Dell Latitude 7400 Service Manual
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Dell Latitude 7400 Service Manual

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Dell Latitude 7400
Service Manual
Regulatory Model: P100G
Regulatory Type: P100G001
September 2021
Rev. A04

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Summary of Contents for Dell Latitude 7400

  • Page 1 Dell Latitude 7400 Service Manual Regulatory Model: P100G Regulatory Type: P100G001 September 2021 Rev. A04...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2016 - 2020 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 on your computer................... 6 Safety instructions................................6 Before working inside your computer........................6 Safety precautions.................................7 Electrostatic discharge—ESD protection........................7 ESD field service kit ..............................8 Transporting sensitive components.......................... 9 After working inside your computer..........................9 Chapter 2: Technology and components..................10 USB features..................................10 USB Type-C..................................12 HDMI 1.4a.....................................13...
  • Page 4 Installing the power adapter port..........................39 Speakers....................................40 Removing the speakers..............................40 Installing the speakers..............................42 LED board....................................44 Removing the LED daughterboard.......................... 44 Installing the LED daughterboard..........................45 Touchpad button board..............................46 Removing the touchpad button board........................46 Installing the touchpad button board........................47 Smart card reader................................
  • Page 5 Clearing CMOS settings..............................106 Clearing BIOS (System Setup) and System passwords..................106 Chapter 6: Troubleshooting....................... 107 Handling swollen Lithium-ion batteries........................107 Dell SupportAssist Pre-boot System Performance Check diagnostics.............. 108 Running the SupportAssist Pre-Boot System Performance Check.............. 108 Built-in self-test (BIST)..............................108 M-BIST..................................108 LCD Power rail test (L-BIST)..........................

  • Page 6: Chapter 1: Working On Your Computer

    Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

  • Page 7: Safety Precautions

    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 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: Transporting Sensitive Components

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. Lifting equipment Adhere to the following guidelines when lifting heavy weight equipment: CAUTION: Do not lift greater than 50 pounds.

  • Page 10: Chapter 2: Technology And Components

    Technology and components This chapter details the technology and components available in the system. Topics: • USB features • USB Type-C • HDMI 1.4a USB features Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral devices like mice, keyboards, external drivers, and printers.
  • Page 11 ● USB 2.0 previously had four wires (power, ground, and a pair for differential data); USB 3.0/USB 3.1 Gen 1 adds four more for two pairs of differential signals (receive and transmit) for a combined total of eight connections in the connectors and cabling.

  • Page 12: Usb Type-C

    USB Type-C USB Type-C is a new, tiny physical connector. The connector itself can support various exciting new USB standards like USB 3.1 and USB power delivery (USB PD). Alternate Mode USB Type-C is a new connector standard that is very small. It is about a third the size of an old USB Type-A plug. This is a single connector standard that every device should be able to use.

  • Page 13: Hdmi 1.4A

    Thunderbolt 3 over USB Type-C Thunderbolt 3 brings Thunderbolt to USB Type-C at speeds up to 40 Gbps, creating one compact port that does it all - delivering the fastest, most versatile connection to any dock, display or data device like an external hard drive. Thunderbolt 3 uses a USB Type-C connector/port to connect to supported peripherals.
  • Page 14 ● Automotive Connection System - New cables and connectors for automotive video systems, designed to meet the unique demands of the motoring environment while delivering true HD quality. Advantages of HDMI ● Quality HDMI transfers uncompressed digital audio and video for the highest, crispest image quality. ●...

  • Page 15: Chapter 3: Major Components Of Your System

    Major components of your system 1. Base cover 2. Power adaptor port Major components of your system...
  • Page 16 16. WWAN card 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 17: Chapter 4: 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: • Base cover • Battery • Coin cell • Memory • Solid state drive • WLAN card • WWAN card •...
  • Page 18 2. Use a plastic scribe to pry the base cover at the indents near the left and right hinges [1]. 3. Work along the edges to separate the base cover from the computer [2]. Removing and installing components...
  • Page 19 4. Lift and remove the base cover from the computer. Removing and installing components...

