical outlets.
4. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer.
CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the
cable from the network device.
5. Remove any media card and optical disc from your computer, if applicable.
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.
Entering Service Mode
Service Mode allows users to immediately cut off electricity from the computer and conduct repairs without disconnecting the
battery cable from the system board.
To enter Service Mode:
1. Shut down your computer and disconnect the AC adapter.
2. Hold <B> key on the keyboard and press the power button for 3 seconds or until the Dell logo appears on the screen.
3. Press any key to continue.
NOTE: If the power adapter has not been disconnected, a message prompting you to remove the AC adapter appears
on the screen. Remove the AC adapter and then press any key to continue the Service Mode procedure.
NOTE: The Service Mode procedure automatically skips the following step if the Owner Tag of the computer is not
set up in advance by the manufacturer.
4. When the ready-to-proceed message appears on the screen, press any key to proceed. The computer emits three short
beeps and shuts down immediately.
Once the computer shuts down, you may perform the replacement procedures without disconnecting the battery cable from
the system board.
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.
Exiting Service Mode
Service Mode allows users to immediately cut off electricity from the computer and conduct repairs without disconnecting the
battery cable from the system board.
To exit Service Mode:
1. Connect the AC adapter to the power-adapter port on your computer.
2. Press the power button to turn on the computer. Your computer will automatically return to normal functioning mode.
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:
●Phillips screwdriver #0
●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 Screw type Quantity Screw image
Base cover M2x7.5 - captive
screws
2
Base cover M2x4 7
3-cell battery M2x3 3
4-cell battery M2x3 4
Wireless card M2x4 1
Solid-state drive - Slot 1 M2x3 1
Solid-state drive - Slot 2 M2x3 1
Fan M2x3 2
System board M2x2 3
2
10 Removing and installing components
Table 1. Screw list (continued)
Component Screw type Quantity Screw image
USB Type-C bracket M2x4 2
Power button with fingerprint
reader M2x3 1
I/O board M2x3 1
Touchpad M1.6x2 3
Touchpad M2x1.8 2
Power-adapter port M2.5x4 2
Display hinges M2.5x4 6
Major components of Inspiron 15 5518
The following image shows the major components of Inspiron 15 5518.
Removing and installing components 11
1. Base cover
2. Heat sink
3. System board
4. Memory
5. Battery
6. Right speaker
7. Palm-rest and keyboard assembly
8. Touchpad
9. Display assembly
10. Coin-cell battery
11. I/O board
12. M.2 2280 solid-state drive, if installed
13. Wireless card
14. M.2 2230 solid-state drive, if installed
15. Power-button with optional fingerprint-reader
12 Removing and installing components
16. Fan
17. Power-adapter port
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.
Base cover
Removing the base cover
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
About this task
The following images indicate the location of the base cover and provide a visual representation of the removal procedure.
Removing and installing components 13
Steps
1. Loosen the two (M2x7.75) captive screws that secure the base cover to the palm-rest and keyboard assembly.
2. Remove the seven (M2x4) screws that secure the base cover to the palm-rest and keyboard assembly.
3. Using a plastic scribe, pry the base cover beside the display hinges, and then continue to work on the sides to open the base
cover.
4. Lift the base cover off the palm-rest and keyboard assembly.
Installing the base cover
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following images indicate the location of the base cover and provide a visual representation of the installation procedure.
14 Removing and installing components
Steps
1. Place the base cover on top of the palm-rest and keyboard assembly.
2. Align the screw holes on the base cover with the screw holes on the palm-rest and keyboard assembly, and then snap the
base cover into place.
3. Tighten the two (M2x7.75) captive screws that secure the base cover to the palm-rest and keyboard assembly.
4. Replace the seven (M2x4) screws that secure the base cover to the palm-rest and keyboard assembly.
Next steps
1. Exit Service Mode.
2. Follow the procedure in After working inside your computer.
Battery
Lithium-ion battery precautions
CAUTION:
●Exercise caution when handling Lithium-ion batteries.
●Discharge the battery completely before removing it. Disconnect the AC power adapter from the system and
operate the computer solely on battery power—the battery is fully discharged when the computer no longer
turns on when the power button is pressed.
●Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
●Do not expose the battery to high temperatures, or disassemble battery packs and cells.
Removing and installing components 15
●Do not apply pressure to the surface of the battery.
●Do not bend the battery.
●Do not use tools of any kind to pry on or against the battery.
●Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental
puncture or damage to the battery and other system components.
●If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing,
bending, or crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical
support for assistance. See www.dell.com/contactdell.
●Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers.
●Swollen batteries should not be used and should be replaced and disposed properly. For guidelines on how to
handle and replace swollen Lithium-ion batteries, see Handling swollen Lithium-ion batteries.
Removing the 3-cell battery
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
About this task
The following image indicates the location of the 3-cell (41 Wh) battery and provides a visual representation of the removal
procedure.
Steps
1. Peel the tape that secures the battery cable to the system board.
2. Disconnect the battery cable from the system board.
3. Remove the three (M2x3) screws that secure the 3-cell battery to the palm-rest and keyboard assembly.
4. Lift the 3-cell battery, along with its cable, off the palm-rest and keyboard assembly.
16 Removing and installing components
Installing the 3-cell battery
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the 3-cell (41 Wh) battery and provides a visual representation of the installation
procedure.
Steps
1. Using the alignment posts, place the 3-cell battery on the palm-rest and keyboard assembly.
2. Align the screw holes on the 3-cell battery with the screw holes on the palm-rest and keyboard assembly.
3. Replace the three (M2x3) screws that secure the 3-cell battery to the palm-rest and keyboard assembly.
4. Connect the battery cable to the system board.
5. Adhere the tape that secures the battery cable to the system board.
Next steps
1. Install the base cover.
2. Follow the procedure in After working on your computer.
Removing the 4-cell battery
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
About this task
The following image indicates the location of the 4-cell (54 Wh) battery and provides a visual representation of the removal
procedure.
