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Dell Latitude 3140 Service Manual

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Latitude 3140/Latitude 3140 2-in-1
Service Manual
Regulatory Model: P32T/P33T
Regulatory Type: P32T002/P33T002
June 2023
Rev. A01

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Summary of Contents for Dell Latitude 3140

  • Page 1 Latitude 3140/Latitude 3140 2-in-1 Service Manual Regulatory Model: P32T/P33T Regulatory Type: P32T002/P33T002 June 2023 Rev. A01...
  • 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

    BitLocker..................................8 Chapter 2: Removing and installing components................9 Recommended tools................................9 Screw list....................................9 Major components of Latitude 3140/Latitude 3140 2-in-1..................10 Disassembly and reassembly ............................12 Palm-rest and keyboard..............................12 Subscriber Identification Module (SIM) card......................17 Wireless Wide Area Network (WWAN) card......................18 M.2 solid-state drive..............................20...
  • Page 4 Updating the BIOS from the F12 One Time Boot menu................... 102 Chapter 5: Troubleshooting....................... 103 Handling swollen rechargeable Li-ion batteries......................103 Dell SupportAssist Pre-boot System Performance Check diagnostics.............. 103 Running the SupportAssist Pre-Boot System Performance Check.............. 104 Built-in self-test (BIST)..............................104 M-BIST..................................104 LCD Power rail test (L-BIST)..........................

  • Page 5: 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 6: Electrostatic Discharge-Esd Protection

    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.

  • Page 7: Transporting Sensitive Components

    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: Exiting Service Mode

    If the recovery key is not known, this can result in data loss or an unnecessary operating system reinstall. For more information about updating the BIOS with Bitlocker enabled, search in the Knowledge Base at www.dell.com/support. CAUTION: If BitLocker is not suspended, replacing parts like the system board or storage drives on a system with BitLocker or device-encryption enabled will also trigger the encryption and lock the user out.

  • Page 9: 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 and #1 ● T6 Torx screwdriver (for 2-in-1s with WWAN support) ●...

  • Page 10: Major Components Of Latitude 3140/Latitude 3140 2-In-1

    M2x3 M2x4 System board (Laptop) M2x3 M2x4 World-facing camera (2-in-1) M2.5x2.5 WLAN antenna cable bracket M2x3 Major components of Latitude 3140/Latitude 3140 2- in-1 The following image shows the major components of Latitude 3140/Latitude 3140 2-in-1. Removing and installing components...
  • Page 11 Removing and installing components...

  • Page 12: Disassembly And Reassembly

    20. 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.
  • Page 13 Removing and installing components...
  • Page 14 1. Loosen the nine captive screws that secure the palm-rest assembly to the computer chassis. NOTE: For laptops without WWAN support, use a Phillips screwdriver to loosen the captive screws. For 2-in-1s with WWAN support, use a T6 Torx screwdriver to loosen the captive screws. 2.
  • Page 15 Installing the palm-rest and keyboard If you are replacing a component, remove the existing component before performing the installation procedure. The following images indicate the location of the palm-rest and keyboard, and provide a visual representation of the installation procedure. Removing and installing components...
  • Page 16 1. Connect the battery cable, keyboard Flexible Printed Circuits (FPC), and touchpad Flexible Flat Cable (FFC) to the system board. 2. Place the palm-rest assembly and the keyboard on the computer chassis. 3. Align and place the base cover on the computer, and snap the base cover latches into place. 4.

  • Page 17: Subscriber Identification Module (Sim) Card

    Subscriber Identification Module (SIM) card Removing a SIM-card (2-in-1) 1. Follow the procedure in before working inside your computer. 2. Remove the palmrest and keyboard assembly. NOTE: The following steps are for computers with WWAN support. The WWAN card must be installed for WWAN support. The following images indicate the location of the SIM-card slot and provide a visual representation of the removal procedure.

  • Page 18: Wireless Wide Area Network (Wwan) Card

    1. Lift open the cover of the SIM-card slot, then place the SIM-card in the slot. 2. Close the cover of the SIM-card slot, making sure that it is locked into position. 1. Install the palmrest and keyboard assembly. 2. Follow the procedure in after working inside your computer.
  • Page 19 1. Remove the single screw (M2x3) that secures the WWAN-card bracket to the system board. 2. Remove the WWAN-card bracket and disconnect the black and white antenna cables from the WWAN card. 3. Slide and remove the WWAN card from the WWAN-card slot on the system board. Installing the WWAN card (2-in-1) If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 20: M.2 Solid-State Drive

    1. Align the notch on the WWAN card with the tab on the WWAN-card slot, then slide the card into the slot. 2. Connect the gray and white antenna cable to the M connector on the WWAN card, then connect the gray and black antenna cable to the D/G connector on the WWAN card.
  • Page 21 1. Remove the two screws (M2x3) that secure the SSD thermal plate then remove the thermal plate from the SSD. 2. Slide and remove the SSD from the M.2 card slot on the system board. Installing the solid-state drive If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: The following steps are for computers that are shipped with an M.2 solid-state drive (SSD).