  • Page 20: Installing The Base Cover

    Installing the base cover 1. Align and place the base cover on the computer. 2. Press along the edges of the base cover until it clicks into the palmrest assembly. Removing and installing components...
  • Page 21 3. Tighten the eight captive screws to secure the base cover to the computer. Removing and installing components...

  • Page 22: Battery

    ● 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 23: Installing The Battery

    Installing the battery 1. Align and place the battery in the computer [1]. 2. Tighten the two captive screws [2] to secure the battery (4-Cell) to the computer. NOTE: A 3-Cell battery has single captive screw that secures the battery to the computer. 3.

  • Page 24: Coin Cell

    1. Install the base cover. 2. Follow the procedure after working inside your computer. Coin cell Removing the coin cell 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 1. Disconnect the LED daughterboard cable from the connector on the system board [1]. 2.
  • Page 25 3. Disconnect the coin cell cable from the connector on the system board [1]. 4. Remove the coin cell from the computer [2]. Removing and installing components...

  • Page 26: Installing The Coin Cell

    Installing the coin cell 1. Connect the coin cell cable to its connector on the system board [1] and adhere the coin cell to the palmrest [2]. Removing and installing components...
  • Page 27 2. Connect the LED board cable to the system board [1] and route the ribbon cable over the coin cell [2]. Removing and installing components...

  • Page 28: Memory

    1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer. Memory Removing the memory 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 1.

  • Page 29: Solid State Drive

    1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer. Solid state drive Removing the solid state drive 1. Follow the procedure in before working inside your computer. 2. Remove the base cover.
  • Page 30 3. Slightly lift and remove the SSD out from its connector on the system board. Removing and installing components...

  • Page 31: Installing The Solid State Drive

    Installing the solid state drive 1. Place the SSD on its slot and slide it to its connector on the system board. 2. Place the SSD plate pre-installed with thermal sticker on the underside over the SSD [1]. 3. Tighten the three captive screws to secure the SSD bracket to the palmrest [2]. Removing and installing components...

  • Page 32: Wlan Card

    NOTE: This procedure illustrates a M.2 2280 SSD. M.2 2230 SSD requires a special bracket and plate to secure it to the palmrest assembly. 1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer.

  • Page 33: Installing The Wlan Card

    Installing the WLAN card 1. Insert the WLAN card into its slot on the system board [1]. 2. Connect the antennae cables to the connectors on the WLAN card [2]. 3. Place the metal bracket over the antennae connectors [3]. 4.

  • Page 34: Wwan Card

    1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer. WWAN card Removing the WWAN card 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 1.

  • Page 35: Installing The Wwan Card

    Installing the WWAN card 1. Place the WWAN card into its connector on the system board [1]. 2. Connect the antennae cables to the connectors on WWAN card [2]. 3. Place the metal bracket over the antennae connectors on the WWAN card [3]. 4.

  • Page 36: Heatsink

    1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer. Heatsink Removing the heatsink fan assembly 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 4.

  • Page 37: Installing The Heatsink Assembly

    4. Remove the single screw securing the fan to heatsink. Installing the heatsink assembly NOTE: Heatsink and Fan are separately orderable parts. Install the single screw securing the fan to the heatsink. Removing and installing components...
  • Page 38 2. Place the heatsink fan assembly in the computer [1]. 3. Replace the two (M2x3) screws in sequence (2 > 1) on fan case and four (M2x3) screws in sequence (4 > 3 > 2 > 1) on the heatsink fan assembly [1]. 4.

  • Page 39: Power Adapter Port

    Power adapter port Removing the power adapter port 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 1. Remove the single (M2x3) screw from the metal bracket on the power adapter port [1]. 2.

  • Page 40: Speakers

    3. Replace the metal bracket over the power adapter port [1]. 4. Replace the single (M2x3) screw to secure the power adapter port to the palmrest assembly [2]. 1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer.
  • Page 41 4. Remove the four (M2x3) screws securing the speakers to the palmrest assembly [1]. 5. Lift and remove the speakers from the palmrest assembly [2]. Removing and installing components...

