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Dell Inspiron 24 5421 Owner's Manual
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Dell Inspiron 24 5421 Owner's Manual

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Inspiron 24 5421 All-in-One
Owner's Manual
Regulatory Model: W29C
Regulatory Type: W29C001
March 2023
Rev. A00

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Summary of Contents for Dell Inspiron 24 5421

  • Page 1 Inspiron 24 5421 All-in-One Owner's Manual Regulatory Model: W29C Regulatory Type: W29C001 March 2023 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2023 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Retractable camera ................................13 Tilt......................................15 Inside view of your computer............................17 Retractable camera................................17 Chapter 2: Set up your computer....................19 Chapter 3: Specifications of Inspiron 24 5421 All-in-One............. 25 Dimensions and weight..............................25 Stand....................................25 Processor.....................................27 Chipset....................................28 Operating system................................28 Memory....................................28...
  • Page 4 Transporting sensitive components........................40 After working inside your computer........................40 BitLocker..................................40 Recommended tools................................. 40 Screw list....................................41 Major components of Inspiron 24 5421 All-in-One....................42 Chapter 5: Removing and installing Customer Replaceable Units (CRUs)........45 Stand....................................45 Removing the stand..............................45 Installing the stand..............................46 Back cover..................................
  • Page 5 Chapter 6: Removing and installing Field Replaceable Units (FRUs)..........74 Heat sink (integrated graphics)............................. 74 Removing the heat sink..............................74 Installing the heat sink..............................75 Heat sink (discrete graphics)............................76 Removing the heat sink..............................76 Installing the heat sink..............................77 Media-card reader................................78 Removing the media-card reader..........................78 Installing the media-card reader..........................
  • Page 6 Chapter 9: Troubleshooting......................115 Dell SupportAssist Pre-boot System Performance Check diagnostics...............115 Running the SupportAssist Pre-Boot System Performance Check............... 115 System-diagnostic lights..............................115 Recovering the operating system..........................117 Backup media and recovery options..........................117 WiFi power cycle................................118 Chapter 10: Getting help and contacting Dell................119...

  • Page 7: Chapter 1: Views Of Inspiron 24 5421 All-In-One

    Views of Inspiron 24 5421 All-in-One...

  • Page 8: Right

    Views of Inspiron 24 5421 All-in-One Right Views of Inspiron 24 5421 All-in-One...

  • Page 9: Front

    1. Retractable-camera assembly Enables you to videochat, capture photos, and record videos. This camera can be retracted to protect your privacy. 2. Display panel Provides visual output to the user. 3. Speakers Provides audio output. Views of Inspiron 24 5421 All-in-One...

  • Page 10: Bottom

    For more information, see the Troubleshooting section in the Service Manual at www.dell.com/support/manuals. 3. Service Tag label The Service Tag is a unique alphanumeric identifier that enables Dell service technicians to identify the hardware components in your computer and access warranty information. Views of Inspiron 24 5421 All-in-One...

  • Page 11: Back

    1. Back cover Removable chassis. 2. Back panel Connect USB, audio, video, and other devices. 3. Stand Allows the system to be mounted vertically. For more information on the rear ports, see Back panel. Views of Inspiron 24 5421 All-in-One...

  • Page 12: Back Panel

    NOTE: Set the BIOS Deep Sleep control to disabled to enable Wake up when the computer is powered off. 8. Universal audio jack Views of Inspiron 24 5421 All-in-One...

  • Page 13: Service Tag

    ● Secure Digital High Capacity (SDHC) ● Secure Digital Extended Capacity (SDXC) Service Tag The service tag is a unique alphanumeric identifier that allows Dell service technicians to identify the hardware components in your computer and access warranty information. Retractable camera...
  • Page 14 Turns on when the camera is in use. Retractable camera for computers shipped with FHD RGB camera 1. Camera Enables you to video chat, capture photos, and record videos. 2. Camera-status light Turns on when the camera is in use. Views of Inspiron 24 5421 All-in-One...

  • Page 15: Tilt

    Tilt Y stand Views of Inspiron 24 5421 All-in-One...
  • Page 16 Isosceles stand Views of Inspiron 24 5421 All-in-One...

  • Page 17: Inside View Of Your Computer

    14. Coin-cell battery 15. Memory module Retractable camera Push the top of camera to extend or retract the camera. Extend the camera before use and retract the camera to protect your privacy when not in use. Views of Inspiron 24 5421 All-in-One...
  • Page 18 Views of Inspiron 24 5421 All-in-One...