Removing and installing components 17
Steps
1. Peel the tape that secures the battery cable to the system board.
2. Disconnect the battery cable from the system board.
3. Remove the four (M2x3) screws that secure the 4-cell battery to the palm-rest and keyboard assembly.
4. Lift the 4-cell battery, along with its cable, off the palm-rest and keyboard assembly.
Installing the 4-cell battery
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the 4-cell (54 Wh) battery and provides a visual representation of the installation
procedure.
18 Removing and installing components
Steps
1. Using the alignment posts, place the 4-cell battery on the palm-rest and keyboard assembly.
2. Align the screw holes on the 4-cell battery with the screw holes on the palm-rest and keyboard assembly.
3. Replace the four (M2x3) screws that secure the 4-cell battery to the palm-rest and keyboard assembly.
4. Connect the battery cable to the system board.
5. Adhere the tape that secures the battery cable to the system board.
Next steps
1. Install the base cover.
2. Follow the procedure in After working on your computer.
Battery cable
Removing the battery cable
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
3. Remove the 3-cell battery or 4-cell battery, whichever applicable.
NOTE: If battery is disconnected from system board for service, then there is a delay during system boot as the system
undergoes RTC battery reset.
About this task
The following images indicate the location of the battery cable and provide a visual representation of the removal procedure.
Removing and installing components 19
Steps
1. Flip the battery and remove the battery cable from the routing guides on the battery.
2. Disconnect the battery cable from the connector on the battery.
3. Lift the battery cable off the battery.
Installing the battery cable
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the battery cable and provides a visual representation of the installation procedure.
20 Removing and installing components
Steps
1. Align and place the battery cable on the battery.
2. Route the battery cable through the routing guides on the battery.
3. Connect the battery cable to the connector on the battery.
Next steps
1. Install the 3-cell battery or 4-cell battery, whichever applicable.
2. Install the base cover.
3. Follow the procedure in After working on your computer.
Memory module
Removing the memory module
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following images indicate the location of the memory module and provide a visual representation of the removal procedure.
Removing and installing components 21
Steps
1. Lift the Mylar to access the memory module.
2. Use your fingertips to pull the securing clips from both sides of the memory module until the memory module pops-up.
3. Remove the memory module from the memory-module slot.
NOTE: Repeat step 1 to step 3 to remove any other memory modules installed in your computer.
Installing the memory module
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the memory module and provides a visual representation of the installation
procedure.
22 Removing and installing components
Steps
1. Lift the Mylar to access the memory-module slot.
2. Align the notch on the memory module with the tab on the memory-module slot.
3. Slide the memory module firmly at an angle, into the memory-module slot.
4. Press the memory module down until it clicks into place.
NOTE: If you do not hear the click, remove the memory module and reinstall it.
NOTE: Repeat step 1 to step 4 to install any other memory modules in your computer.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Removing and installing components 23
Solid-state drive—M.2 slot one
Removing the 2230 solid-state drive from M.2 slot one
Prerequisites
1. Follow the procedure in Before working inside your computer.
NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
NOTE: To avoid data loss, do not remove the solid-state drive while the computer is in sleep or on state.
2. Enter Service Mode.
3. Remove the base cover.
About this task
NOTE: Depending on the configuration ordered, your computer may support a 2230 solid-state drive, or a 2280 solid-state
drive in M.2 slot one.
NOTE: This procedure applies only to computers shipped with a 2230 solid-state drive installed in M.2 slot one.
The following image indicates the location of the 2230 solid-state drive that is installed in M.2 slot one and provides a visual
representation of the removal procedure.
Steps
1. Remove the screw (M2x3) that secures the 2230 solid-state drive to the palm-rest and keyboard assembly.
2. Slide and remove the solid-state drive from the M.2 slot one.
Installing the 2230 solid-state drive in M.2 slot one
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
24 Removing and installing components
About this task
NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
NOTE: Depending on the configuration ordered, your computer may support a 2230 solid-state drive, or a 2280 solid-state
drive in M.2 slot one.
NOTE: This procedure applies only if you are installing a 2230 solid-state drive in M.2 slot one.
NOTE: Before installing your 2230 or 2280 solid-state drive, ensure that the mounting bracket is in the correct location. For
more information, see Installing the solid-state drive mounting bracket.
The following image indicates the location of the 2230 solid-state drive that is installed in M.2 slot one and provides a visual
representation of the installation procedure.
Steps
1. Align the notch on the 2230 solid-state drive with the tab on the solid-state drive slot.
2. Slide the 2230 solid-state drive firmly into the solid-state drive slot at an angle.
3. Align the screw hole on the solid-state drive with the screw hole on the palm-rest and keyboard assembly.
4. Replace the screw (M2x3) that secures the 2230 solid-state drive to the palm-rest and keyboard assembly.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Removing the 2280 solid-state drive from M.2 slot one
Prerequisites
1. Follow the procedure in Before working inside your computer.
NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
NOTE: To avoid data loss, do not remove the solid-state drive while the computer is in sleep or on state.
Removing and installing components 25
2. Enter Service Mode.
3. Remove the base cover.
About this task
NOTE: Depending on the configuration ordered, your computer may support a 2280 solid-state drive, or a 2230 solid-state
drive in M.2 slot one.
NOTE: This procedure applies only to computers shipped with a 2280 solid-state drive installed in M.2 slot one.
The following image indicates the location of the 2280 solid-state drive that is installed in M.2 slot one and provides a visual
representation of the removal procedure.
Steps
1. Remove the screw (M2x3) that secures the solid-state drive to the palm-rest and keyboard assembly.
2. Slide and lift the 2280 solid-state drive off the M.2 solid-state drive slot one on the system board.
Installing the 2280 solid-state drive in M.2 slot one
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
NOTE: Depending on the configuration ordered, the computer one may support a 2280 solid-state drive, or a 2230
solid-state drive in M.2 slot one.
NOTE: This procedure is applicable if you are installing a 2280 solid-state drive in M.2 slot one.
NOTE: Before installing your 2230 or 2280 solid-state drive, ensure that the mounting bracket is in the correct location. For
more information, see Installing the solid-state drive mounting bracket.
