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Dell W21C Service Manual
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Dell W21C Service Manual

Dell W21C Service Manual

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Inspiron 24 3000 All-in-One
Service Manual
Computer Model: Inspiron 24-3477
Regulatory Model: W21C
Regulatory Type: W21C001

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Summary of Contents for Dell W21C

  • Page 1 Inspiron 24 3000 All-in-One Service Manual Computer Model: Inspiron 24-3477 Regulatory Model: W21C Regulatory Type: W21C001...
  • Page 2 WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2018 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 Before working inside your computer......10 ..................10 Before you begin ...................10 Safety instructions ................. 11 Recommended tools ....................12 Screw list After working inside your computer......14 Removing the stand............15 ....................15 Easel Stand ..................16 Pedestal stand Replacing the stand............18 ....................18 Easel stand ..................
  • Page 4 Replacing the hard drive..........24 ....................24 Procedure ..................24 Post-requisites Removing the system-board shield......25 ................... 25 Prerequisites ....................25 Procedure Replacing the system-board shield.......27 ....................27 Procedure ..................27 Post-requisites Removing the memory module........28 ....................28 Prerequisites ....................29 Procedure Replacing the memory module........30 ....................
  • Page 5 Replacing the antenna..........38 ....................38 Procedure ..................38 Post-requisites Removing the solid-state drive/Intel Optane....39 ................... 39 Prerequisites ....................40 Procedure Replacing the solid-state drive/ Intel Optane....41 ....................41 Procedure ..................42 Post-requisites Removing the media-card reader......... 43 ....................43 Prerequisites ....................43 Procedure Replacing the media-card reader.........
  • Page 6 Replacing the microphone..........51 ....................51 Procedure ..................51 Post-requisites Removing the camera..........52 ................... 52 Prerequisites ....................52 Procedure Replacing the camera..........55 ....................55 Procedure ..................55 Post-requisites Removing the coin-cell battery........56 ................... 56 Prerequisites ....................57 Procedure Replacing the coin-cell battery........
  • Page 7 Replacing the heat sink..........64 ....................64 Procedure ..................64 Post-requisites Removing the speakers..........65 ................... 65 Prerequisites ....................65 Procedure Replacing the speakers..........67 ....................67 Procedure ..................67 Post-requisites Removing the system board.........68 ................... 68 Prerequisites ....................68 Procedure Replacing the system board..........71 ....................
  • Page 8 Replacing the rubber feet..........84 ....................84 Procedure ..................84 Post-requisites Removing the middle frame......... 85 ................... 85 Prerequisites ....................86 Procedure Replacing the middle frame......... 89 ....................89 Procedure ..................89 Post-requisites Downloading drivers............. 91 ..............91 Downloading the audio driver .............
  • Page 9 ............107 Running the ePSA diagnostics ................107 Display built-in self test .................... 107 Diagnostics .................109 Flea power release .................. 109 Wi-Fi power cycle Getting help and contacting Dell......... 110 .................110 Self-help resources ..................111 Contacting Dell...

  • Page 10: Before Working Inside Your Computer

    Use the following safety guidelines to protect your computer from potential damage and ensure your personal safety. WARNING: Before working inside your computer, read the safety information that shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance.

  • Page 11: Recommended Tools

    CAUTION: You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that shipped with the product or at www.dell.com/...

  • Page 12: Screw List

    Screw list The following table provides the list of screws that are used for securing different components to the computer. Table 1. Screw list Component Secured to Screw type Quantity Screw image Stand System-board M3x5 shield Hard-drive Display- M3x5 bracket assembly base Hard-drive Hard drive...
  • Page 13 Component Secured to Screw type Quantity Screw image Retractable- Display- M3x5 camera assembly base assembly System board Display- M3x5 assembly base Wireless-card System board M2x2.5 shield Wireless card System board M2x2.5 Display panel Display- M3x5 assembly base Middle frame Display- M3x5 black assembly base Rubber feet...

