Dell Latitude 3540 Service Manual
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Dell Latitude 3540 Service Manual

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Latitude 3540
Service Manual
Regulatory Model: P170G
Regulatory Type: P170G001
March 2023
Rev. A00

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Summary of Contents for Dell Latitude 3540

  • Page 1 Latitude 3540 Service Manual Regulatory Model: P170G Regulatory Type: P170G001 March 2023 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2023 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    After working inside your computer..........................9 BitLocker..................................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw list..................................... 10 Major components of Latitude 3540..........................11 Base cover................................... 13 Removing the base cover............................13 Installing the base cover.............................15 Battery....................................15 Lithium-ion battery precautions..........................15 Removing the battery..............................
  • Page 4 I/O board.....................................33 Removing the I/O board............................33 Installing the I/O board.............................. 34 Power-button board................................. 35 Removing the power button.............................35 Installing the power button............................36 Power button with optional fingerprint reader......................37 Removing the power button with optional fingerprint reader................37 Installing the power button with optional fingerprint reader................38 Touchpad.....................................39 Removing the touchpad.............................39 Installing the touchpad...............................40...
  • Page 5 LCD Built-in Self Test (BIST)........................... 90 System-diagnostic lights..............................90 Recovering the operating system..........................92 Real-Time Clock (RTC Reset)............................92 Backup media and recovery options..........................92 Wi-Fi power cycle................................93 Drain residual flea power (perform hard reset)......................93 Chapter 6: Getting help and contacting Dell................94 Contents...

  • Page 6: Chapter 1: Working Inside Your Computer

    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.

  • Page 7: Safety Precautions

    Ensure that your computer is shut down and the AC adapter is disconnected. a. Hold <B> key on the keyboard and press the power button for 3 seconds or until the Dell logo appears on the screen. b. Press any key to continue.

  • Page 8: Esd Field Service Kit

    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.

  • Page 9: 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.

  • Page 10: Chapter 2: Removing And Installing Components

    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 ● Phillips screwdriver #1 ●...

  • Page 11: Major Components Of Latitude 3540

    The following image shows the major components of Latitude 3540. 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.
  • Page 12 1. Base cover 2. memory modules 3. DC-in port cable 4. Bracket 5. System board 6. Touchpad cable 7. Battery 8. Speaker 9. Palm rest and keyboard assembly 10. Display assembly 11. Touchpad 12. Coin cell battery 13. Wireless card 14.

  • Page 13: Base Cover

    Base cover Removing the base cover Prerequisites 1. Follow the procedure in Before working inside your computer. 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...
  • Page 14 Steps 1. Loosen the nine captive screws that secure the base cover to the chassis. 2. Using a plastic scribe, pry open the base cover starting from the recesses, which are located in the U-shaped indents at the bottom edge of the base cover, near the hinges. 3.

  • Page 15: Installing The Base Cover

    ● 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.

  • Page 16: Installing The Battery

    Steps 1. Use the pull tab to disconnect the battery cable from the connector on the system board. 2. Loosen the five captive screws that secure the battery to the palm-rest and keyboard assembly. 3. Lift the battery off the palm-rest and keyboard assembly. Installing the battery Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 17: Battery Cable

    Steps 1. Align the screw holes on the battery to the screw holes on the palm-rest and keyboard assembly. 2. Tighten the five captive screws to secure the battery to the palm-rest and keyboard assembly. 3. Connect the battery cable to the connector on the system board. Next steps 1.

  • Page 18: Installing The Battery Cable

    Steps 1. Unroute 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 away from 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.

  • Page 19: Memory Modules

    Steps 1. Connect the battery cable to the connector on the battery. 2. Route the battery cable through the routing guides on the battery. Next steps 1. Install the battery. 2. Install the base cover. 3. Follow the procedure in After working inside your computer.

  • Page 20: Installing The Memory Modules

    About this task The following images indicate the location of the memory module and provide a visual representation of the removal procedure. Steps 1. Pry the clips securing the memory module until the memory module pops-up. 2. Remove the memory module from the memory slot. Installing the memory modules Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 21: M.2 Solid-State Drive

    Steps 1. Align the notch on the memory module with the tab on the memory module slot. 2. Slide the memory module firmly into the slot at an angle. 3. 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.