  • Page 22: Speakers

    1. Align the notch on the SSD with the tab on the M.2 card slot and slide the SSD into the slot on the system board. 2. Replace the SSD thermal plate, press to fit it firmly to cover the SSD. 3.
  • Page 23 1. Disconnect the speaker cable from the connector on the system board. 2. Remove the adhesive tapes that secure the speaker cable to the system board. 3. Unroute the speaker cable from the routing channel. 4. Lift and remove the speakers from their slots on the computer chassis. Installing the speaker (Laptop) If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 24 2. Route the speaker cable through the routing channel. 3. Affix the adhesive tapes to secure the speaker cable on the system board. 4. Connect the speaker cable to the connector on the system board. 1. Install the palmrest and keyboard assembly.

  • Page 25: Coin-Cell Battery

    1. Using the alignment posts and rubber grommets, replace the speaker into the slots on the computer chassis. 2. Route the speaker cable through the routing channel. 3. Affix the adhesive tapes to secure the speaker cable on the system board. 4.
  • Page 26 1. Disconnect the coin cell battery cable from the connector on the system board. 2. Pry the coin cell battery to release it from the adhesive. 3. Lift and remove it from the computer chassis. Installing the coin-cell battery If you are replacing a component, remove the existing component before performing the installation procedure. If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 27: Audio Board

    1. Place the coin cell battery into the slot on the computer chassis. 2. Connect the coin cell battery cable to the connector on the system board. 1. Install the palmrest and keyboard assembly. 2. Follow the procedure in after working inside your computer.

  • Page 28: Battery

    1. Using the alignment posts, replace the audio board into the slots on the computer chassis. 2. Replace the two screws (M2x3) that secure the audio board to the computer chassis. 3. Connect the audio cable to the connector on the system board. 1.
  • Page 29 ● 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 rechargeable Li-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell.
  • Page 30 1. Peel off the adhesive tapes that secure the 3-cell battery to the computer chassis. 2. Unroute the battery cable from the routing channels between the system board and 3-cell battery. 3. Remove the two screws (M2x3) that secure the two battery brackets to the computer chassis. 4.
  • Page 31 1. Align and replace the 3-cell battery into the computer chassis. 2. Route the battery cable through the routing channels between the system board and 3-cell battery. 3. Affix the adhesive tapes to secure the 3-cell battery to the computer chassis. 4.
  • Page 32 2. Follow the procedure in after working inside your computer. Removing the 4-cell battery 1. Follow the procedure in before working inside your computer. 2. Remove the palmrest and keyboard assembly. NOTE: The following steps are for computers that are shipped with a 4-cell battery. NOTE: If the battery is disconnected from system board, there is delay during computer boot as the computer undergoes Real Time Clock (RTC) reset.

  • Page 33: Power-Adapter Port

    1. Align and replace the 4-cell battery into the computer chassis. 2. Route the battery cable through the routing channels between the system board and 4-cell battery. 3. Affix the adhesive tapes to secure the 4-cell battery to the computer chassis. 4.
  • Page 34 1. Disconnect the power-adapter port cable from the system board. 2. Remove the two screws (M2x4) that secure the power-adapter port to the computer chassis. 3. Lift and remove the power-adapter port from the computer chassis. Installing the power-adapter port If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 35: World-Facing Camera (2-In-1)

    World-facing camera (2-in-1) Removing the world-facing camera (2-in-1) NOTE: The following world-facing camera removal procedure is applicable to Latitude 3140 2-in-1 only. CAUTION: This is a fragile component. Handle with care. 1. Follow the procedure in before working inside your computer.
  • Page 36 3. Lift and remove the world-facing camera module from the computer chassis. Installing the world-facing camera (2-in-1) NOTE: The following world-facing camera installing procedure is applicable to Latitude 3140 2-in-1 only. CAUTION: This is a fragile component. Handle with care.

