Dell Latitude 9420 Service Manual
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Dell Latitude 9420 Service Manual

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Latitude 9420
Service Manual
Regulatory Model: P141G/P142G
Regulatory Type: P141G001/P142G001
April 2021
Rev. A00

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Summary of Contents for Dell Latitude 9420

  • Page 1 Latitude 9420 Service Manual Regulatory Model: P141G/P142G Regulatory Type: P141G001/P142G001 April 2021 Rev. A00...
  • Page 2 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.

  • Page 3: Table Of Contents

    Contents Chapter 1: Working inside your computer..................6 Before working inside your computer..........................6 Safety precautions................................6 Entering Service Mode............................... 7 Exiting Service Mode................................7 Electrostatic discharge—ESD protection........................7 ESD field service kit ................................8 After working inside your computer..........................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw list....................................
  • Page 4 Installing the right speaker............................39 Wireless Local Area Network (WLAN) Antenna module..................40 Removing the WLAN antenna module........................40 Installing the WLAN antenna module........................41 I/O daughter board................................43 Removing the I/O daughter board.......................... 43 Installing the I/O daughter board..........................44 Power button with fingerprint reader assembly......................
  • Page 5 ExpressSign-in..................................79 Chapter 5: Troubleshooting......................83 Dell SupportAssist Pre-boot System Performance Check diagnostics..............83 Running the SupportAssist Pre-Boot System Performance Check..............83 System diagnostic lights..............................83 Diagnostic error messages..............................85 System error messages..............................88 Wi-Fi power cycle................................88 Chapter 6: Getting help and contacting Dell................89 Contents...

  • Page 6: Chapter 1: Working Inside Your Computer

    Standby power Dell products with standby power must be unplugged before you open the case. Systems that incorporate standby power are essentially powered while turned off. The internal power enables the system to be remotely turned on (wake on LAN) and suspended into a sleep mode and has other advanced power management features.

  • Page 7: Entering 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.

  • Page 8: Esd Field Service Kit

    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.

  • Page 9: After Working Inside Your Computer

    After working inside your computer About this task NOTE: 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.

  • 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. Topics: • Recommended tools • Screw list • Major components of your computer • Secure Digital (SD) Card • SIM card tray •...

  • Page 11: Screw List

    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.
  • Page 12 Table 1. Screw list Component Screw type Quantity Image Battery M1.6x3 M2x4 Left speaker M1.6x1.8 Right speaker M1.6x1.8 WLAN antenna module M1.6x1.8 M1.6x3 I/O daughter board M2x4 Power button with fingerprint M1.6x2.5 reader assembly System board M1.6x2.5 M2x4 Captive screw USH daughter board M1.2x2.5 WWAN main antenna module...

  • Page 13: Major Components Of Your Computer

    Major components of your computer 1. Base cover 2. Battery 3. Solid-state drive shielding cover 4. Wireless Wide Area Network (WWAN) shielding cover 5. Solid-state drive 6. Wireless Wide Area Network (WWAN) card 7. System board 8. Wireless Local Area Network (WLAN) Antenna module 9.

  • Page 14: Secure Digital (Sd) Card

    Secure Digital (SD) Card Removing the SD card Prerequisites Follow the procedure in before working inside your computer. About this task The following image provides a visual representation of the SD card removal procedure. Steps 1. Push the SD card to eject it from the slot. 2.

  • Page 15: Sim Card Tray

    Steps Insert the SD card into its slot until it click into place. Next steps 1. Follow the procedure in After working on your computer. SIM card tray Removing the SIM card tray Prerequisites Follow the procedure in before working inside your computer.

  • Page 16: Installing The Sim Card Tray

    Steps 1. Insert the SIM card removal pin into the release hole to release the SIM card tray. 2. Push the pin to disengage the lock, and eject the SIM card tray. 3. Slide the SIM card tray out of the slot on the system. 4.

  • Page 17: Base Cover

    Steps 1. Insert the SIM card removal pin into the release hole to remove the SIM card tray. 2. Push the pin to disengage the lock, and eject the SIM card tray. 3. Slide the SIM card tray out of the slot on the system. 4.
  • Page 18 About this task Removing and installing components...

  • Page 19: Installing The Base Cover

    Steps 1. Loosen the eight captive screws that secure the base cover to the system. 2. Using a plastic scribe, pry open the base cover starting from the recesses that are located in the U-shaped indents near the hinges at the top edge of the base cover. NOTE: Do not lift the base cover from the top side immediately after prying it from the recesses, as this will cause damage to the base cover.