  • Page 14: After Working Inside Your Computer

    After working inside your computer CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer. Replace all screws and ensure that no stray screws remain inside your computer. Connect any external devices, peripherals, or cables you removed before working on your computer.

  • Page 15: Removing The Stand

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Easel Stand CAUTION: Place the computer on a flat, soft, and clean surface to avoid scratches on the display.

  • Page 16: Pedestal Stand

    Lift and slide the stand from the system-board shield. Pedestal stand CAUTION: Place the computer on a flat, soft, and clean surface to avoid scratches on the display. Place the computer on a clean and flat surface. Extend the stand upward.
  • Page 17 Using your fingertips, pry the stand cover off the back cover. Remove the four screws (M3x5) that secure the stand bracket to the system- board shield. Lift the handle, and slide it out from the system-board shield.

  • Page 18: Replacing The Stand

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Easel stand Insert the tabs on the stand bracket into the slots on the system-board shield. Align the screw holes on the stand with the screw holes on the system-board shield.

  • Page 19: Removing The Back Cover

    Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisite Remove the stand.

  • Page 20: Procedure

    Procedure CAUTION: Do not remove the computer cover unless you must install or replace internal components on your computer. Use one hand to stabilize your computer, and use another hand to pull the back cover from the center to lift it off the display assembly base.

  • Page 21: Replacing The Back Cover

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure CAUTION: Make sure that no cables are caught between the back cover and the display-assembly base.

  • Page 22: Removing The Hard Drive

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive. CAUTION: To avoid data loss, do not remove the hard drive while the computer is in sleep or on state.
  • Page 23 Slide and lift the hard-drive assembly off the display-panel base. Remove the four screws (M3x3.5) that secure the hard-drive bracket to the hard drive. Lift the hard drive off the hard-drive bracket.

  • Page 24: Replacing The Hard Drive

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Hard drives are fragile. Exercise care when handling the hard drive. Procedure Place the hard drive in the hard-drive bracket with the label facing up.

  • Page 25: Removing The System-Board Shield

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 26 Use the handle to lift the system-board shield off the display-assembly base.

  • Page 27: Replacing The System-Board Shield

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Align the slots on the system-board shield with the ports on the system board and place the system-board shield on the display-assembly base.

  • Page 28: Removing The Memory Module

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.

  • Page 29: Procedure

    Procedure Locate the memory module on the system board. Using your fingertips, spread apart the securing clips at each end of the memory-module slot until the memory module pops up. Slide and remove the memory module from the memory-module slot. NOTE: Remove the DIMM1, and then remove the DIMM2.

  • Page 30: Replacing The Memory Module

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure NOTE: Replace the DIMM2, and then replace the DIMM1. Align the notch on the memory module with the tab on the memory-module slot.

  • Page 31: Removing The Wireless Card

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 32 Lift the wireless-card shield from the system board. Remove the screw (M2x2.5) that secures the wireless-card bracket and the wireless card to the system board. Slide the wireless-card bracket off the wireless card. Disconnect the antenna cables from the wireless card.
  • Page 33 Slide the wireless card out of the wireless-card slot.

  • Page 34: Replacing The Wireless Card

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Connect the antenna cables to the wireless card. The following table provides the antenna-cable color scheme for the wireless card supported by your computer: Table 2.

  • Page 35: Post-Requisites

    Replace the screw that secures the wireless-card bracket and the wireless card to the system board. Place the wireless-card shield on top of the wireless card. NOTE: There is a cut-out on the wireless-card shield for the antenna cables to come out. Align the screw holes on the wireless-card shield with the screw holes on the system board.

  • Page 36: Removing The Antenna

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 37 Peel off the antenna modules from the display-assembly base.

  • Page 38: Replacing The Antenna

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Adhere the antennas to the slot on the display-assembly base. Replace the two screws (M2x2.5) that secure antennas to the display-assembly base.