  • Page 37: Heat Sink

    1. Insert the world-facing camera module into the slot on the computer chassis. 2. Replace the single screw (M2.5x2.5) to secure the world-facing camera module to the computer chassis. 3. Connect the world-facing camera cable to the connector on the camera module. 1.
  • Page 38 1. Remove the four screws (M2x3) that secure the heat-sink assembly to the system board. 2. Lift and remove the heat-sink assembly from the system board. Installing the heat-sink assembly If you are replacing a component, remove the existing component before performing the installation procedure. The following image indicates the location of the heat-sink assembly and provides a visual representation of the installation procedure.

  • Page 39: System Board

    1. Align and replace the heat-sink assembly into its slot on the system board. 2. Replace the four screws (M2x3) to secure the heat-sink assembly to the system board. 1. Install the palmrest and keyboard assembly. 2. Follow the procedure in after working inside your computer.
  • Page 40 1. Power-adapter port connector 2. Display-cable connector 3. Solid-State Drive slot 4. WLAN module 5. Audio-board cable connector 6. Speaker-cable connector 7. Coin-cell battery cable 8. Touchpad Flexible Flat Cable (FFC) connector 9. Keyboard Flexible Printed Circuits (FPC) connector 10. Battery-cable connector The following images indicate the location of the system board and provide a visual representation of the removal procedure.
  • Page 41 1. If your computer has a USB-C port, remove the two screws (M2x4) that secure the USB-C bracket to the system board. Lift and remove the USB-C bracket from the system board. 2. Remove the single screw (M2x3) that secures the display-cable bracket to the system board. Lift and remove the display- cable bracket from the system board.
  • Page 42 6. Lift and remove the WLAN antenna cable bracket from the system board. 7. Disconnect the two antenna cables that are connected to the WLAN module on the system board. 8. Disconnect the coin cell battery cable from the connector on the system board. 9.
  • Page 43 1. Power-adapter port connector 2. Display-cable connector 3. Solid-State Drive slot 4. WLAN module 5. Audio-board cable connector 6. Speaker-cable connector 7. Coin-cell battery cable 8. Touchpad Flexible Flat Cable (FFC) connector 9. Keyboard Flexible Printed Circuits (FPC) connector 10. Battery-cable connector The following images indicate the location of the system board and provide a visual representation of the installation procedure.
  • Page 44 This computer is offered with a configuration that utilizes an on-board storage where the UFS storage is part of the system board assembly. In the event the computer requires a system board replacement, all data stored locally on the computer will be lost and will no longer be recoverable.
  • Page 45 NOTE: Dell is not responsible for backing up the customer's data. The customer is responsible for the data on their own computer and keeping any backups of the files. 1. Replace the system board into the computer chassis. 2. Replace the five screws (M2x3) that secure the system board to the computer chassis.
  • Page 46 1. Power-adapter port connector 2. Display-cable connector 3. Solid-State Drive slot 4. Touch-display connector 5. World-facing camera cable connector 6. WWAN-card slot 7. SIM-card slot 8. Audio-board cable connector 9. Speaker-cable connector 10. Coin-cell battery cable 11. Touchpad Flexible Flat Cable (FFC) connector 12.
  • Page 47 Removing and installing components...
  • Page 48 1. If your computer has a USB-C port, remove the two screws (M2x4) that secure the USB-C bracket to the system board. Lift and remove the USB-C bracket from the system board. 2. Remove the single screw (M2x3) that secures the display-cable bracket to the system board. Lift and remove the display- cable bracket from the system board.
  • Page 49 Installing the system board (2-in-1) If you are replacing a component, remove the existing component before performing the installation procedure. The following image indicates the connectors on your system board. 1. Power-adapter port connector 2. Display-cable connector 3. Solid-State Drive slot 4.
  • Page 50 7. SIM-card slot 8. Audio-board cable connector 9. Speaker-cable connector 10. Coin-cell battery cable 11. Touchpad Flexible Flat Cable (FFC) connector 12. Keyboard Flexible Printed Circuits (FPC) connector 13. Battery-cable connector The following images indicate the location of the system board and provide a visual representation of the installation procedure. Removing and installing components...
  • Page 51 BIOSConnect OS Recovery, provided that Internet connection is available. NOTE: Dell is not responsible for backing up the customer's data. The customer is responsible for the data on their own computer and keeping any backups of the files. 1. Replace the system board into the computer chassis.