26 Removing and installing components
The following image indicates the location of the 2280 solid-state drive that is installed in M.2 slot one and provides a visual
representation of the installation procedure.
Steps
1. Align the notch on the 2280 solid-state drive with the tab on the solid-state drive slot.
2. Slide the 2280 solid-state drive firmly into the solid-state drive slot at an angle.
3. Align the screw hole on the solid-state drive with the screw hole on the palm-rest and keyboard assembly.
4. Replace the screw (M2x3) that secures the 2280 solid-state drive to the palm-rest and keyboard assembly.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Installing the solid-state drive mounting bracket on M.2 slot one
About this task
The following image provides a visual representation of the procedure to install the solid-state drive mounting bracket when
replacing M.2 2230 solid-state drive with M.2 2280 solid-state drive in M.2 slot one.
Removing and installing components 27
The following image provides a visual representation of the procedure to install the solid-state drive mounting bracket when
replacing M.2 2280 solid-state drive with M.2 2230 solid-state drive in M.2 slot one.
Steps
1. Slide and remove the solid-state drive mounting bracket from the mounting bracket slot on the palm-rest and keyboard
assembly.
2. Rotate the solid-state drive mounting bracket to 180 degrees.
3. Slide the solid-state mounting bracket into the mounting slot on the palm-rest and keyboard assembly.
4. Install the 2230 solid-state drive or 2280 solid-state drive, whichever applicable.
Solid-state drive—M.2 slot two
Removing the 2230 solid-state drive from M.2 slot two
Prerequisites
NOTE: M.2 slot two supports only 2230 solid-state drive.
28 Removing and installing components
NOTE: This procedure applies only to computers shipped with a 2230 solid-state drive installed in M.2 slot two.
1. Follow the procedure in Before working inside your computer.
NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
NOTE: To avoid data loss, do not remove the solid-state drive while the computer is in sleep or on state.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following image indicates the location of the 2230 solid-state drive that is installed in M.2 slot two and provides a visual
representation of the removal procedure.
Removing and installing components 29
Steps
1. Remove the screw (M2x3) that secures the solid-state drive thermal shield and the solid-state drive to the palm-rest and
keyboard assembly.
2. Slide and lift the solid-state drive thermal shield off the solid-state drive.
3. Slide and remove the solid-state drive from the M.2 slot two.
Installing the 2230 solid-state drive in M.2 slot two
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive.
NOTE: M.2 slot two supports only 2230 solid-state drive.
NOTE: This procedure applies only to computers shipped with a 2230 solid-state drive installed in M.2 slot two.
The following image indicates the location of the 2230 solid-state drive that is installed in M.2 slot two and provides a visual
representation of the installation procedure.
30 Removing and installing components
Steps
1. Align the notch on the 2230 solid-state drive with the tab on M.2 slot two on the system board.
2. Slide the 2230 solid-state drive into M.2 slot two on the system board.
3. Place the solid-state drive thermal shield on the solid-state drive.
4. Align the screw hole on the solid-state drive thermal shield with the screw hole on the palm-rest and keyboard assembly.
5. Replace the screw (M2x3) that secures the solid-state drive thermal shield and solid-state drive to the palm-rest and
keyboard assembly.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Removing and installing components 31
Wireless card
Removing the wireless card
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following images indicate the location of the wireless card and provide a visual representation of the removal procedure.
Steps
1. Remove the screw (M2x4) that secures the wireless-card bracket to the wireless card and system board.
2. Remove the wireless-card bracket from the wireless card.
3. Disconnect the antenna cables from the wireless card.
4. Slide and remove the wireless card from the wireless-card slot.
32 Removing and installing components
Installing the wireless card
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the wireless card and provides a visual representation of the installation procedure.
Steps
1. Connect the antenna cables to the wireless card.
The following table provides the antenna-cable color scheme for the wireless card that is supported by your computer.
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)
Removing and installing components 33
2. Align the notch on the wireless card with the tab on the wireless-card slot on the system board.
3. Slide and insert the wireless card at an angle into the wireless-card slot on the system board.
4. Align the screw hole on the wireless-card bracket to the screw hole on the wireless card and system board.
5. Replace the screw (M2x4) that secures the wireless-card bracket to the wireless card and the system board.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Fan
Removing the fan
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following images indicate the location of the fan and provide a visual representation of the removal procedure.
Steps
1. Disconnect the fan cable from the system board.
2. Remove the two (M2x3) screws that secure the fan to the palm-rest and keyboard assembly.
34 Removing and installing components
3. Lift the fan off the palm-rest and keyboard assembly.
Installing the fan
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the fan and provides a visual representation of the installation procedure.
Steps
1. Using the alignment posts, place the fan on the palm-rest and keyboard assembly.
2. Replace the two (M2x3) screws to secure the fan to the palm-rest and keyboard assembly.
3. Connect the fan cable to the system board.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Removing and installing components 35
Coin-cell battery
Removing the coin-cell battery
Prerequisites
1. Follow the procedure in Before working inside your computer.
CAUTION: Removing the coin-cell battery resets the BIOS setup program’s settings to default. It is
recommended that you note the BIOS setup program’s settings before removing the coin-cell battery.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure.
Steps
1. Disconnect the coin-cell battery cable from the I/O board.
2. Using the flat-end of a plastic scribe, peel the coin-cell battery from the palm-rest and keyboard assembly.
Installing the coin-cell battery
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
36 Removing and installing components
About this task
The following image indicates the location of the coin-cell battery and provides a visual representation of the installation
procedure.
Steps
1. Adhere the coin-cell battery to the slot on the palm-rest and keyboard assembly.
2. Connect the coin-cell battery cable to the I/O board.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Heat sink
Removing the heatsink
Prerequisites
1. Follow the procedure in Before working inside your computer.
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.
NOTE: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to cool before you
touch it.
2. Enter Service Mode.
3. Remove the base cover.
Removing and installing components 37
About this task
The following images indicate the location of the heatsink and provide a visual representation of the removal procedure.