  • Page 22: Installing The M.2 2230 Solid-State Drive

    The following images indicate the location of the M.2 2230 solid-state drive and provide a visual representation of the removal procedure. Steps 1. Remove the screw (M2x2) to secure the M.2 2230 solid-state drive holder to the system board. 2. Lift the M.2 2230 solid-state drive holder off the palm-rest and keyboard assembly. 3.

  • Page 23: Removing The M.2 2280 Solid-State Drive

    Steps 1. Flip the M.2 2230 solid-state drive holder and align the notch on the M.2 2230 solid-state drive with the tab on the M.2 2230 solid-state drive holder. 2. Replace the single screw (M2x2) that secure the M.2 2230 solid-state drive to the M.2 2230 solid-state drive holder. 3.

  • Page 24: Installing The M.2 2280 Solid-State Drive

    About this task NOTE: This procedure applies only to systems shipped with a M.2 2280 solid-state drive installed. NOTE: The M.2 solid-state drive that is installed on your system depends on the configuration ordered. Supported card configurations on the M.2 solid-state drive slot are: ●...

  • Page 25: Wireless Card

    Steps 1. Align the notch on the M.2 2280 solid-state drive with the tab on the M.2 card connector on the system board. 2. Slide the M.2 2280 solid-state drive into the M.2 card connector on the system board. 3. Align the screw hole on the M.2 2280 solid-state drive with the screw hole on the palm-rest and keyboard assembly. 4.

  • Page 26: Installing The Wireless Card

    Steps 1. Remove the screw (M2x3) that secures wireless-card bracket to the system board. 2. Slide and remove the wireless-card bracket from the system. 3. Disconnect the WLAN-antenna cables from the respective connectors on the wireless card. 4. Lift and remove the wireless card from the wireless card slot on the system board. Installing the wireless card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 27 Steps 1. Connect the WLAN-antenna cables to the respective connectors on the wireless card. NOTE: The WLAN-antenna cable connectors are fragile, and utmost care should be taken while replacing them. Table 2. WLAN-antenna cable color scheme Connectors on the wireless card Antenna-cable color Main - White triangle (△) on the wireless module of the White cable...

  • Page 28: Wireless Wide Area Network (Wwan) Card

    Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer. Wireless Wide Area Network (WWAN) card Removing the WWAN card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.

  • Page 29: Fan

    About this task The figure indicates the location of the WWAN card and provides a visual representation of the installation procedure. Steps 1. Align the notch on the WWAN card with the tab on the WWAN-card slot and insert the WWAN card at an angle into the WWAN-card slot.

  • Page 30: Installing The Thermal Fan

    Steps 1. Disconnect the thermal-fan cable from the connector on the system board. 2. Remove the two screws (M2x3) that secure the thermal fan to the system board. 3. Lift and remove the thermal fan from the system board. Installing the thermal fan Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 31: Coin-Cell Battery

    Steps 1. Place the thermal fan into its slot on the system board. 2. Align the screw holes on the thermal fan to the screw holes on the system board. 3. Replace the two screws (M2x3) to secure the thermal fan to the system board. 4.

  • Page 32: Installing The Coin-Cell Battery

    2. Remove the base cover. About this task NOTE: When the coin-cell battery is removed, it clears the CMOS settings. The following image indicates the location of the coin-cell battery and provides a visual representation of the removal procedure. Steps 1.

  • Page 33: I/O Board

    Steps 1. Align and place the coin-cell battery into its slot on the palm-rest and keyboard assembly. 2. Connect the coin-cell battery cable to the connector on the system board. Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer.

  • Page 34: Installing The I/O Board

    CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable. Steps 1.

  • Page 35: Power-Button Board

    CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable. Steps 1.

  • Page 36: Installing The Power Button

    Steps Lift to remove the power button from the slot on the palm-rest and keyboard assembly. Installing the power button Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the power button and provide a visual representation of the installation procedure. Removing and installing components...

  • Page 37: Power Button With Optional Fingerprint Reader

    Steps Align and place the power button into its slot on the palm-rest and keyboard assembly. Next steps 1. Install the board. 2. Install the base cover. 3. Follow the procedure in After working inside your computer. Power button with optional fingerprint reader Removing the power button with optional fingerprint reader Prerequisites 1.