  • Page 52: Display Assembly

    5. Follow the procedure in after working inside your computer. Display assembly Removing the display assembly (Laptop) 1. Follow the procedure in before working inside your computer. 2. Remove the palmrest and keyboard assembly. The following images indicate the location of the display assembly and provide a visual representation of the removal procedure. Removing and installing components...
  • Page 53 1. Remove the single screw (M2x3) that secures the WLAN antenna cable bracket to the system board. 2. Lift and remove the WLAN antenna cable bracket from the system board. 3. Disconnect the two antenna cables that are connected to the WLAN module on the system board. 4.
  • Page 54 7. Remove the single (M2x4) screw and six (M2.5x5) screws that secure the display assembly to the computer chassis. 8. Lift and remove the display assembly from the computer chassis. Installing the display assembly (Laptop) If you are replacing a component, remove the existing component before performing the installation procedure. The following image indicates the location of the display assembly and provides a visual representation of the installation procedure.
  • Page 55 Removing and installing components...
  • Page 56 1. Align and place the display assembly on the computer chassis. 2. Replace the single (M2x4) screw and six (M2.5x5) screws that secure the display assembly to the computer chassis. 3. Connect the display cable to the connector on the system board. Close the latch to secure the cable. 4.
  • Page 57 Removing and installing components...
  • Page 58 1. Remove the single screw (M2x3) that secures the WLAN antenna cable bracket to the system board. 2. Lift and remove the WLAN antenna cable bracket from the system board. 3. Disconnect the two antenna cables that are connected to the WLAN module on the system board. 4.
  • Page 59 Installing the display assembly (2-in-1) If you are replacing a component, remove the existing component before performing the installation procedure. The following image indicates the location of the display assembly and provides a visual representation of the installation procedure. Removing and installing components...

  • Page 60: Touch-Panel Assembly (2-In-1)

    3. Remove the display assembly. NOTE: The following touch-panel assembly removal procedure is applicable to Latitude 3140 2-in-1 only. The following images indicate the location of the touch-panel assembly and provide a visual representation of the removal procedure. Removing and installing components...
  • Page 61 Image: Touch-panel assembly removal Removing and installing components...
  • Page 62 Image: Touch-panel assembly removal 1. Place the display assembly on a flat surface. Open the display hinge caps to 90 degrees and open the display hinges to 180 degrees. 2. Open the display-hinge caps to 180 degrees and place the display hinges over the edge of the table. 3.
  • Page 63 If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: The following touch-panel assembly installation procedure is applicable to Latitude 3140 2-in-1 only. The following image indicates the location of the touch panel assembly and provides a visual representation of the installation procedure.
  • Page 64 Image: Touch-panel assembly installation Removing and installing components...

  • Page 65: Display Bezel (Laptop)

    Display bezel (Laptop) Removing the display bezel (Laptop) NOTE: The following display bezel removal procedure is applicable to Latitude 3140 laptops only. 1. Follow the procedure in before working inside your computer. 2. Remove the palmrest and keyboard assembly.
  • Page 66 1. Remove the four screws (M2.5x3.8) that secure the display bezel to the display assembly. NOTE: The bezel screws are covered with disposable mylar stickers that are not reusable. To remove them, use a Phillips screwdriver to puncture through each sticker and to reach each of the four screws that secure the display bezel Removing and installing components...
  • Page 67 to the display assembly. 2. Use a plastic scribe to carefully pry open the recesses near the left and right hinges on the bottom edge of the display bezel. 3. Use the scribe to pry open the top, left, and right sides of the display bezel. NOTE: Pry the touch-panel from the recesses located in the U-shaped indents near the hinges.
  • Page 68 If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: The following display bezel installation procedure is applicable to Latitude 3140 laptops only. The following images indicate the location of the display bezel and provide a visual representation of the installation procedure.

  • Page 69: Display Panel

    NOTE: When replacing the new display bezel, adhere the new stickers over the screws once the screws have been secured. Align the display bezel with the display assembly. Gently snap the display bezel into place. 2. Replace the four screws (M2.5x3.8) to secure the display bezel on the display assembly. 1.
  • Page 70 1. Remove the four screws (M2x2.5) that secure the display panel on the display assembly. 2. Gently flip over the display panel. 3. Peel off the mylar tape that secures the display cable on the rear of the display panel. 4.
  • Page 71 The following images indicate the location of the display panel and provide a visual representation of the installation procedure. 1. Connect the display cable on the connector on the display panel. 2. Affix the rubber sticker on the display cable connector. 3.