  • Page 19: Chapter 2: Set Up Your Computer

    1. Set up the stand by inserting it into the slot on the back cover until it snaps into place. 2. Connect the keyboard and mouse. NOTE: To connect your wireless keyboard and mouse, find User Guides and other resources for your products at https://www.dell.com/support Set up your computer...
  • Page 20 3. Connect to your network using a cable. Set up your computer...
  • Page 21 NOTE: Alternatively, you can connect to a wireless network. 4. Connect the power cable. Set up your computer...
  • Page 22 5. Press the power button. Set up your computer...
  • Page 23 6. Finish Windows setup. Follow the on-screen instructions to complete the setup. When setting up, Dell recommends that you: ● Connect to a network for Windows updates. NOTE: If connecting to a secured wireless network, enter the password for the wireless network access when prompted.
  • Page 24 Dell Update, search in the Knowledge Base Resource at www.dell.com/ support. Dell Digital Delivery Download software applications, which are purchased but not preinstalled on your computer. For more information on using Dell Digital Delivery, search in the Knowledge Base Resource at www.dell.com/support. Set up your computer...

  • Page 25: Chapter 3: Specifications Of Inspiron 24 5421 All-In-One

    Specifications of Inspiron 24 5421 All-in-One Dimensions and weight The following table lists the height, width, depth, and weight of your Inspiron 24 5421 All-in-One. Table 2. Computer dimensions and weight (without stand) Description Values Height Front 353.82 mm (13.92 in.)
  • Page 26 199.55 mm (7.86 in.) 390.71 mm (15.38 in.) 228.19 mm (8.98 in.) 440.30 mm (17.34 in.) 539.11 mm (21.22 in.) Isosceles stand The following table provides the dimensions of the computer with Isosceles stand installed. Specifications of Inspiron 24 5421 All-in-One...

  • Page 27: Processor

    390.71 mm (15.38 in.) 228.87 mm (9.01 in.) 440.30 mm (17.34 in.) 531.50 mm (20.92 in.) Processor The following table lists the details of the processors supported by your Inspiron 24 5421 All-in-One. Table 6. Processor Description Option one Option two...

  • Page 28: Chipset

    Dual processors with Dual Channel Memory Channel Memory Support) Support) Chipset The following table lists the details of the chipset supported by your Inspiron 24 5421 All-in-One. Table 7. Chipset Description Values Chipset Integrated in the processor Processor ●...

  • Page 29: External Ports

    ● 32 GB, 1 x 32 GB, DDR4, 3200 MHz ● 32 GB, 2 x 16 GB, DDR4, 3200 MHz, dual-channel External ports The following table lists the external ports of your Inspiron 24 5421 All-in-One. Table 9. External ports Description...

  • Page 30: Ethernet

    Ethernet The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Inspiron 24 5421 All-in-One. Table 11. Ethernet specifications Description Values Model number Intel AX211 PCI-e Gigabit ethernet controller/Killer 1690i PCI-e Gigabit ethernet controller Transfer rate...

  • Page 31: Storage

    M.2 2230, solid-state drive PCIe NVMe Gen4 x4, up to 64 Gbps Up to 1 TB Media-card reader The following table lists the media cards supported by your Inspiron 24 5421 All-in-One. Table 16. Media-card reader specifications Description Values Media-card type One SD-card 3.0 slot...

  • Page 32: Camera

    82 degrees 82 degrees Infrared camera Not supported 77.30 degrees Power adapter The following table lists the power adapter specifications of your Inspiron 24 5421 All-in-One. Table 18. Power adapter specifications Description Option one Option two Type 90 W AC...

  • Page 33: Display

    Operating and storage temperature ranges may differ among components, so operating or storing the device outside these ranges may impact the performance of specific components. Display The following table lists the display specifications of your Inspiron 24 5421 All-in-One. Table 19. Display specifications Description...

  • Page 34: Gpu-Integrated

    17.26 W 14.11 W Anti-glare vs glossy finish Anti-glare Anti-glare GPU—Integrated The following table lists the specifications of the integrated Graphics Processing Unit (GPU) supported by your Inspiron 24 5421 All-in-One. Table 20. GPU—Integrated Controller Memory size Processor Intel UHD Graphics (For computers Shares system memory ●...

  • Page 35: Regulatory Compliance

    Japan Energy Law South Korea E-standby EU RoHS China RoHS Operating and storage environment This table lists the operating and storage specifications of your Inspiron 24 5421 All-in-One. Airborne contaminant level: G1 as defined by ISA-S71.04-1985 Table 24. Computer environment Description Operating...

  • Page 36: Dell Support Policy

    Dell Support policy For information on Dell support policy, search in the Knowledge Base Resource at www.dell.com/support. Specifications of Inspiron 24 5421 All-in-One...

  • Page 37: Chapter 4: 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 38: 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 39: Esd Field Service Kit

    Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag. ● 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. Working inside your computer...

  • Page 40: Transporting Sensitive Components

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.