  • Page 39: Removing The Solid-State Drive/Intel Optane

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.

  • Page 40: Procedure

    Procedure Locate the solid-state drive/Intel Optane memory on the system board. Remove the screw (M2x3) that secures the solid-state drive/Intel Optane memory to the system board. Slide and remove the solid-state drive/Intel Optane memory from the M.2 slot.

  • Page 41: Replacing The Solid-State Drive/Intel Optane

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Solid-state drives are fragile. Exercise care when handling the solid-state drive. Procedure...

  • Page 42: Post-Requisites

    Align the notch on the solid-state drive/Intel Optane memory with the tab on the solid-state drive/Intel Optane memory slot. Slide the solid-state drive/Intel Optane memory firmly into the solid-state drive/ Intel Optane memory slot at an angle. Press the other end of the solid-state drive/Intel Optane memory and replace the screw (M2x3) that secures the solid-state drive/Intel Optane memory to the keyboard shield.

  • Page 43: Removing The Media-Card Reader

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 44 Lift the media-card reader board from the display-assembly base.

  • Page 45: Replacing The Media-Card Reader

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the media-card reader board on the display-assembly base. Using the alignment post, align the screw hole on the media-card reader board with the screw hole on the display-assembly base.

  • Page 46: Removing The Power-Button Board

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 47 Lift the power-button board, along with its cable, off the display-assembly base.

  • Page 48: Replacing The Power-Button Board

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment post, align the screw hole on the power-button board with the screw hole on the display-assembly base.

  • Page 49: Removing The Microphone

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 50 Lift the microphone boards off the display-assembly base.

  • Page 51: Replacing The Microphone

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Slide the microphone modules into the slots on the display-assembly base. Replace the two screws (M2x2.5) that secure the microphone modules to the display-assembly base.

  • Page 52: Removing The Camera

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 53 Note the routing of the camera cable, and remove it from the routing guides. Press the top of the retractable-camera assembly to extend the retractable camera. Remove the three screws (M3x5) that secure the retractable-camera bezel to the retractable-camera assembly.
  • Page 54 Lift the retractable-camera bezel off the retractable-camera assembly. Pull the clip on the retractable-camera assembly, and rotate the camera and camera bracket along with the camera cable, off the retractable-camera assembly.

  • Page 55: Replacing The Camera

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Place the camera and camera bracket in the slot on the retractable-camera assembly and snap it in place.

  • Page 56: Removing The Coin-Cell Battery

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Removing the coin-cell battery resets the BIOS setup program’s settings to default. It is recommended that you note the BIOS setup program’s settings before removing the coin-cell battery.

  • Page 57: Procedure

    Procedure Locate the coin-cell battery on the system board. Press the tab on the coin-cell battery socket until the coin-cell battery pops up. Lift the coin-cell battery out of the coin-cell battery socket.

  • Page 58: Replacing The Coin-Cell Battery

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure With the positive-side facing up, insert the coin-cell battery into the battery socket.

  • Page 59: Removing The Fan

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 60 Lift and slide the fan from under the heat sink.

  • Page 61: Replacing The Fan

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Slide the fan under the heat sink and place it on the display-assembly base. Align the screw holes on the fan with the screw holes on the display-assembly base.

  • Page 62: Removing The Heat Sink

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. WARNING: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to cool before you touch it.
  • Page 63 Lift the heat sink off the system board.

  • Page 64: Replacing The Heat Sink

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. CAUTION: Incorrect alignment of the heat sink can damage the system board and processor. NOTE: The original thermal grease can be reused if the original system board and heat sink are reinstalled together.

  • Page 65: Removing The Speakers

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 66 Lift the speaker (SPK2), along with the speaker cable, off the display-assembly base.

  • Page 67: Replacing The Speakers

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Using the alignment posts on the display-assembly base, place the speakers on the display-assembly base.