  • Page 72: User-Facing Camera

    4. Follow the procedure in after working inside your computer. User-facing camera Removing the user-facing camera 1. Follow the procedure in before working inside your computer. 2. Remove the palmrest and keyboard assembly. 3. Remove the display assembly for laptops, or display assembly for 2-in-1s.

  • Page 73: Display Cable

    1. Insert the front-facing camera module into the slot on the display cover. 2. Connect the display cable to the front-facing camera module. 1. Install the display panel. 2. For laptops, install the display bezel; for 2-in-1 computers, install the touch-panel assembly.
  • Page 74 1. Disconnect the display cable from the user-facing camera module. 2. Peel off the tape from the left hinge that secures the display cable. 3. Unroute the display cable from the routing channel on the bottom-left side of the display cover. 4.

  • Page 75: Display Hinges

    1. Align and affix the display cable on the display cover. 2. Route the display cable through the routing channel on the bottom-left side of the display cover. 3. Affix the tape to the left hinge to secure the display cable. 4.
  • Page 76 1. Peel off the tape from the left hinge that secures the display cable. 2. Peel off the tape from the right hinge that secures the WLAN antenna cables. 3. For laptops, remove the two (M2x2.5) screws and four (M2.5x2.5) screws that secure the display hinges to the display assembly.
  • Page 77 6. Remove the display hinges from the display assembly. NOTE: For 2-in-1s, the display hinges and hinge caps work in tandem to rotate. First rotate the hinges 90-degrees downward (to a 180-degree angle) to unlock the hinge caps. Once the hinges are in the unlock position, the hinge caps can be rotated to the desired angle. Removing and installing components...
  • Page 78 Installing the display hinge If you are replacing a component, remove the existing component before performing the installation procedure. The following image indicates the location of the display hinge and provides a visual representation of the installation procedure. Removing and installing components...

  • Page 79: Display Back-Cover

    1. Align and place the display hinges on the display assembly. 2. For laptops, replace the two (M2x2.5) screws and four (M2.5x2.5) screws to secure the display hinges to the display assembly. 3. For 2-in-1 computers, replace the six (M2.5x2.5) screws and four (M2x2) screws to secure the display hinges to the display assembly.

  • Page 80: Base-Cover Assembly

    8. Remove the display hinges. After performing the preceding steps, you are left with the display cover assembly. 1. Install the display hinges. 2. Install the display cable. 3. Install the user-facing camera. 4. Install the display panel. 5. For laptops, install the display bezel;...
  • Page 81 1. Install the system board for laptops, or for system board 2-in-1s. 2. For 2-in-1s, install the world-facing camera. 3. Install the power adapter port. 4. Install the display assembly for laptops, or for display assembly 2-in-1s. 5. Install the 3-cell battery or the 4-cell battery...

  • Page 82: 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 83: Chapter 4: System Setup