  • Page 38: Installing The Power Button With Optional Fingerprint Reader

    Steps 1. Remove the screw (M2x3) that secures the power button with optional fingerprint reader to the palm-rest and keyboard assembly. 2. Peel off the fingerprint reader flexible printed circuits from the connector on the power button. 3. Remove the power button with optional fingerprint reader from the slot on the palm-rest and keyboard assembly. Installing the power button with optional fingerprint reader Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 39: Touchpad

    Steps 1. Align and place the power button with optional fingerprint reader into its slot on the palm-rest and keyboard assembly. 2. Adhere the fingerprint reader flexible printed circuits to the connector on the power button. 3. Align the screw hole on the power button with optional fingerprint reader to the screw hole on the palm-rest and keyboard assembly.

  • Page 40: Installing The Touchpad

    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 connector on the system board. 2.
  • Page 41 About this task The following images indicate the location of the touchpad and provide a visual representation of the installation procedure. Steps 1. Align and place the touchpad module into the slot on the palm-rest and keyboard assembly. 2. Align the screw holes on the touchpad module to the screw holes on the palm-rest and keyboard assembly. 3.

  • Page 42: Power-Adapter Port

    Power-adapter port Removing the power-adapter port Prerequisites 1. Follow the procedure in Before working inside your computer. 2. 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.

  • Page 43: Speakers

    Steps 1. Align and place the power-adapter port on the system board. 2. Connect the power-adapter port cable to the connector on the system board. 3. Gently press the right display hinge in downward direction towards the system. 4. Align the screw holes on the right display hinge with the screw holes on the system. 5.

  • Page 44: Installing The Speakers

    Steps 1. Disconnect the speaker cable from the connector on the system board. 2. Unroute the speaker cable from the routing guides on the palm-rest and keyboard assembly. 3. Remove the speakers from the chassis. Installing the speakers Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE: If the rubber grommets are pushed out when removing the speakers, push them back in place before replacing the...

  • Page 45: Heat Sink

    Steps 1. Align and place the speakers in the slot on the chassis. 2. Route the speaker cables through the routing guides on the palm-rest and keyboard assembly. 3. Connect the speaker cable to the connector on the system board. Next steps 1.

  • Page 46: Installing The Heat-Sink For Integrated Graphics

    Steps 1. Loosen the four captive screws that secure the heat-sink to the system board. NOTE: Loosen the four captive screws in the reverse sequential order mentioned on the heat-sink [4 > 3 > 2 > 1] 2. Lift and remove the heat-sink from the system board. Installing the heat-sink for integrated graphics Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 47: System Board

    Steps 1. Place the heat-sink into its slot on the system board. 2. Align the screw holes on the heat-sink to the screw holes on the system board. 3. Tighten the four captive screws to secure the heat-sink to the system board. NOTE: Tighten the four captive screws in the sequential order mentioned on the heat-sink [1 >...
  • Page 48 Figure 1. System-board connectors 1. Display cable connector 2. DC-in port connector 3. Speaker cable connector 4. Touchpad cable connector 5. Battery cable connector 6. WLAN card connector 7. M.2 solid-state drive connector 8. I/O board cable connector 9. Fan cable connector The following images indicate the location of the system board and provide a visual representation of the removal procedure.

  • Page 49: Installing The System Board

    CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable. Steps 1.
  • Page 50 About this task The following images indicate the location of the system board and provide a visual representation of the installation procedure. CAUTION: The system has a coin-cell battery that is connected to the I/O board. Disconnecting the I/O board cable resets the BIOS setup program settings to default. Note the BIOS setup program settings before disconnecting the I/O board cable.

  • Page 51: Display Assembly

    Next steps 1. Install the display assembly. 2. Install the thermal heat-sink. 3. Install the thermal fan. 4. Install the wireless card. 5. Install the M.2 2230 solid-state drive or the M.2 2280 solid-state drive, whichever applicable. 6. Install the battery. 7.
  • Page 52 Removing and installing components...

  • Page 53: Installing The Display Assembly

    Steps 1. Peel the adhesive tape that secures the display cable. 2. Disconnect the display cable from the connector on the system board. 3. Unroute the WLAN antennae cables from the routing guides on the fan. 4. Place the computer on a flat surface such that the palm-rest and keyboard assembly lay flat on the surface. 5.
  • Page 54 Removing and installing components...