Steps
1. In reverse sequential order (as indicated on the heat sink), loosen the four captive screws that secure the heat sink to the
system board.
2. Lift the heat sink off the system board.
Installing the heatsink
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
CAUTION: Incorrect alignment of the heat sink can damage the system board and processor.
NOTE: If either the system board or the heat sink is replaced, use the thermal pad/paste provided in the kit to ensure that
thermal conductivity is achieved.
About this task
The following image indicates the location of the heatsink and provides a visual representation of the installation procedure.
38 Removing and installing components
Steps
1. Align the screw holes on the heat sink with the screw holes on the system board.
2. In sequential order (as indicated on the heat sink), tighten the four captive screws that secure the heat sink to the system
board.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
I/O board
Removing the I/O board
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following images indicate the location of the I/O board and provide a visual representation of the removal procedure.
Removing and installing components 39
Steps
1. Remove the two (M2.5x4) screws that secure the left hinge.
2. Open the display hinge at an angle of 90 degrees.
3. Open the latch, and disconnect the power button with optional fingerprint reader cable from the I/O board.
4. Disconnect the coin-cell battery cable from the I/O board.
5. Peel the tape that secures the I/O-board cable to the I/O board.
6. Open the latch and disconnect the I/O-board cable from the I/O board.
7. Remove the screw (M2x3) that secures the I/O board to the palm-rest and keyboard assembly.
8. Lift the I/O board off the palm-rest and keyboard assembly.
Installing the I/O board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the I/O board and provides a visual representation of the installation procedure.
40 Removing and installing components
Steps
1. Slide the I/O board into the slots on the palm-rest and keyboard assembly.
2. Align the screw hole on the I/O board with the screw hole on the palm-rest and keyboard assembly.
3. Replace the screw (M2x3) that secures the I/O board to the palm-rest and keyboard assembly.
4. Connect the power-button with optional fingerprint reader cable into the connector on the I/O board and close the latch to
secure the cable.
5. Connect the coin-cell battery cable to the I/O board.
6. Connect the I/O-board cable to the I/O board and close the latch to secure the cable.
7. Adhere the tape that secures the I/O-board cable to the I/O board.
8. Close the left display hinge.
9. Replace the two (M2.5x4) screws that secure the left display hinge to the palm-rest and keyboard assembly.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Speakers
Removing the speakers
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
Removing and installing components 41
About this task
The following images indicate the location of the speakers and provide a visual representation of the removal procedure.
Steps
1. Open the latch and disconnect the keyboard backlit cable, keyboard cable, and the touchpad cable from the system board.
2. Note the speaker cable routing, and remove the speaker cable from the routing guides on the palm-rest and keyboard
assembly.
3. Peel the tape that secures the speaker cable to the palm-rest and keyboard assembly.
4. Disconnect the speaker cable from the system board.
5. Lift the speakers, along with the cable, off the palm-rest and keyboard assembly.
Installing the speakers
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
42 Removing and installing components
About this task
The following image indicates the location of the speaker and provides a visual representation of the installation procedure.
Steps
1. Using the alignment posts and rubber grommets, place the speakers on the slots of the palm-rest and keyboard assembly.
2. Connect the speaker cable to the system board.
3. Route the speaker cable through the routing guides on the palm-rest and keyboard assembly.
4. Connect the keyboard backlit cable, keyboard cable, and the touchpad cable to its connectors on the system board and close
the latch to secure the cable.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Removing and installing components 43
Touchpad
Removing the touchpad
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
3. Remove the battery.
About this task
The following images indicate the location of the touchpad and provide a visual representation of the removal procedure.
Steps
1. Open the latch and disconnect the touchpad cable from the system board.
2. Remove the three (M1.6x2) screws that secure the touchpad bracket to the palm-rest and keyboard assembly.
3. Peel the tape that secures the touchpad bracket to the palm-rest and keyboard assembly.
4. Lift the touchpad bracket off the palm-rest and keyboard assembly.
5. Remove the two (M2x1.8) screws that secure the touchpad to the palm-rest and keyboard assembly.
6. Peel the tapes that secure the touchpad to the palm-rest and keyboard assembly.
7. Lift the touchpad, along with the touchpad cable, off the palm-rest and keyboard assembly.
Installing the touchpad
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the touchpad and provides a visual representation of the installation procedure.
44 Removing and installing components
Steps
1. Slide the touchpad into the slot on the palm-rest and keyboard assembly.
NOTE: Turn the computer over and open the display. Ensure that the touchpad is equally aligned along all four sides.
2. Replace the two (M2x1.8) screws that secure the touchpad to the palm-rest and keyboard assembly.
3. Adhere the tapes that secure the touchpad to the palm-rest and keyboard assembly.
4. Align the screw holes on the touchpad bracket with the screw holes on the palm-rest and keyboard assembly.
5. Replace the three (M1.6x2) screws that secure the touchpad bracket to the palm-rest and keyboard assembly.
6. Adhere the tape that secures the touchpad bracket to the palm-rest and keyboard assembly.
7. Slide the touchpad cable into the connector on the touchpad and close the latch to secure the cable.
Next steps
1. Install the 3-cell battery or 4-cell battery, whichever applicable.
2. Install the base cover.
3. Follow the procedure in After working inside your computer.
Removing and installing components 45
Display assembly
Removing the display assembly
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following images indicate the location of the display assembly and provide a visual representation of the removal procedure.
46 Removing and installing components
Steps
1. Peel the tape that secures the display cable to the system board.
2. Open the latch and disconnect the display cable from the system board.
3. Remove the two (M2.5x4) screws that secure the left-display hinge to the system board.
4. Remove the two (M2.5x4) screws that secure the right-display hinge to the system board.
5. Open the display hinges at an angle of 90 degrees.
6. Gently slide the palm-rest and keyboard assembly off the display assembly.
Installing the display assembly
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the display assembly and provides a visual representation of the installation
procedure.