  • Page 20: Solid-State Drive

    Steps 1. Align and place the base cover on the palm-rest assembly, and snap the base cover into place. 2. Tighten the eight captive screws to secure the base cover to the system. Next steps 1. Install the SIM card tray.

  • Page 21: Installing The Solid-State Drive

    About this task The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure. Steps 1. Using a plastic scribe pry open the solid-state drive shielding cover from the recess at the bottom edge of the solid-state drive shielding cover.

  • Page 22: Wireless Wide Area Network (Wwan) Card

    Steps 1. Align the notch on the solid-state drive with the tab on the M.2 card connector. 2. Slide the solid-state drive into the M.2 card connector on the system board. 3. Replace the single (M1.6x2.5) screw that secures the solid-state drive to the system board. 4.
  • Page 23 3. Remove the SIM card tray. 4. Enter service mode. 5. Remove the base cover. About this task The following images indicate the location of the WWAN card and provide a visual representation of the removal procedure. Steps 1. Loosen the single captive screw securing the WWAN-card bracket to the system board. 2.

  • Page 24: Installing The Wwan Card

    Installing the WWAN 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 WWAN card and provides a visual representation of the installation procedure. Steps 1.

  • Page 25: System Fan

    NOTE: If any of the thermal pads located underneath the WWAN card are detached from the system board when removing the WWAN card from the system, adhere them back on the system board. 2. Slide the WWAN card at an angle into the WWAN-card slot. 3.

  • Page 26: Installing The System Fan

    Steps 1. Peel the single piece of tape securing the system fan cable to the system board. 2. Disconnect the system fan cable from the connector on the system board. 3. Remove the two (M1.6x2.5) screws that secure the system fan to the palm-rest assembly. 4.

  • Page 27: Heat Sink

    Heat sink Removing the heat sink Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the card. 3. Remove the SIM card tray. 4. Enter service mode. 5. Remove the base cover. About this task The following image indicates the location of the heat sink and provides a visual representation of the removal procedure. Steps 1.

  • Page 28: Installing The Heat Sink

    4. Gently flip open the CPU shielding cover from the right side of the cover towards the left side. 5. Lift the CPU shielding cover off the system. 6. Loosen the three captive screws that secure the heat sink to the system board. 7.

  • Page 29: Display Assembly

    Next steps 1. Install the base cover. 2. Install the SIM card tray. 3. Install the card. 4. Exit service mode. 5. Follow the procedure in After working on your computer. Display assembly Removing the display assembly Prerequisites 1. Follow the procedure in before working inside your computer.
  • Page 30 Removing and installing components...
  • Page 31 Steps 1. Disconnect the display cable from the connector on the system board. CAUTION: The connector for the display cable features a latch that locks it in place on the system board. Flip open the display cable latch from the two tabs on the top side of the latch. After flipping open the latch, hold the left and right sides of the cable's connector head and gently disconnect the display cable from the system board in a direct upward motion to prevent damage to the connector's pins.

  • Page 32: Installing The Display Assembly

    5. Lift the display assembly off the computer. Installing the display assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: The display assembly installation procedure is the same for both laptop and 2-in-1 chassis. About this task The following image indicates the location of the display assembly and provides a visual representation of the installation procedure.

  • Page 33: Battery

    Steps 1. Align and place the palm-rest assembly under the hinges of the display assembly. 2. Replace the six (M2.5x3) screws that secure the display assembly to the system. 3. Connect the display and camera cable to the connector on the system board. Next steps 1.
  • Page 34 About this task The following images indicate the location of the battery and provide a visual representation of the removal procedure. Steps 1. Peel off the two pieces of tape securing the gray WWAN antenna cable in place at the bottom side of CPU shielding cover and unroute the wireless antenna cables from the routing guides on the system board and the routing guides along the top side of the battery.

  • Page 35: Installing The Battery

    NOTE: The cables for the WLAN antennas are routed over the plastic bracket at the upper right corner and within the routing guides along the bottom right side of the battery. You must be careful when unrouting the antenna cables from their routing guides while they are still attached to the wireless card.
  • Page 36 Steps 1. Align and place the battery on the palm-rest assembly. 2. Replace the single (M1.6x3) screw and four (M2x4) screws to secure the battery to the palm-rest assembly. 3. Reconnect the battery cable to the connector on the system board. 4.

  • Page 37: Speakers

    12. Adhere the two pieces of tape securing the gray WWAN antenna cable in place at the bottom side of CPU shielding cover and route the wireless antenna cables in the routing guides on the system board and the routing guides along the top side of the battery.

  • Page 38: Installing The Left Speaker

    Installing the left speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the speaker and provides a visual representation of the installation procedure. Steps 1.