  • Page 55: Display Bezel

    Steps 1. Place the display assembly on a flat surface. 2. Slide the display assembly at an angle and place the system chassis under the hinges of the display assembly. 3. Gently press down on the display hinges to align the screw holes on the display hinges with the screw holes on the palm-rest and keyboard assembly.

  • Page 56: Installing The Display Bezel

    Steps NOTE: The display bezel is adhered to the display panel with adhesive. Insert a plastic scribe into the recesses near both hinge caps to start the prying process to release the display bezel. Pry along the outside edge of the display bezel and work your way around the entire display bezel until the display bezel is separated from the display cover.

  • Page 57: Display Panel

    Next steps 1. Install the display assembly. 2. Install the base cover. 3. Follow the procedure in After working inside your computer. Display panel Removing the display panel Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover.
  • Page 58 Removing and installing components...
  • Page 59 Steps NOTE: The display panel is preassembled with the display brackets as a single service part. Do not pull the Stretch Release (SR) tapes and separate the brackets from the display panel. 1. Remove the six (M2.5x2.5) screws that secure left and right hinges to the display back cover. NOTE: While removing the display panel, disengage the display panel tabs from the display cover before flipping it over Removing and installing components...

  • Page 60: Installing The Display Panel

    2. Lift and open the display panel to access the display cable. 3. Peel the conductive tape on the display cable connector. 4. Open the latch and disconnect the cable from the connector on the display panel. 5. Lift the display panel away from the display back cover. Installing the display panel Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 61 Removing and installing components...
  • Page 62 Removing and installing components...

  • Page 63: Camera

    Steps 1. Connect the display cable to the connector on the display panel and close the latch. 2. Adhere the conductive tape to secure the display cable to the display panel. 3. Insert the display panel tabs into the slots on the display cover. 4.

  • Page 64: Installing The Camera

    Steps 1. Disconnect the camera cable from the camera module. 2. Lift to remove the camera module from the display back cover. Installing the camera 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 display panel and provides a visual representation of the installation procedure.

  • Page 65: Edp/Display Cable

    Steps 1. Align and replace the camera module on the display back cover. 2. Connect the camera cable to the camera module. Next steps 1. Install the display panel. 2. Install the display bezel. 3. Install the display assembly. 4. Install the base cover.

  • Page 66: Installing The Edp Cable

    2. Remove the base cover. 3. Remove the display assembly. 4. Remove the display bezel. 5. Remove the display panel. 6. Remove the camera. About this task The following image indicates the location of the eDP cable and provide a visual representation of the removal procedure. Steps 1.

  • Page 67: Display Back Cover

    Steps 1. Connect the eDP cable to the connector on the camera module. 2. Adhere the eDP cable to the display back cover. 3. Adhere the conductive tape and route the eDP cable to the display back cover. Next steps 1.

  • Page 68: Installing The Display Back Cover

    About this task The following image indicates the location of the display back cover and provide a visual representation of the removal procedure. Steps After performing the steps in the pre-requisites, we are left with the display back cover. Installing the display back cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 69: Palm-Rest And Keyboard Assembly

    Steps Place the display back cover on a flat surface. Next steps 1. Install the cable. 2. Install the camera. 3. Install the display panel. 4. Install the display bezel. 5. Install the display assembly. 6. Install the base cover. 7.

  • Page 70: Installing The Palm-Rest And Keyboard Assembly

    12. Remove the speakers. 13. Remove the touchpad. 14. Remove the system board. NOTE: The system board can be removed with the thermal heat-sink attached to it in order to simplify the procedure and preserve the thermal bond between the system board and the thermal heat-sink. 15.
  • Page 71 Steps Place the palm-rest and keyboard assembly on a flat surface and perform the post-requisites to install the palm-rest and keyboard assembly. Next steps 1. Install the power-adapter port. 2. Install the system board. NOTE: The system board can be installed with the thermal heat-sink attached to it in order to simplify the procedure and preserve the thermal bond between the system board and the thermal heat-sink.

  • Page 72: Chapter 3: Drivers And Downloads

    Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Base article, Drivers and Downloads FAQ 000123347. Drivers and downloads...