  • Page 68: Removing The System Board

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board.
  • Page 69 Open the latch, and disconnect the media-card reader cable from the system board. Disconnect the speaker cable from the system board. Open the latch, and disconnect the power-button board cable from the system board. Disconnect the display-backlight cable from the system board. Peel off the tape that secures the display cable from the connector on the system board.
  • Page 70 Lift the system board off the display-assembly base.

  • Page 71: Replacing The System Board

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board.

  • Page 72: Post-Requisites

    Follow these steps to flash the BIOS: Turn on your computer. Go to www.dell.com/support. Click Product support, 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 73: Removing The Display Panel

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 74 Remove the eight screws (M3x5) that secure the display-assembly base to the display assembly. Place the display-assembly base in its upright position. Push the display panel away from the display-assembly base. Slide the display cable and the touch-screen cable (optional) through the slots on the display-assembly base.
  • Page 75 Lift the display panel off the display-assembly base.
  • Page 76 After performing the above steps, you are left with the display panel.

  • Page 77: Replacing The Display Panel

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Note the positions of the four jig screws on the display panel. Place the display-assembly base in its upright position, and slide the display panel into the display-assembly base.
  • Page 78 Align the four jig screws on the display panel with the screw holes on the display- assembly base. Push the display panel into the slot on the display-assembly base. Place the display-assembly base on a clean and flat surface with the display panel facing down.
  • Page 79 In sequential order indicated on the image, replace the four screws (M3x5) that secure the display panel to the display-assembly base.
  • Page 80 Remove the four jig screws from the display panel. Replace the four screws (M3x5) that secure the display panel to the display- assembly base. 10 Connect the display-backlight cable to the display panel, and then connect the touch-screen cable (optional) to the system board. Push the securing clips inward, and connect the display cable to the system board.

  • Page 81: Post-Requisites

    Adhere the tape that secures the display cable to the connector on the system board. Post-requisites Replace the system-board shield. Replace the back cover. Replace the stand.

  • Page 82: Removing The Rubber Feet

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.
  • Page 83 Lift the rubber feet off the display-assembly base.

  • Page 84: Replacing The Rubber Feet

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Align the screw holes on the rubber feet with the screw holes on the display- assembly base.

  • Page 85: Removing The Middle Frame

    After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites Remove the stand. Remove the back cover.

  • Page 86: Procedure

    Procedure Remove the 13 screws (M3x5 black) that secure the middle frame to the display- assembly base. Slide and lift to release the tabs on the middle frame from the slots on the display-assembly base from the top.
  • Page 87 Lift and slide the middle frame off the display-assembly base.
  • Page 88 After performing the above steps, you are left with the middle frame.

  • Page 89: Replacing The Middle Frame

    After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Procedure Slide the middle frame onto the display-assembly base. Snap the middle frame and display-assembly base into place.
  • Page 90 Replace the hard drive. Replace the back cover. Replace the stand.

  • Page 91: Downloading Drivers

    Downloading drivers Downloading the audio driver Turn on your computer. Go to www.dell.com/support. Enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the autodetect feature or manually browse for your computer model.

  • Page 92: Downloading The Graphics Driver

    Downloading the graphics driver Turn on your computer. Go to www.dell.com/support. Enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the autodetect feature or manually browse for your computer model.

  • Page 93: Downloading The Chipset Driver

    Downloading the chipset driver Turn on your computer. Go to www.dell.com/support. Enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the autodetect feature or manually browse for your computer model.

  • Page 94: Downloading The Network Driver

    Downloading the network driver Turn on your computer. Go to www.dell.com/support. Enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the autodetect feature or manually browse for your computer model.
  • Page 95 If necessary, your computer starts to download and install SupportAssist. NOTE: Review on-screen instructions for browser-specific instructions. Click View Drivers for My System. Click Download and Install to download and install all driver updates detected for your computer. 10 Select a location to save the files. If prompted, approve requests from User Account Control to make changes on the system.