  • Page 39: Installing The Right Speaker

    About this task The following images indicate the location of the speaker and provide a visual representation of the removal procedure. Steps 1. Remove the single (M1.6x1.8) screw that secure the right speaker. 2. Lift the right speaker off the system. Installing the right speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 40: Wireless Local Area Network (Wlan) Antenna Module

    Steps 1. Align and place the right speaker in the slot on the system. 2. Replace the single (M1.6x1.8) screw that secure the right speaker to the system. Next steps 1. Install the battery. 2. Install the WWAN card. 3. Install the base cover.

  • Page 41: Installing The Wlan Antenna Module

    Steps 1. Remove the single (M1.6x1.8) screw securing the Proximity sensor bracket to the plam-rest assembly and lift the Proximity sensor bracket off the system. 2. Peel off the piece of tape securing the WLAN antenna module's proximity sensor cable in place. 3.
  • Page 42 Steps 1. Align and place the WLAN antenna module in the slot on the system. 2. Replace the two (M1.6x3) screws that secure the WLAN antenna module to the palm-rest assembly. 3. Connect the WLAN antenna module's Proximity sensor cable to the RF board and route the Proximity sensor cable in the routing guides.

  • Page 43: I/O Daughter Board

    I/O daughter board Removing the I/O daughter board Prerequisites 1. Follow the procedure in before working inside your computer. 2. Enter service mode. 3. Remove the card. 4. Remove the SIM card tray. 5. Remove the base cover. 6. Remove the heat sink.

  • Page 44: Installing The I/O Daughter Board

    5. Disconnect the I/O daughter board FPC cable from the I/O daughter board. Installing the I/O daughter 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 daughter board and provides a visual representation of the installation procedure.

  • Page 45: Power Button With Fingerprint Reader Assembly

    4. Install the SIM card tray. 5. Install the card. 6. Exit service mode. 7. Follow the procedure in After working on your computer. Power button with fingerprint reader assembly Removing the power button with fingerprint reader assembly Prerequisites NOTE: For system shipped with power button with fingerprint reader assembly only.

  • Page 46: Installing The Power Button With Fingerprint Reader Assembly

    Installing the power button with fingerprint reader assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicate the location of the power button and provide a visual representation of the installation procedure. Steps 1.
  • Page 47 2. Remove the card. 3. Remove the SIM card tray. 4. Remove the base cover. 5. Remove the solid-state drive 6. Remove the WWAN card. 7. Remove the heat sink. 8. Remove the battery. About this task 1. I/O daughter board cable connector 2.
  • Page 48 NOTE: Do not remove the system board together with the heat-sink, as this may damage the I/O daughter board, I/O daughter board FPC, and system board. The system features an I/O daughter board FPC which is connected to the system board underneath the heat-sink, as a result, the heat-sink must be removed first in order to disconnect the I/O daughter board FPC from the system board and then remove the system board.

  • Page 49: Installing The System Board

    NOTE: Flip open the display cable latch from the two tabs on the top side of the latch. Hold the left and right sides of the cable's connector head and gently disconnect the display cable in a direct upward motion to prevent damage to the connector.
  • Page 50 Steps 1. Align and place the system board on the palm-rest assembly. 2. Replace the four (M1.6x2.5) screws that secure the system board to the palm-rest assembly. 3. Replace the three (M2x4) screws that secures the USB Type-C bracket to the system board. 4.

  • Page 51: Ush Daughter Board

    13. Connect the display cable and camera cable to the connector on the system board. 14. Connect the display cable, and camera cable to the system board. 15. Connect the power button with fingerprint reader FPC cable to the connector on the system board (For the systems shipped with power button with fingerprint reader assembly).

  • Page 52: Installing The Ush Daughter Board

    Steps 1. Gently disconnect the power button with fingerprint reader FPC cable from the connector on the USH daughter board. 2. Peel off the USH daughter board FPC cable from the keyboard. 3. Remove the two (M1.2x2.5) screws securing the USH daughter board to the palm-rest assembly. 4.

  • Page 53: Wireless Wide Area Network (Wwan) Antenna Module

    Steps 1. Connect the USH daughter board FPC cable from USH daughter board. 2. Place the USH daughter board with the FPC cable in the slot on the system. 3. Replace the two (M1.2x2.5) screws securing the USH daughter board to the palm-rest assembly 4.

  • Page 54: Installing The Wwan Main Antenna Module

    6. Remove the heat sink. 7. Remove the display assembly. 8. Remove the battery. 9. Remove the I/O daughter board. 10. Remove the system board. 11. Remove the USH daughter board. About this task The following images indicate the location of the WWAN main antenna module and provide a visual representation of the removal procedure.