  • Page 73: Chapter 4: Bios Setup

    BIOS 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.

  • Page 74: One Time Boot Menu

    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) ●...
  • Page 75 Table 4. System setup options—System information menu (continued) Overview AC Adapter Displays whether the AC adapter is connected or not. Battery Life Type Displays the battery life type of the system. Processor Information Processor Type Displays the processor type. Maximum Clock Speed Displays the maximum processor clock speed.
  • Page 76 Table 5. System setup options—Boot Configuration menu (continued) Boot Configuration Boot Sequence Displays the boot sequence. Secure Boot Enable Secure Boot Enable or disable the secure boot feature. By default, the option is not enabled. Enable Microsoft UEFI CA Enable or disable the Microsoft UEFI CA boot feature. By default, the option is enabled.
  • Page 77 Table 7. System setup options—Storage menu (continued) Storage By default, the RAID On option is enabled. Storage interface Port Enablement This page allows you to enable the onboard drives. By default, the M.2 PCIe SSD option is enabled. SMART Reporting Enable SMART Reporting Enable or disable Self-Monitoring, Analysis, and Reporting Technology (SMART) during system startup.
  • Page 78 By default, the Optimized option is enabled. USB Wake Support Wake on Dell USB-C Dock When enabled, connecting a Dell USB-C Dock will wake the system from Standby, Hibernate, and Power Off. By default, the Wake on Dell USB-C Dock option is enabled.
  • Page 79 Table 11. System setup options—Security menu (continued) Security By default, the Attestation Enable option is enabled. Key Storage Enable Enables to control whether the Trusted Platform Module (TPM) Storage Hierarchy is available to the operating system. By default, the Key Storage Enable option is enabled. SHA-256 When enabled, the BIOS and TPM will use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot.
  • Page 80 Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the option is disabled. Table 13. System setup options—Update, Recovery menu...
  • Page 81 By default, the option is enabled. Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell operating system Recovery Tool. By default, the threshold value is set to 2. Table 14. System setup options—System Management menu...
  • Page 82 Table 15. System setup options—Keyboard menu (continued) Keyboard Keyboard Backlight Timeout on AC By default, 10 seconds option is enabled. Keyboard Backlight Timeout on Allows you to schedule timeout for keyboard backlight on battery power. Battery Keyboard Backlight Timeout on Battery By default, 10 seconds option is enabled.
  • Page 83 Table 18. System setup options—Performance menu Performance Multi Core Support Multiple Atom Cores Allows you to chnage the number of Atom cores available to the operating system. By default, the All Cores option is enabled. Intel SpeedStep Enable Intel SpeedStep Technology Enables the system to dynamically adjust processor voltage and core frequency, decreasing average power consumption and heat production.

  • Page 84: Updating The Bios

    Updating the BIOS in Windows to download the latest BIOS setup program file. 2. Create a bootable USB drive. For more information, search in the Knowledge Base Resource at www.dell.com/support. 3. Copy the BIOS setup program file to the bootable USB drive.

  • Page 85: Updating The Bios From The F12 One-Time Boot Menu

    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.

  • Page 86: Assigning A System Setup Password

    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.

  • Page 87: Clearing Cmos Settings

    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.

  • Page 88: Chapter 5: Troubleshooting

    ● 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.

  • Page 89: Running The Supportassist Pre-Boot System Performance Check

    Running the SupportAssist Pre-Boot System Performance Check Steps 1. Turn on your computer. 2. As the computer boots, press the F12 key as the Dell logo appears. 3. On the boot menu screen, select the Diagnostics option. 4. Click the arrow at the bottom left corner.

  • Page 90: Lcd Power Rail Test (L-Bist)

    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.
  • Page 91 (AC, battery, coin cell) and errors drain flea power by pressing and holding down power button for 3~5 seconds. CPU failure ● Run the Dell Support Assist/Dell Diagnostics tool. ● If problem persists, replace the system board. System board failure (included ●...

  • Page 92: Recovering 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.

  • Page 93: Wi-Fi Power Cycle

    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, search in the Knowledge Base Resource at www.dell.com/ support. Troubleshooting...

  • Page 94: Chapter 6: Getting Help And Contacting Dell

    Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 23. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com Tips Contact Support In Windows search, type Contact Support, and press Enter.

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