  • Page 41: Screw List

    ● Phillips screwdriver #0 ● Phillips screwdriver #1 ● Plastic scribe Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.

  • Page 42: Major Components Of Inspiron 24 5421 All-In-One

    Table 25. Screw list (continued) Component Screw type Quantity Screw image Display panel M3x5 Display panel M3x3 Major components of Inspiron 24 5421 All-in-One The following image shows the major components of Inspiron 24 5421 All-in-One. Working inside your computer...
  • Page 43 1. Back cover 2. Isosceles stand 3. Antennas 4. Heat sink 5. Microphone module 6. Fan 7. System board 8. Speaker Working inside your computer...
  • Page 44 9. Middle frame 10. Base panel 11. Power-button board with USB and connector cable 12. Stand hinge 13. Media-card reader 14. Display panel 15. Hard-disk drive 16. Wireless card 17. M.2 2230 solid-state drive 18. M.2 2280 solid-state drive 19. System-board shield 20.

  • Page 45: Chapter 5: Removing And Installing Customer Replaceable Units (Crus)

    Removing and installing Customer Replaceable Units (CRUs) The replaceable components in this chapter are Customer Replaceable Units (CRUs). CAUTION: Customers can replace only the Customer Replaceable Units (CRUs) following the safety precautions and replacement procedures. NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Stand Removing the stand Prerequisites...

  • Page 46: Installing The Stand

    Steps 1. Locate the tab on the stand, and push a scribe into the tab to release the stand from the display-assembly base. 2. Lift the stand off the display-assembly base. Installing the stand Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: The following procedure is applicable for both Y stand and Isosceles stand.

  • Page 47: Back Cover

    Insert the stands into the slots on the back cover until they snap into place on the display-assembly base. Next steps Follow the procedure in After working inside your computer. Back cover Removing the back cover Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 48: Installing The Back Cover

    Steps 1. Place your palm in the middle of the back cover, and then pry the back cover from the display-assembly base starting from the top corners. 2. Remove the back cover from the display-assembly base. Installing the back cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 49: I/O Cover

    Steps Align the slots on the back cover with the slots on the computer, and press along the side to snap the back cover into place. Next steps 1. Follow the procedure in After working inside your computer. I/O cover Removing the I/O cover Prerequisites 1.

  • Page 50: Installing The I/O Cover

    Steps 1. Remove the five screws (M3x5) that secure the I/O cover to the display-assembly base. 2. Lift the I/O cover off the display-assembly base. Installing the I/O cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the I/O cover and provides a visual representation of the installation procedure.

  • Page 51: Stand Hinges

    Steps 1. Place the I/O cover on the display-assembly base. 2. Align the screw holes on the I/O cover with the screw holes on the display-assembly base. 3. Replace the two screws (M3x5) that secure the I/O cover to the display-assembly base and snap the I/O cover back into place.

  • Page 52: Installing The Stand Hinges

    Steps 1. Remove the 10 screws (M3x4.5) that secure the right and left stand hinges to the display-assembly base. 2. Lift the stand hinges off the display-assembly base. Installing the stand hinges Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: For replacement of stand or stand hinges, the replacement kit is shipped with both stand and stand hinges, and you must replace both of these components together.

  • Page 53: System-Board Shield

    Steps 1. Align the screw holes on the stand hinges with the screw holes on the display-assembly base. 2. Replace the 10 screws (M3x4.5) that secure the stand hinges to the display-assembly base. Next steps 1. Install the cover. 2. Install the back cover.

  • Page 54: Installing The System-Board Shield

    Steps 1. Remove the four screws (M3x5) that secure the system-board shield to the display-assembly base. 2. Lift the system-board shield off the display-assembly base. Installing the system-board shield Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the system-board shield and provides a visual representation of the installation procedure.

  • Page 55: Hard Drive

    Steps 1. Align the slots on the system-board shield with the ports on the computer. 2. Replace the four screws (M3x5) that secure the system-board shield to the display-assembly base. Next steps 1. Install the cover. 2. Install the back cover.

  • Page 56: Installing The Hard Drive

    Steps 1. Remove the screw (M3x5) that secures the hard-drive assembly to the display-assembly base. 2. Slide the hard-drive assembly away from the hard-drive slot on the display-assembly base. 3. Remove the four screws (M3x3.5) that secure the hard-drive bracket to the hard drive. 4.

  • Page 57: Solid-State Drive

    Steps 1. Align the screw holes on the hard drive with the screw holes on the hard-drive bracket. 2. Replace the four screws (M3x3.5) that secure the hard-drive bracket to the hard drive. 3. Slide the hard-drive assembly into the slot on the display-assembly base. 4.