  • Page 55: Palm-Rest Assembly

    Steps 1. Align and place the WWAN main antenna module in the slot on the system. 2. Replace the four (M1.6x3) screws that secure the WWAN main antenna module to the palm-rest assembly. Next steps 1. Install the system board 2.

  • Page 56: Installing The Palm-Rest Assembly

    10. Remove the left speaker. 11. Remove the right speaker. 12. Remove the WLAN antenna module. 13. Remove the I/O daughter board. 14. Remove the power button with fingerprint reader assembly (for systems shipped with a fingerprint reader). 15. Remove the system board.
  • Page 57 Steps Place the palm-rest assembly on a flat surface. Next steps 1. Install the WWAN main antenna module. 2. Install the USH daughter board. 3. Install the system board 4. Install the power button with fingerprint reader (for systems shipped with a fingerprint reader). 5.

  • Page 58: Chapter 3: Software

    Downloading the drivers Steps 1. Turn on your computer. 2. Go to www.dell.com/support. 3. Enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model.

  • Page 59: Chapter 4: System Setup

    Boot menu Press <F12> when the Dell logo appears to initiate a one-time boot menu with a list of the valid boot devices for the system. Diagnostics and BIOS Setup options are also included in this menu. The devices that are listed on the boot menu depend on the bootable devices in the system.

  • Page 60: Navigation Keys

    Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can: ● Access System Setup by pressing F2 key ●...

  • Page 61: Overview

    ● Ownership Tag ● Signed Firmware Update - This helps to verify that only Dell Signed and released BIOS can be installed on the computer. Battery The Battery field provides battery and adapter related information: ●...

  • Page 62: Boot Configuration

    Table 4. BIOS Overview Page Options Description ● Microcode Version ● Intel Hyper-Threading Capable - This field helps identify if the CPU is capable of Hyper-Threading. ● 64-bit Technology - This field helps identify the CPU architecture. Memory The Memory field provides information related to the memory on the computer: ●...

  • Page 63: Integrated Devices

    Table 5. Boot Configuration: Options Description ● UEFI HTTPs Boot - Allows the user to manually add a Boot https. Secure Digital(SD) Card Boot This section contains a toggle switch that allows the user to enable or disable the option to allow the computer to boot from an SD Card.

  • Page 64: Storage

    (Disabled by default). Type-C Dock Override This section contains a toggle switch to enable or disable the option to use connected Type-C Dell Dock when keeping external USB ports disabled(Disabled by default). Video This section contains a toggle switch to enable or disable using Video on Dell external ports (Disabled by default).

  • Page 65: Display

    Table 7. Storage Options Description SATA Operation SATA Operation This section allows the user to select the operating mode of the integrated SATA hard drive controller. The following options are available: ● Disabled - SATA controllers are disabled. ● AHCI - SATA is configured in AHCI mode. ●...

  • Page 66: Connection

    ● Standard - Fully charge the battery at a standard rate. ● ExpressCharge - The battery may be charged over a shorter period using Dell's fast charging technology. ● Primarily AC use - The battery lifespan for users who primarily operate their system while plugged in to an external power source.
  • Page 67 This section contains a toggle switch to allow the user to enable or disable the option to wake on USB-C Dock. This feature allows the system to use a Dell USB-C Dock to wake the system from standby mode (ON by default).

  • Page 68: Security

    Table 10. Power (continued) Options Description Power On Lid Open This section contains a toggle switch to allow the user to enable or disable the system from powering on when the lid is open (ON by default). Intel Speed Shift Technology Intel Speed Shift Technology This section contains a toggle switch to allow the user to enable or disable Intel Speed Shift Technology support.

  • Page 69: Passwords

    Table 11. Security Options Description Chassis Intrusion This field controls the chassis intrusion feature ● Disabled - Will not report intrusions during POST ● Enabled - Will report intrusions during POST ● On-silent - Detects intrusions but does not display any detected intrusions during POST (Selected by default) Clear Intrusion Warning This section contains a toggle switch to enable/disable...
  • Page 70 (OFF by default). Allow Non-Admin PSID Revert This section controls the access to the Physical Security ID (PSID) revert of NVMe hard-drives from Dell Security Manager prompt OFF by default). System setup...

  • Page 71: Update Recovery

    OS recovery if the main operating system fails to boot with a set number of failures (ON by default). Dell Auto OS Recovery Threshold Dell Auto OS Recovery Threshold This field allows the user to select the number of failed boot attempts by the system before SupportAssist OS Recovery is triggered.