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

  • Page 84: One Time Boot Menu

    Depending on your computer and its installed devices, the items that are listed in this section may or may not be displayed. Table 4. System setup options—Overview menu Overview Latitude 3140/Latitude 3140 2-in-1 BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer.
  • Page 85 Table 4. System setup options—Overview menu (continued) Overview Processor Information Processor Type Displays the processor type. Maximum Clock Speed Displays the maximum processor clock speed. Minimum Clock Speed Displays the minimum processor clock speed. Current Clock Speed Displays the current processor clock speed. Core Count Displays the number of cores on the processor.
  • Page 86 Enables the computer to boot using only validated boot software. By default, the Enable Secure Boot option is enabled. For additional security, Dell Technologies recommends keeping the Secure Boot option enabled to ensure that the UEFI firmware validates the operating system during the boot process.
  • Page 87 By default, the Video/Power only on Type-C Ports option is disabled. Type-C Dock Type-C Dock Override Enables or disables to use connected Type-C Dell Dock to provide data stream with external USB ports disabled. When Type-C Dock override is enabled, the Video/Audio/LAN submenu is activated.
  • Page 88 Table 6. System setup options—Integrated Devices menu (continued) Integrated Devices Enable Fingerprint Reader Device Enables the Fingerprint Reader Device option. By default, the Enable Fingerprint Reader Device option is enabled. Table 7. System setup options—Storage menu Storage SATA/NVMe Operation SATA/NVMe Operation Sets operating mode of the integrated SATA hard drive controller.
  • Page 89 USB Wake Support Wake on Dell USB-C Dock When enabled, connecting a Dell USB-C Dock wakes the computer from Standby, Hibernate, and Power Off. By default, the Wake on Dell USB-C Dock option is enabled. Block Sleep Enables or disables the computer from entering Sleep (S3) mode in the operating system.
  • Page 90 TPM On Allows you to enable or disable TPM. By default, the TPM On option is enabled. For additional security, Dell Technologies recommends keeping TPM enabled to allow these security technologies to fully function. Physical Presence Interface (PPI) Bypass The Physical Presence Interface (PPI) Bypass options can be used to allow for Enable Commands the operating system to manage certain aspects of the TPM.
  • Page 91 BIOS. This option returns to disabled state when the system restarts. By default, the Clear option is disabled. Dell Technologies recommends enabling the Clear option only when TPM data is required to be cleared. TPM State Enables or disables the Trusted Platform Module (TPM). This is the normal operating state for the Trusted Platform Module (TPM) when you want to use its complete array of capabilities.
  • Page 92 When set to Disabled, no notification is displayed and no event is logged in the BIOS Events log. By default, the Chassis Intrusion Detection option is enabled. For additional security, Dell Technologies recommends keeping the Chassis Intrusion Detection option enabled. Block Boot Until Cleared Enables or disables the Block Boot Until Cleared option.
  • Page 93 Table 11. System setup options—Security menu (continued) Security By default, the Absolute option is enabled. For additional security, Dell Technologies recommends keeping the Absolute option enabled. WARNING: The 'Permanently Disabled' option can only be selected once. When 'Permanently Disabled' is selected, Absolute Persistence cannot be re-enabled.
  • Page 94 Passwords ● The system password is not prompted when the computer resumes from standby mode. Dell Technologies recommends using the system password in situations where it is likely that a system may be lost or stolen. Hard Drive Password The Hard Drive Password can be set to prevent unauthorized access of the data stored on the hard drive.
  • Page 95 BIOS passwords. You can modify the minimum and maximum length of the passwords as well as require passwords to contain certain character classes (upper case, lower case, digit, special character). Dell Technologies recommends setting the minimum password length to at least 8 characters. Password Bypass The Password Bypass option allows the computer to reboot from the operating system without entering the system or hard drive password.
  • Page 96 Allows you to control the automatic boot flow for SupportAssist System Resolution Console and for Dell operating system Recovery Tool. By default, the Dell Auto OS Recovery Threshold value is set to 2. Table 14. System setup options—System Management menu...
  • Page 97 Table 14. System setup options—System Management menu (continued) System Management By default, the Auto On Time option is disabled. Table 15. System setup options—Keyboard menu Keyboard Fn Lock Options Enables or disables the Fn Lock option. By default, the Fn Lock option is enabled. Lock Mode By default, the Lock Mode Secondary option is enabled.
  • Page 98 This option is not available when the virtualization setting for IOMMU is disabled (VT-d/AMD Vi). By default, the Enable Pre-Boot DMA Support option is enabled. For additional security, Dell Technologies recommends keeping the Enable Pre- Boot DMA Support option enabled. NOTE: This option is provided only for compatibility purposes, since some older hardware is not DMA capable.
  • Page 99 Table 17. System setup options—Virtualization menu (continued) Virtualization Support Enable OS Kernel DMA Support Allows you to control the Kernel DMA protection for both internal and external ports. This option does not directly enable DMA protection in the operating system. For operating systems that support DMA protection, this setting indicates to the operating system that the BIOS supports the feature.

  • Page 100: System And Setup Password

    Table 19. System setup options—System Logs menu (continued) System Logs Clear BIOS Event Log Allows you to select option to keep or clear BIOS events logs. By default, the Keep Log option is selected. Thermal Event Log Clear Thermal Event Log Allows you to select option to keep or clear Thermal events logs.

  • Page 101: Deleting Or Changing An Existing System Setup Password

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

  • Page 102: Updating The Bios In Linux And Ubuntu

    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 103: 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 104: Running The Supportassist Pre-Boot System Performance Check

    Running the SupportAssist Pre-Boot System Performance Check 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 105: 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 106 (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 107: Diagnostic Error Messages

    HECI message. NOTE: Blinking 3-3-3 LEDs on Lock LED (Caps-Lock or Nums-Lock), Power button LED (without Fingerprint reader), and Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Pre-boot System Performance Check diagnostics. Diagnostic error messages Table 23.
  • Page 108 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 109 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 110: System Error Messages

    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. Troubleshooting...

  • Page 111: Real-Time Clock (Rtc Reset)

    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 112: Drain Residual Flea Power (Perform Hard Reset)

    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 113: 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 25. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app...

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