  • Page 42: Installing The Speakers

    Installing the speakers 1. Align and place the speakers into the palmrest assembly [1]. 2. Replace the four (M2x3) screws to secure the speakers to the palmrest assembly [2]. Removing and installing components...
  • Page 43 3. Adhere the tape to secure the speaker cable on the touchpad button board [1]. 4. Route the speaker cable [2] and connect the speaker cable to the connector on the system board [3]. Removing and installing components...

  • Page 44: Led Board

    1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer. LED board Removing the LED daughterboard 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 1.

  • Page 45: Installing The Led Daughterboard

    Installing the LED daughterboard 1. Align and place the LED daughterboard on the palmrest assembly [1]. 2. Replace the single (M2x3) screw securing the LED daughterboard to the palmrest assembly [2]. 3. Connect the LED daughterboard ribbon cable to the system board [3]. Removing and installing components...

  • Page 46: Touchpad Button Board

    1. Connect the speaker cable 2. Install the battery. 3. Install the base cover. 4. Follow the procedure after working inside your computer. Touchpad button board Removing the touchpad button board 1. Follow the procedure in before working inside your computer.

  • Page 47: Installing The Touchpad Button Board

    Installing the touchpad button board 1. Place the touchpad button board on the palmrest assembly [1]. 2. Replace the two (M2x2.5) screws to secure it to the palmrest assembly [2]. 3. Connect the touch pad button board cable to the touchpad module [3]. Removing and installing components...

  • Page 48: Smart Card Reader

    1. Install the speaker. 2. Install the battery. 3. Install the base cover. 4. Follow the procedure after working inside your computer. Smart card reader Removing the smart card reader 1. Follow the procedure in before working inside your computer. 2.

  • Page 49: Installing The Smart Card Reader

    Installing the smart card reader 1. Replace the smart card reader into its slot on the palmrest assembly [1]. 2. Replace the four (M2x2.5) screws securing it to the palmrest assembly [2]. 3. Connect the touchpad button board cable to the touchpad module [3]. 4.

  • Page 50: Display Assembly

    1. Install the speakers. 2. Install the SSD. 3. Install the battery. 4. Install the base cover. 5. Follow the procedure after working inside your computer. Display assembly Removing the display assembly 1. Follow the procedure in before working inside your computer.
  • Page 51 3. Lift the display cable [1] and unroute it from the metal bracket on the system board [2]. 4. Open the display lid 180 degrees. Removing and installing components...
  • Page 52 5. Remove the six (M2.5x4) screws [1] and remove the display assembly from the palmrest assembly [2]. Removing and installing components...

  • Page 53: Installing The Display Assembly

    Installing the display assembly 1. Replace the display assembly aligning the screw holes on the hinges with the screw holes on the palmrest assembly [1]. 2. Replace the six (M2.5x3.5) screws [2] to secure the display assembly to the computer [2]. 3.
  • Page 54 4. Route the display cable through the metal bracket [1] and place it on the system board [2]. 5. Connect the display cable to the connector on the system board [1]. 6. Install the display cable metal bracket [2] above the display cable connector and secure it the system board using a single (M2x3) screw [3].

  • Page 55: Hinge Caps

    1. Install the battery. 2. Install the base cover. 3. Follow the procedure after working inside your computer. Hinge caps Removing the hinge cap 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 4.

  • Page 56: Installing The Hinge Cap

    Installing the hinge cap 1. Slide the hinge cap towards the left hinge until it click locks on the display assembly [1]. 2. Close the hinges to 180 degrees to the display assembly [2]. Removing and installing components...

  • Page 57: Display Hinges

    1. Install the display assembly 2. Install the battery. 3. Install the base cover. 4. Follow the procedure after working inside your computer. Display hinges Removing the hinges 1. Follow the procedure in before working inside your computer. 2. Remove the base cover.
  • Page 58 2. Remove the four (M2.5x5) screws [1] securing the hinges to the display assembly. 3. Lift and remove the hinges from the display back cover assembly [2]. Removing and installing components...