  • Page 72: Keyboard

    Table 14. System Management Options Description Asset Tag This field provides the asset tag which is a unique and up to 64-character identification that can be set by the IT administrator. AC Behaviour Wake on AC This field contains a toggle switch which allows the user to enable or disable the feature where the system boots when charger is detected (OFF by default).

  • Page 73: Pre-Boot Behavior

    Table 15. Keyboard Options Description ● Lock Mode Standard - Traditional F1-F12 functions ● Lock Mode Secondary - Enables secondary functions on the Fn keys (selected by default) Keyboard Illumination Keyboard Illumination This field allows the user to set the keyboard illumination settings.

  • Page 74: Virtualization

    Table 16. Pre-boot Behavior Options Description Adapter Warnings Enable Adapter Warnings This field contains a toggle switch to enable or disable warning messages during boot when adapters with low power capacity are detected (enabled by default). Warning and Errors Warning and Errors This field allows the user to enable or disable boot process to be paused only when warnings or errors are detected.

  • Page 75: Performance

    Table 17. Virtualization Options Description Intel Virtualization Technology Enable Intel Virtualization Technology(VT) This field contains a toggle switch to enable or disable Virtualization to run Virtual machine monitor(VMM) (enabled by default). VT for Direct I/O Enable Intel VT for Direct I/O This field allows the user to enable or disable the system from being able to perform VT for Direct I/O (enabled by default).

  • Page 76: System Logs

    Steps 1. Restart the computer. 2. Go to Dell.com/support. ● Enter the Service Tag or Express Service Code and click Submit. ● Click Detect Product and follow the instructions on screen. 3. If you are unable to detect or find the Service Tag, click Choose from all products.

  • Page 77: Updating Bios On Systems With Bitlocker Enabled

    3. Insert the USB flash drive into the system that requires the BIOS update. 4. Restart the system and press F12 when the Dell splash logo appears to display the One Time Boot Menu. 5. Using arrow keys, select USB Storage Device and click Enter.

  • Page 78: System And Setup Password

    Figure 1. DOS BIOS Update Screen System and setup password Table 20. System and setup password Password type Description System password Password that you must enter to log on to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer.

  • Page 79: Deleting Or Changing An Existing System Setup Password

    ExpressSign-in On Dell Latitude systems, the proximity sensor is accessed when the system is ON or in the sleep mode. The valid state of the proximity sensor is Near, and Enable with external monitor. The proximity feature is automatically disabled while the laptop is in the On state, and the remaining battery of the laptop is less than 30 minutes.
  • Page 80 ExpressSign-in user interface in external monitor usage state When one or more external monitor(s) are connected to the system and Near or Away state is enabled, the Dell ExpressSign- inwindow is displayed on the primary monitor, and you can select Yes or No to enable or disable the proximity sensor.
  • Page 81 Lock timer The lock timer is the approximate time for Dell Express Sign-in to identify that the user is no longer in front of the system or within the FoV. This feature will recognize your physical absence and lock the system.
  • Page 82 Table 25. Supported hinge angles System with status Supported hinge angle Illustration Clamshell 60˚ to 150˚ Stand 210˚ to 300˚ Tablet Not supported Tent Not supported System setup...

  • Page 83: Chapter 5: Troubleshooting

    Check diagnostics About this task SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell SupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to: ●...
  • Page 84 Indicates the power and battery-charge status. Solid white — Power adapter is connected and the battery has more than 5 percent charge. Amber — Computer is running on battery and the battery has less than 5 percent charge. ● Power adapter is connected and the battery is fully charged. ●...

  • Page 85: Diagnostic Error Messages

    CACHE DISABLED DUE TO FAILURE The primary cache internal to the microprocessor has failed. Contact Dell CD DRIVE CONTROLLER FAILURE The optical drive does not respond to commands from the computer.
  • Page 86 Then, shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive. Run the Hard Disk Drive tests in Dell Diagnostics. INSERT BOOTABLE MEDIA The operating system is trying to boot to non-bootable media, such as an optical drive.
  • Page 87 The operating system cannot find a specific track on the hard drive. SHUTDOWN FAILURE A chip on the system board may be malfunctioning. Run the System Set tests in Dell Diagnostics. If the message reappears, Contact Dell. TIME-OF-DAY CLOCK LOST POWER System configuration settings are corrupted. Connect your computer to an electrical outlet to charge the battery.

  • Page 88: System Error Messages

    The computer failed to complete the boot routine three system have failed at checkpoint [nnnn]. For consecutive times for the same error. help in resolving this problem, please note this checkpoint and contact Dell Technical Support CMOS checksum error RTC is reset, BIOS Setup default has been loaded.

  • Page 89: 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 28. 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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