Removing and installing components 47
48 Removing and installing components
Steps
1. Slide the display assembly at an angle, and place the display assembly on the palm-rest and keyboard assembly.
2. Using the alignment posts, close the display hinges.
3. Replace the two (M2.5x4) screws that secure the right-display hinge to the system board.
4. Replace the two (M2.5x4) screws that secure the left-display hinge to the system board.
5. Slide the display cable into the connector on the system board and close the latch to secure the cable.
6. Adhere the tape that secures the display cable to the system board.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Removing and installing components 49
Power button with optional fingerprint reader
Removing the power button with optional fingerprint reader
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
4. Remove the I/O board.
About this task
The following images indicate the location of the power-button with optional fingerprint reader and provide a visual
representation of the removal procedure.
Steps
1. Remove the screw (M2x3) that secures the power button with optional fingerprint reader to the palm-rest and keyboard
assembly.
2. Lift the power button with optional fingerprint reader off the palm-rest and keyboard assembly.
Installing the power button with optional fingerprint reader
About this task
The following images indicate the location of the power button with optional fingerprint reader and provide a visual
representation of the installation procedure.
50 Removing and installing components
Steps
1. Align and place the power button with optional fingerprint reader on the palm-rest and keyboard assembly.
2. Replace the screw (M2x3) that secures the power button with optional fingerprint reader to the palm-rest and keyboard
assembly.
Next steps
1. Install the I/O board.
2. Install the base cover.
3. Exit Service Mode.
4. Follow the procedure in After working inside your computer.
System board
Removing the system board
Prerequisites
1. Follow the procedure in Before working inside your computer.
NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup
program after you replace the system board.
NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup
program. You must make the appropriate changes again after you replace the system board.
NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can
reconnect the cables correctly after you replace the system board.
2. Remove the base cover.
Removing and installing components 51
3. Remove the 3-cell battery or 4-cell battery, whichever applicable.
4. Remove the memory module.
5. Remove the M.2 2280 solid-state drive or M.2 2230 solid-state drive from M.2 slot one, whichever applicable.
6. Remove the M.2 2230 solid-state drive from M.2 slot two, if applicable.
7. Remove the wireless card.
8. Remove the fan.
9. Remove the heat sink.
About this task
NOTE: When removing the system board to replace/access other parts, the system board can be removed and installed
with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board
and heat-sink.
The following image indicates the connectors on your system board.
Figure 1. System board connectors
1. Display cable connector
2. Power-adapter port cable connector
3. Keyboard backlit cable connector
4. Keyboard cable connector
5. Touchpad cable connector
6. Battery cable connector
7. Fan cable connector
8. Speaker cable connector
9. I/O-board cable connector
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
52 Removing and installing components
Removing and installing components 53
Steps
1. Remove the three (M2.5x4) screws that secure the right display hinge to the palm-rest and keyboard assembly.
2. Open the right display hinge at an angle of 90 degrees.
3. Peel the tape that secures the display cable to the system board.
4. Open the latch and disconnect the display cable from the system board.
5. Peel the tape and disconnect the power-adapter port cable from the system board.
6. Remove the two (M2x4) screws that secure the USB Type-C bracket to the system board.
7. Open the latch, and disconnect the keyboard backlit cable from the system board.
8. Open the latch, and disconnect the keyboard cable from the system board.
9. Open the latch, and disconnect the touchpad cable from the system board.
10. Disconnect the speaker cable from the system board.
11. Peel the tape and disconnect the I/O-board cable from the system board.
12. Remove the three (M2x2) screws that secure the system board to the palm-rest and keyboard assembly.
13. Lift the system board off the palm-rest and keyboard assembly.
Installing the system board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
NOTE: When replacing/accessing other parts, the system board can be installed with the heat sink attached in order to
simplify the procedure and preserve the thermal bond between the system board and heat-sink.
NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup
program after you replace the system board.
54 Removing and installing components
NOTE: Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program. You
must make the appropriate changes again after you replace the system board.
The following image indicates the connectors on your system board.
Figure 2. System board connectors
1. Display cable connector
2. Power-adapter port cable connector
3. Keyboard backlit cable connector
4. Keyboard cable connector
5. Touchpad cable connector
6. Battery cable connector
7. Fan cable connector
8. Speaker cable connector
9. I/O-board cable connector
The following image indicates the location of the system board and provides a visual representation of the installation procedure.
Removing and installing components 55
56 Removing and installing components
Steps
1. Align and place the system board on the palm-rest and keyboard assembly.
2. Replace the three (M2x2) screws that secure the system board to the palm-rest and keyboard assembly.
3. Connect the display cable to the system board and close the latch to secure the cable.
4. Adhere the tape that secures the display cable to the system board.
5. Connect the power-adapter port cable to the system board.
6. Adhere the tape that secures the power-adapter port cable to the system board.
7. Align the screw holes on the USB Type-C port bracket with the screw holes on the system board.
8. Replace the two (M2x4) screws that secure the USB Type-C port bracket to the system board.
9. Connect the keyboard backlit cable to the system board and close the latch to secure the cable.
10. Connect the keyboard cable to the system board and close the latch to secure the cable.
11. Connect the touchpad cable to the system board and close the latch to secure the cable.
12. Connect the speaker cable to the system board.
Removing and installing components 57
13. Connect the I/O-board cable to the system board.
14. Adhere the tape that secures the I/O-board cable to the system board.
15. Close the right display hinge.
16. Replace the three (M2.5x4) screws that secure the right display-hinge to the palm-rest and keyboard assembly.
Next steps
1. Install the heat sink.
2. Install the fan.
3. Install the wireless card.
4. Install the M.2 2280 solid-state drive or M.2 2230 solid-state drive in M.2 slot one, whichever applicable.
5. Install the M.2 2230 solid-state drive in M.2 slot two, if applicable.
6. Install the memory module.
7. Install the 3-cell battery or 4-cell battery, whichever applicable.
8. Install the base cover.
9. Follow the procedure in After working inside your computer.
Power-adapter port
Removing the power-adapter port
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Enter Service Mode.
3. Remove the base cover.
About this task
The following images indicate the location of the power-adapter port and provide a visual representation of the removal
procedure.