  • Page 59: Installing The Hinges

    Installing the hinges 1. Align and place the hinges on the display assembly [1]. 2. Replace the four (2.5x5) screws to secure hinges to the display back cover assembly [2]. Removing and installing components...
  • Page 60 3. Route the antennae and display cable along the hinges. Removing and installing components...

  • Page 61: Display Bezel

    1. Install the hinge cap 2. Install the display assembly 3. Install the battery. 4. Install the base cover. 5. Follow the procedure after working inside your computer. Display Bezel Removing the display bezel 1. Follow the procedure in before working inside your computer.

  • Page 62: Installing The Display Bezel

    Installing the display bezel Place the display bezel on the display assembly and press along the edges to click lock it to the display back cover. 1. Install the hinges. 2. Install the hinge cap 3. Install the display assembly 4.
  • Page 63 NOTE: Do not pull and release the Stretch (SR) tapes from the display panel. There is no need to separate the brackets from the display panel. Peel back the tape [1] and flip open the latch [2] to disconnect the EDP cable from the display panel [3]. Removing and installing components...

  • Page 64: Installing The Display Panel

    Installing the display panel 1. Connect the EDP cable to the connector on the display panel [1] and close the actuator to secure the connector [2]. 2. Adhere the adhesive tape over the EDP connector on the display panel [3] and flip over the display panel on the back cover [4].
  • Page 65 3. Install the four (M2x2.5) screws [2] on the display panel to secure it to the back cover. Removing and installing components...

  • Page 66: Camera-Microphone Module

    1. Install the display bezel. 2. Install the hinges. 3. Install the hinge cap 4. Install the display assembly 5. Install the battery. 6. Install the base cover. 7. Follow the procedure after working inside your computer. Camera—microphone module Removing the camera—microphone module 1.

  • Page 67: Display Cable

    1. Install the display panel. 2. Install the hinges. 3. Install the display bezel. 4. Install the hinge cap 5. Install the display assembly 6. Install the battery. 7. Install the base cover. 8. Follow the procedure after working inside your computer.

  • Page 68: Installing The Display Cable

    Installing the display cable 1. Adhere the display cable along the routing channel on the display back cover assembly [1] . 2. Connect the display cable to the camera microphone module and replace the tape on the connector [2]. Removing and installing components...

  • Page 69: System Board

    1. Install the display panel. 2. Install the hinges. 3. Install the display bezel. 4. Install the hinge cap 5. Install the display assembly 6. Install the battery. 7. Install the base cover. 8. Follow the procedure after working inside your computer.
  • Page 70 3. Disconnect the display cable [1] and unroute it from the metal bracket on the system board [2]. 4. Remove the single (M2x4) screw [1] and remove the metal bracket over the WWAN Darwin antennae cable [2]. 5. Disconnect the power button (with finger print reader) cable from the system board [1]. 6.
  • Page 71 7. Remove the two (M2x4) screws [1] and lift up the USB Type-C bracket from the system board [2]. 8. Disconnect the coin cell [1], speaker cable [2] and the LED daughterboard cable [3] from the system board. Removing and installing components...
  • Page 72 9. Disconnect the USH daughterboard [1] and touchpad cables [2] from the system board. Removing and installing components...
  • Page 73 10. Remove the two (M2x2.5) screws on the DDR ESD bracket [1] and lift to remove it from the system board [2]. Removing and installing components...
  • Page 74 11. Remove the two (M2x4) screws [1] and remove the system board from the palmrest assembly [2]. NOTE: For models shipped with a fingerprint reader or WWAN antennas, there are three (M2x3) screws securing the system board to the computer. Removing and installing components...