  • Page 96: System Setup

    Boot Sequence allows you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self Test (POST), when the Dell logo appears, you can: •...

  • Page 97: Bios Overview

    Keys Navigation Up arrow Moves to the previous field. Down arrow Moves to the next field. Enter Selects a value in the selected field (if applicable) or follow the link in the field. Spacebar Expands or collapses a drop‐down list, if applicable. Moves to the next focus area.

  • Page 98: System Setup Options

    During POST, when the DELL logo is displayed, watch for the F2 prompt to appear, and then press F2 immediately. NOTE: The F2 prompt indicates that the keyboard is initialized. This prompt can appear very quickly, so you must watch for it, and then press F2.
  • Page 99 Main AC Adapter Type Displays the power adapter type. System Memory Displays the total computer memory installed. Memory Speed Displays the memory speed. Table 4. System setup options—Advanced menu Advanced Advanced BIOS Features Intel(R)SpeedStep(TM) Enable or disable the Intel SpeedStep feature.
  • Page 100 Advanced Controlled this setting is not available and has no effect. Enable or disable BIOS recovery from BIOS Recovery from Hard Drive hard drive. Default: Enabled BIOS Auto-Recovery Enable or disable BIOS Auto-Recovery. Default :Disabled Integrity Check When enabled, BIOS checks the BIOS image integrity on every boot.
  • Page 101 SupportAssist System Resolution Auto OS Recovery Threshold Control the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery tool. The SupportAssist OS Recovery option SupportAssist OS Recovery will enable or disable the boot flow for SupportAssist OS Recovery tool in the event of certain system errors.
  • Page 102 Security System Password Allows you to set the system password. HDD Password Allows you to set the hard drive password. Password change Allows you determine whether changes to the System and Hard Disk passwords are permitted when an administrator password is set. Computrance Allows you to help track assets and provide recovery services in the event...

  • Page 103: Flashing The Bios

    Allows you to save your changes. Flashing the BIOS You may need to flash (update) the BIOS when an update is available or when you replace the system board. Follow these steps to flash the BIOS: Turn on your computer. Go to www.dell.com/support.
  • Page 104 Click Product support, 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. Click Drivers & downloads → Find it myself. Select the operating system installed on your computer.

  • Page 105: Troubleshooting

    Follow these steps to flash the BIOS: Turn on your computer. Go to www.dell.com/support. Click Product support, 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 106: Enhanced Pre-Boot System Assessment (Epsa) Diagnostics

    Press F12 after the Dell logo is displayed on the screen to access the boot menu. A Preparing one-time boot menu message appears. After the boot menu loads, select the USB recovery device under UEFI BOOT. The system reboots and a screen to Choose the keyboard layout is displayed.

  • Page 107: Running The Epsa Diagnostics

    Running the ePSA diagnostics Power-on the computer. As the computer boots, press the F12 key as the Dell logo appears. On the boot menu screen, select the Diagnostics option. Click the arrow key at the bottom left corner. Diagnostics front page is displayed.
  • Page 108 NOTE: See the light patterns to determine the device that is failing. Off – Computer is in hibernation or turned off. The power status light blinks amber along with beep codes indicating failures. For example, the power status light blinks amber two times followed by a pause, and then blinks white three times followed by a pause.

  • Page 109: Flea Power Release

    Flea power release Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has been removed. The following procedure provides the instructions on how to conduct flea power release: Turn off your computer.

  • Page 110: 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 9. Self-help resources Information about Dell products and www.dell.com services Dell Help & Support app Tips Contact Support In Windows search, type Contact Support, and press Enter.

  • Page 111: Contacting Dell

    Enter the Service Tag number or Product ID in the search bar. Contacting Dell To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell. NOTE: Availability varies by country and product, and some services may not be available in your country.

This manual is also suitable for:

Inspiron 24-3477Inspiron 24 3000 all-in-one

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