58 Removing and installing components
Steps
1. Remove the two (M2.5x4) screws that secure the right display-hinge to the system board.
2. Open the display hinge at an angle of 90 degrees.
3. Disconnect the power-adapter port cable from the system board.
4. Peel the tape that secures the power-adapter port cable to the system board.
5. Remove the power-adapter port cable from the routing guide on the palm-rest and keyboard assembly.
6. Lift the power-adapter port, along with its cable, off the palm-rest and keyboard assembly.
Installing the power-adapter port
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the power-adapter port and provides a visual representation of the installation
procedure.
Steps
1. Place the power-adapter port, along with its cable, into the slot on the palm-rest and keyboard assembly.
2. Route the power-adapter port cable through the routing guide on the palm-rest and keyboard assembly.
3. Adhere the tape that secures the power-adapter port cable to the system board.
4. Connect the power-adapter port cable to the system board.
5. Close the right display-hinge and align the screw holes on the right display-hinge with the screw holes on the system board
and palm-rest and keyboard assembly.
6. Replace the two (M2.5x4) screws that secure the right display-hinge to the system board and palm-rest and keyboard
assembly.
Next steps
1. Install the base cover.
2. Exit Service Mode.
3. Follow the procedure in After working inside your computer.
Removing and installing components 59
Palm-rest and keyboard assembly
Removing the palm-rest and keyboard assembly
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the base cover.
3. Remove the 3-cell battery or 4-cell battery, whichever applicable.
4. Remove the memory module.
5. Remove the M.2 2280 solid-state drive or M.2 2230 solid-state drive from M.2 slot one, whichever applicable.
6. Remove the M.2 2230 solid-state drive from M.2 slot two, if applicable.
7. Remove the wireless card.
8. Remove the fan.
9. Remove the coin-cell battery.
10. Remove the I/O board.
11. Remove the system board.
NOTE: The system board can be removed along with the heat sink.
12. Remove the power-button with optional fingerprint reader.
13. Remove the power-adapter port.
14. Remove the speakers.
15. Remove the touchpad.
16. Remove the display assembly.
About this task
After performing the steps in the pre-requisites, you are left with the palm-rest and keyboard assembly.
60 Removing and installing components
Installing the palm-rest and keyboard assembly
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
Place the palm-rest and keyboard assembly on a flat surface.
Removing and installing components 61
Next steps
1. Install the display assembly.
2. Install the touchpad.
3. Install the speakers.
4. Install the power-adapter port.
5. Install the power-button with optional fingerprint reader.
6. Install the system board.
NOTE: The system board can be installed along with the heat sink.
7. Install the I/O board.
8. Install the fan.
9. Install the coin-cell battery.
10. Install the wireless card.
11. Install the M.2 2280 solid-state drive or M.2 2230 solid-state drive in M.2 slot one, whichever applicable.
12. Install the M.2 2230 solid-state drive in M.2 slot two, if applicable.
13. Install the memory module.
14. Install the 3-cell battery or 4-cell battery, whichever applicable.
15. Install the base cover.
16. Follow the procedure in After working inside your computer.
62 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.
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.
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
4
64 System setup
●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 that are listed in this section may or may not be
displayed.
Table 4. System setup options—System information menu
Overview
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.
Default: Enabled
Battery Displays the battery health information.
Primary Displays the primary battery.
Battery Level Displays the battery level.
Battery State Displays the battery state.
System setup 65
Table 4. System setup options—System information menu (continued)
Overview
Health Displays the battery health.
AC Adapter Displays whether an AC adapter is connected. If connected, the AC adapter
type.
PROCESSOR
Processor Type Displays the processor type.
Maximum Clock Speed Displays the maximum processor clock speed.
Minimum Clock Speed Displays the minimum processor clock speed.
Current Clock Speed Displays the current processor clock speed.
Core Count Displays the number of cores on the processor.
Processor ID Displays the processor identification code.
Processor L2 Cache Displays the processor L2 Cache size.
Processor L3 Cache Displays the processor L3 Cache size.
Microcode Version Displays the microcode version.
Intel Hyper-Threading Capable Displays whether the processor is Hyper-Threading (HT) capable.
64-Bit Technology Displays whether 64-bit technology is used.
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 that is used for the memory.
DIMM A Size Displays the memory configuration of DIMM A.
DIMM B Size Displays the memory configuration of DIMM B.
DEVICES
Panel Type Displays the Panel Type of the computer.
Video Controller Displays the integrate graphics information of the computer.
Video Memory Displays the video memory information of the computer.
Wi-Fi Device Displays the Wi-Fi device installed in 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 whether a Bluetooth device is installed in the computer.
LOM MAC Address Displays the MAC address of the LAN on Motherboard (LOM)
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, ONBOARD NIC (IPV4) is selected
66 System setup
Table 5. System setup options—Boot Configuration menu (continued)
Boot Configuration
By default, ONBOARD NIC (IPV6) is selected
By default, UEFI Hard Drive 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.
System setup 67
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 USB Boot Support is selected.
Table 7. System setup options—Storage menu
Storage
SATA/NVMe Operation
SATA/NVMe Operation Configures operating mode of the integrated storage device controller.
Default: RAID On. Storage device is configured to support RAID functions.
When enabled, all NVMe and SATA devices will be mapped under VMD
controller. Windows RST (Intel Rapid Restore Technology) driver, or Linux
kernel VMD driver must be loaded in order to boot the OS.
Storage Interface
Port Enablement Enables or disables the onboard drives.
Default: ON
Drive Information Displays the information of various onboard drives.
Table 8. System setup options—Display menu
Display
Display Brightness
Brightness on battery power Sets the screen brightness when the computer is running on battery power.
Default: 50
Brightness on AC power Sets the screen brightness when the computer is running on AC power.
Default: 100
Table 9. 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.
Internal HDD-1 Password Enables the user to set, change, or delete the Internal HDD-1 password.
Table 10. System setup options—Update,Recovery menu
Update,Recovery
SupportAssist OS Recovery Enables or disables the boot flow for SupportAssist OS Recovery tool, in the
event of certain system error.