  • Page 75: Installing The System Board

    Installing the system board 1. Align and place the system board in the palmrest assembly [1] 2. Replace the two (M2x4) screws on the system board securing it to the palmrest assembly [2]. Removing and installing components...
  • Page 76 NOTE: For models shipped with a fingerprint reader or WWAN antennas, there are three (M2x4) screws securing the system board to the computer. 3. Place the USB Type-C bracket [1] on the system board and secure it using two (M2x5) screws [2] to the system board. 4.
  • Page 77 5. Open the latch and connect the USH board cable [1] and the touchpad cable [2] to the system board. Removing and installing components...
  • Page 78 6. Connect the coin cell [1], speaker cable [2], and the LED daughterboard ribbon cable [3] to the system board. Removing and installing components...
  • Page 79 7. Install the metal bracket on the Darwin connector [1] and secure it to the palmrest using a single (M2x4) screw [2] to the system board. 8. Route the display cable through the metal bracket [1] and connect it to the system board [2]. Removing and installing components...
  • Page 80 9. Install the display cable bracket [1] on the EDP connector of the system board and secure it using a single (M2x3) screw [2]. 10. Connect the power button (with finger print reader) cable to the system board [1]. 11. Connect the Darwin WWAN antenna cables [2] to the the system board. 1.

  • Page 81: Power-Button Board

    4. Install the WLAN card. 5. Install the SSD. 6. Install the memory. 7. Install the battery. 8. Install the base cover. 9. Follow the procedure after working inside your computer. Power-Button Board Removing the power-button board 1. Follow the procedure in before working inside your computer.
  • Page 82 Figure 3. Power-button board without FPR Removing and installing components...

  • Page 83: Installing The Power-Button Board

    Figure 4. Removing the power-button board with FPR Installing the power-button board 1. Align and place the power-button board in to its slot on the plamrest assembly [1]. 2. Replace the two (M2x2.5) screws to secure the power-button board to the palmrest assembly [2]. Removing and installing components...
  • Page 84 Figure 5. Power-button board - without FPR Removing and installing components...

  • Page 85: Keyboard

    Figure 6. Installing the power-button board with FPR NOTE: Power-button board with finger print reader, has a cable that connects to the system board. 1. Install the system board. 2. Install the touchpad buttons. 3. Install the display assembly 4. Install the power adapter port.
  • Page 86 7. Remove the heatsink-fan assembly. 8. Remove the power adapter port. 9. Remove the display assembly. 10. Remove the system board. 11. Remove the coin cell. 12. Remove the power-button board. 1. Lift the latch and disconnect the keyboard cable [1] and the backlight cable [2] from the touchpad module. NOTE: This image shows disassembly of a carbon fiber variant, an Aluminum variant of this model has 21 M1.6x2 screws securing the keyboard assembly to palmrest.

  • Page 87: Installing The Keyboard

    Installing the keyboard NOTE: The keyboard has multiple snap points on the lattice side which must be pushed down firmly at the snap points in order to secure and fit it to the replacement keyboard. Align the keyboard to the keyboard support plate [1] and replace the two (M2x2) screws [2]. 2.

  • Page 88: Palmrest

    3. Connect the keyboard cable [3] and the backlight cable [4] to the touchpad module. 1. Install the power button. 2. Install the coin cell. 3. Install the system board. 4. Install the display assembly 5. Install the power adapter port.
  • Page 89 10. Remove the speaker. 11. Remove the display assembly. 12. Remove the touchpad buttons. 13. Remove the system board. 14. Remove the coin cell. 15. Remove the power button. 16. Remove the keyboard. 1. After removing these components, you are left with the palmrest assembly. 2.

  • Page 90: Chapter 5: System Setup

    System setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.

  • Page 91: One Time Boot Menu

    Table 2. Navigation keys (continued) Keys Navigation Enter Selects a value in the selected field (if applicable) or follow the link in the field. Spacebar Expands or collapses a drop-down list, if applicable. Moves to the next focus area. NOTE: For the standard graphics browser only.
  • Page 92 Table 3. General (continued) Option Description ○ Memory Available ○ Memory Speed ○ Memory Channel Mode ○ Memory Technology ○ DIMM A Size ○ DIMM B Size NOTE: Due to an amount of memory being assigned for system use, "Memory Available" is less than "Memory Installed".

  • Page 93: System Configuration

    USB keyboard and mouse always work in the BIOS setup irrespective of these settings. Dell Type-C Dock Configuration Allows you to connect to Dell WD and TB family of docks(Type-C Docks) independent of USB and thunderbolt adapter configuration. This option is enabled by default.
  • Page 94 Table 4. System Configuration (continued) Option Description ● Thunderbolt (Enabled by Defualt) ● Enable Thunderbolt Boot Support ● Enable Thunderbolt (and PCIe behind TBT) Pre-boot With following security levels : ● No Security ● User Authentication (Enabled by Defualt) ● Secure Connect ●...

  • Page 95: Video Screen Options

    Table 4. System Configuration (continued) Option Description ● 5 minute ● 15 minute ● Never NOTE: Option present on system opted with backlit keyboard. Keyboard Backlight Timeout on Battery This feature defines the timeout value for the keyboard backlight when the system is running only on battery power. Options are: ●...

  • Page 96: Security

    Table 5. Video (continued) Option Description Privacy Screen This option Enables or Disables the Privacy Screen if the Panel supports this feature. The options are: ● Disabled: When Disabled the privacy screen is not applied to the embedded display panel. ●...
  • Page 97 Table 6. Security (continued) Option Description Password Change Allows you to change the System password when the administrator password is set. ● Allow Non-Admin Password Changes This option is set by default. UEFI Capsule Firmware Allows you to update the system BIOS via UEFI capsule update packages. Updates ●...

  • Page 98: Secure Boot

    Table 6. Security (continued) Option Description This option is not set by default. Secure boot Table 7. Secure Boot Option Description Secure Boot Enable Allows you to enable or disable the Secure Boot Feature. ● Secure Boot Enable—Default Secure Boot Mode Changes to the Secure Boot operation mode modifies the behaviour of Secure Boot to allow evaluation of UEFI driver signatures.

  • Page 99: Performance

    Performance Table 9. Performance Option Description Multi Core Support This field specifies whether the process has one or all cores enabled. The performance of some applications improves with the additional cores. ● All—Default ● 1 ● 2 ● 3 Intel SpeedStep Allows you to enable or disable the Intel SpeedStep mode of processor.

  • Page 100: Post Behavior

    Configuration The options are: ● Adaptive—Default ● Standard - Fully charges your battery at a standard rate. ● ExpressCharge™- The battery charges over a shorter period of time using Dell’s fast charging technology. ● Primarily AC use ● Custom If Custom Charge is selected, you can also configure Custom Charge Start and Custom Charge Stop.

  • Page 101: Manageability

    Table 11. POST Behavior (continued) Option Description ● Enable Numlock—Default Fn Lock Options Allows you to let hot key combinations Fn + Esc toggle the primary behavior of F1–F12, between their standard and secondary functions. If you disable this option, you cannot toggle dynamically the primary behavior of these keys.

  • Page 102: Virtualization Support

    Table 12. Manageability (continued) Option Description MEBx Hotkey This option specifies whether the MEBx Hotkey function should be enabled when the system boots. Virtualization support Table 13. Virtualization Support Option Description Virtualization This option specifies whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities provided by the Intel Virtualization technology.

  • Page 103: System Logs

    For more information on this subject, see Knowledge Article: https:// www.dell.com/support/article/sln153694 1. Go to www.dell.com/support. 2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search. NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer.

  • Page 104: Updating The Bios In Linux And Ubuntu

    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 105: System And Setup Password

    2. Turn on the computer and press F12 to access the One-Time Boot Menu, select BIOS Update using the mouse or arrow keys then press Enter. The flash BIOS menu is displayed. 3. Click Flash from file. 4. Select external USB device. 5.

  • Page 106: Clearing Cmos Settings

    Clearing BIOS (System Setup) and System passwords 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 107: Chapter 6: 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 108: Dell Supportassist Pre-Boot System Performance Check Diagnostics

    Dell SupportAssist Pre-boot System Performance Check diagnostics 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.

  • Page 109: 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 110: System-Diagnostic Lights

    Management Engine (ME) error Recovering the operating system When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS Recovery. Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows operating system.

  • Page 111: Backup Media And Recovery Options

    You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at www.dell.com/serviceabilitytools.

  • Page 112: Chapter 7: Getting Help

    Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: 1. Go to Dell.com/support.

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