Default: ON
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 Controls the automatic boot flow for SupportAssist System Resolution Console
and for Dell operating system Recovery tool.
68 System setup
Table 10. System setup options—Update,Recovery menu (continued)
Update,Recovery
Default: 2.
Table 11. System setup options—System Management menu
System Management
Service Tag 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.
Table 12. System setup options—Pre-boot Behavior menu
Pre-boot Behavior
Adapter warnings
Enable Adapter warnings Enables or disables the computer to display adapter warning messages when
adapters with too little power capacity are detected.
Default: ON
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.
Table 13. System setup options—System Logs menu
System Logs
BIOS Event Log
Clear Bios Event Log Select keep or clear BIOS events.
Default: Keep
Thermal Event Log
Clear Thermal Event Log Select keep or clear Thermal events.
Default: Keep
Power Event Log
Clear POWER Event Log Select keep or clear Power events.
Default: Keep
System and setup password
Table 14. System and setup password
Password type Description
System password Password that you must enter to log in 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.
System setup 69
CAUTION: The password features provide a basic level of security for the data on your computer.
CAUTION: Anyone can access the data that is 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.
●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.
70 System setup
Clearing CMOS settings
About this task
CAUTION: Clearing CMOS settings will reset the BIOS settings on your computer.
Steps
1. Remove the base cover.
2. Disconnect the battery cable from the system board.
3. Remove the coin-cell battery.
4. Wait for one minute.
5. Replace the coin-cell battery.
6. Connect the battery cable to the system board.
7. Replace the base cover.
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 .
System setup 71
6. Select the USB drive from the One Time Boot Menu.
7. Type the BIOS setup program filename and press Enter.
The BIOS Update Utility appears.
8. Follow the on-screen instructions to complete the BIOS update.
Updating the BIOS in Linux and Ubuntu
To update the system BIOS on a computer that is installed with Linux or Ubuntu, see the knowledge base article 000131486 at
www.dell.com/support.
Updating the BIOS 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.
72 System setup
Troubleshooting
Handling swollen Lithium-ion batteries
Like most laptops, Dell laptops use lithium-ion batteries. One type of lithium-ion battery is the lithium-ion polymer battery.
Lithium-ion polymer batteries have increased in popularity in recent years and have become standard in the electronics industry
due to customer preferences for a slim form factor (especially with newer ultra-thin laptops) and long battery life. Inherent to
lithium-ion polymer battery technology is the potential for swelling of the battery cells.
Swollen battery may impact the performance of the laptop. To prevent possible further damage to the device enclosure or
internal components leading to malfunction, discontinue the use of the laptop and discharge it by disconnecting the AC adapter
and letting the battery drain.
Swollen batteries should not be used and should be replaced and disposed of properly. We recommend contacting Dell product
support for options to replace a swollen battery under the terms of the applicable warranty or service contract, including options
for replacement by a Dell authorized service technician.
The guidelines for handling and replacing Lithium-ion batteries are as follows:
●Exercise caution when handling Lithium-ion batteries.
●Discharge the battery before removing it from the system. To discharge the battery, unplug the AC adapter from the system
and operate the system only on battery power. When the system will no longer power on when the power button is pressed,
the battery is fully discharged.
●Do not crush, drop, mutilate, or penetrate the battery with foreign objects.
●Do not expose the battery to high temperatures, or disassemble battery packs and cells.
●Do not apply pressure to the surface of the battery.
●Do not bend the battery.
●Do not use tools of any type to pry on or against the battery.
●If a battery gets stuck in a device as a result of swelling, do not try to free it as puncturing, bending, or crushing a battery
can be dangerous.
●Do not attempt to reassemble a damaged or swollen battery into a laptop.
●Swollen batteries that are covered under warranty should be returned to Dell in an approved shipping container (provided
by Dell)—this is to comply with transportation regulations. Swollen batteries that are not covered under warranty should be
disposed of at an approved recycling center. Contact Dell product support at https://www.dell.com/support for assistance
and further instructions.
●Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a
compatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from other
computers with your computer. Always purchase genuine batteries from https://www.dell.com or otherwise directly from
Dell.
Lithium-ion batteries can swell for various reasons such as age, number of charge cycles, or exposure to high heat. For more
information on how to improve the performance and lifespan of the laptop battery and to minimize the possibility of occurrence
of the issue, see Dell Laptop Battery - Frequently Asked Questions.
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.
5
Troubleshooting 73
Backup media and recovery options
It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes
multiple options for recovering Windows operating system on your Dell PC. For more information. see Dell Windows Backup
Media and Recovery Options.
System-diagnostic lights
The power and battery status light indicates the power and battery status of the computer. These are the power states:
Solid white: Power adapter is connected, and the battery has more than 5% charge.
Amber: Computer is running on battery, and the battery has less than 5% charge.
Off:
●Power adapter is connected, and the battery is fully charged.
●Computer is running on battery, and the battery has more than 5% charge.
●Computer is in sleep state, hibernation, or turned off.
The power and battery-status light may also blink amber or white according to predefined "beep codes" indicating various
failures.
For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times
followed by a pause. This 2,3 pattern continues until the computer is turned off, indicating no memory or RAM is detected.
The following table shows different power and battery-status light patterns and associated problems.
NOTE: The following diagnostic light codes and recommended solutions are intended for Dell service technicians to
troubleshoot problems. You should only perform troubleshooting and repairs as authorized or directed by the Dell technical
support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
Table 15. Diagnostic-light codes
Diagnostic light codes
(Amber, white)
Problem description
1,1 TPM detection failure
1,2 Unrecoverable SPI flash failure
1,3 Short in hinge cable tripped OCP1
1,4 Short in hinge cable tripped OCP2
1,5 EC unable to program i-Fuse
1,6 EC internal Failure
2,1 Processor failure
2,2 System board: BIOS or ROM (Read-Only
Memory) failure
2,3 No memory or RAM (Random-Access Memory)
detected
2,4 Memory or RAM (Random-Access Memory)
failure
2,5 Invalid memory installed
2,6 System-board or chipset error
2,7 Display failure - SBIOS message
2,8 Display failure - EC detection of power rail
failure
3,1 CMOS battery failure
3,2 PCI, video card/chip failure
74 Troubleshooting
Table 15. Diagnostic-light codes (continued)
Diagnostic light codes
(Amber, white)
Problem description
3,3 BIOS recovery image not found
3,4 Recovery image found but invalid
3,5 Power-rail failure
3,6 System BIOS Flash incomplete
3,7 Management Engine (ME) error
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.
Built-in self-test (BIST)
M-BIST
M-BIST (Built In Self-Test) is the system board's built-in self-test diagnostics tool that improves the diagnostics accuracy of
system board embedded controller (EC) failures.
NOTE: M-BIST can be manually initiated before POST (Power On Self Test).
How to run M-BIST
NOTE: M-BIST must be initiated on the system from a power-off state either connected to AC power or with battery only.
1. Press and hold both the M key on the keyboard and the power button to initiate M-BIST.
2. With both the M key and the power button held down, the battery indicator LED may exhibit two states:
a. OFF: No fault detected with the system board
b. AMBER: Indicates a problem with the system board
3. If there is a failure with the system board, the battery status LED will flash one of the following error codes for 30 seconds:
Table 16. LED error codes
Blinking Pattern Possible Problem
Amber White
2 1 CPU Failure
Troubleshooting 75
Table 16. LED error codes (continued)
Blinking Pattern Possible Problem
Amber White
2 8 LCD Power Rail Failure
1 1 TPM Detection Failure
2 4 Unrecoverable SPI Failure
4. If there is no failure with the system board, the LCD will cycle through the solid color screens described in the LCD-BIST
section for 30 seconds and then power off.
LCD Built-in Self Test (BIST)
Dell laptops have a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent
problem with the LCD (screen) of the Dell laptop or with the video card (GPU) and PC settings.
When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines,
color fade etc., it is always a good practice to isolate the LCD (screen) by running the Built-In Self Test (BIST).
How to invoke LCD BIST Test
1. Power off the Dell laptop.
2. Disconnect any peripherals that are connected to the laptop. Connect only the AC adapter (charger) to the laptop.
3. Ensure that the LCD (screen) is clean (no dust particles on the surface of the screen).
4. Press and hold D key and Power on the laptop to enter LCD built-in self test (BIST) mode. Continue to hold the D key, until
the system boots up.
5. The screen will display solid colors and change colors on the entire screen to white, black, red, green, and blue twice.
6. Then it will display the colors white, black and red.
7. Carefully inspect the screen for abnormalities (any lines, fuzzy color or distortion on the screen).
8. At the end of the last solid color (red), the system will shut down.
NOTE: Dell SupportAssist Pre-boot diagnostics upon launch, initiates an LCD BIST first, expecting a user intervention
confirm functionality of the LCD.
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.
76 Troubleshooting
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.
Drain residual flea power (perform hard reset)
About this task
Flea power is the residual static electricity that remains in the computer even after it has been powered off and the battery is
removed.
For your safety, and to protect the sensitive electronic components in your computer, you are requested to drain residual flea
power before removing or replacing any components in your computer.
Draining residual flea power, also known as a performing a "hard reset", is also a common troubleshooting step if your computer
does not power on or boot into the operating system.
To drain residual flea power (perform a hard reset)
Steps
1. Turn off your computer.
2. Disconnect the power adapter from your computer.
3. Remove the base cover.
4. Remove the battery.
5. Press and hold the power button for 20 seconds to drain the flea power.
6. Install the battery.
7. Install the base cover.
8. Connect the power adapter to your computer.
9. Turn on your computer.
NOTE: For more information about performing a hard reset, see the knowledge base article 000130881 at
www.dell.com/support.
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
Latitude and Precision systems from No POST/No Boot/No Power situations. You can initiate the RTC reset on the system
from a power-off state only if it is connected to AC power. Press and hold the power button for 25 seconds. The system RTC
reset occurs after you release the power button.
NOTE: If AC power is disconnected from the system during the process or the power button is held longer than 40
seconds, the RTC reset process gets aborted.
The RTC reset will reset the BIOS to Defaults, un-provision Intel vPro and reset the system date and time. The following items
are unaffected by the RTC reset:
●Service Tag
●Asset Tag
●Ownership Tag
●Admin Password
●System Password
●HDD Password
Troubleshooting 77
●Key Databases
●System Logs
NOTE: The IT administrator's vPro account and password on the system will be un-provisioned. The system needs to go
through the setup and configuration process again to reconnect it to the vPro server.
The below items may or may not reset based on your custom BIOS setting selections:
●Boot List
●Enable Legacy Option ROMs
●Secure Boot Enable
●Allow BIOS Downgrade
78 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 17. Self-help resources
Self-help resources Resource location
Information about Dell products and services www.dell.com
My Dell app
Tips
Contact Support In Windows search, type Contact Support, and press
Enter.
Online help for operating system www.dell.com/support/windows
www.dell.com/support/linux
Access top solutions, diagnostics, drivers and downloads, and
learn more about your computer through videos, manuals and
documents.
Your Dell computer is uniquely identified by a Service Tag or
Express Service Code. To view relevant support resources for
your Dell computer, enter the Service Tag or Express Service
Code at www.dell.com/support.
For more information on how to find the Service Tag for your
computer, see Locate the Service Tag on your computer.
Dell knowledge base articles for a variety of computer
concerns 1. Go to www.dell.com/support.
2. On the menu bar at the top of the Support page, select
Support > Knowledge Base.
3. In the Search field on the Knowledge Base page, type the
keyword, topic, or model number, and then click or tap the
search icon to view the related articles.
Contacting Dell
To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell.
NOTE: Availability varies by country/region and product, and some services may not be available in your country/region.
NOTE: If you do not have an active Internet connection, you can find contact information about your purchase invoice,
packing slip, bill, or Dell product catalog.
6
Getting help and contacting Dell 79