  • Page 58: Installing The M.2 2230 Solid-State Drive

    The following image indicates the location of the solid-state drive and provides a visual representation of the removal procedure. Steps 1. Remove the screw (M2x3.5) that secures the solid-state drive to the system board. 2. Slide and remove the solid-state drive from the M.2 card slot on the system board. Installing the M.2 2230 solid-state drive Prerequisites CAUTION:...
  • Page 59 The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure. Steps 1. Ensure that the thermal pad covering the M.2 2230 slot on the system board is in place. 2. Align the notch on the solid-state drive with the tab on the M.2 card slot. 3.

  • Page 60: Removing The M.2 2280 Solid-State Drive

    Removing the M.2 2280 solid-state drive Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the stand. 3. Remove the back cover. 4. Remove the cover. 5. Remove the system-board shield. About this task NOTE: The M.2 card installed on your computer will depend on the configuration ordered. The supported card configurations on the M.2 card slot are: ●...
  • Page 61 About this task NOTE: The M.2 card installed on your computer will depend on the configuration ordered. The supported card configurations on the M.2 card slot are: ● M.2 2230 solid-state drive ● M.2 2280 solid-state drive NOTE: This procedure applies if you are installing an M.2 2280 solid-state drive. If you are replacing an M.2 2230 solid-state drive with an M.2 2280 solid-state drive, move the screw mount as shown in the following figure, before you perform the other steps in the installation procedure.

  • Page 62: Memory Module

    Next steps 1. Install the system-board shield. 2. Install the cover. 3. Install the back cover. 4. Install the stand. 5. Follow the procedure in After working inside your computer. Memory module Removing the memory module Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 63: Installing The Memory Module

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

  • Page 64: Wireless Card

    Wireless card Removing the wireless card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the stand. 3. Remove the back cover. 4. Remove the cover. 5. Remove the system-board shield. About this task The following image indicates the location of the wireless card and provides a visual representation of the removal procedure. Steps 1.

  • Page 65: Installing The Wireless Card

    Installing the wireless card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. CAUTION: To avoid damage to the wireless card, do not place any cables under it. About this task The following image indicates the location of the wireless card and provides a visual representation of the installation procedure. Steps 1.

  • Page 66: Retractable-Camera Assembly

    Next steps 1. Install the system-board shield. 2. Install the cover. 3. Install the back cover. 4. Install the stand. 5. Follow the procedure in After working inside your computer. Retractable-camera assembly Removing the retractable-camera assembly Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 67: Installing The Retractable-Camera Assembly

    Installing the retractable-camera assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the retractable-camera assembly and provides a visual representation of the installation procedure.

  • Page 68: Installing The Fan

    3. Remove the back cover. 4. Remove the cover. 5. Remove the system-board shield. About this task The following image indicates the location of the fan and provides a visual representation of the removal procedure. Steps 1. Disconnect the fan cable from the system board. 2.

  • Page 69: Speakers

    Steps 1. Align the screw holes on the fan with the screw holes on the display-assembly base. 2. Replace the three screws (M2x3.5) that secure the fan to the display-assembly base. 3. Route the fan cable through the routing guides on the display-assembly base. 4.

  • Page 70: Installing The Speakers

    Steps 1. Disconnect the speaker cable from the system board. 2. Remove the speaker cable from the routing guides on the display-assembly base. 3. Lift the speakers along with the cable off the display-assembly base. Installing the speakers Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the speakers and provides a visual representation of the installation procedure.

  • Page 71: Coin-Cell Battery

    Steps 1. Using the alignment posts and rubber grommets, place the speakers on the slots on the display-assembly base. 2. Route the speaker cable through the routing guide on display-assembly base. 3. Connect the speaker cable to the system board. Next steps 1.

  • Page 72: Installing The Coin-Cell Battery

    Steps 1. Press the metal tab to release the coin-cell battery from the coin-cell battery socket. 2. Lift the coin-cell battery from the coin-cell battery socket. Installing the coin-cell battery Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure.
  • Page 73 Steps With the positive-side facing up, insert the coin-cell battery into the battery socket on the system board and snap the battery into place. Next steps 1. Install the system-board shield. 2. Install the cover. 3. Install the back cover. 4.

  • Page 74: Chapter 6: Removing And Installing Field Replaceable Units (Frus)

    To avoid any potential damage to the component or loss of data, ensure that an authorized service technician replaces the Field Replaceable Units (FRUs). CAUTION: Dell Technologies recommends that this set of repairs, if needed, to be conducted by trained technical repair specialists. CAUTION: As a reminder, your warranty does not cover damages that may occur during the courses of FRU repairs that are not authorized by Dell Technologies.

  • Page 75: Installing The Heat Sink

    Steps 1. In reverse sequential order (5>4>3>2>1), loosen the five captive screws that secure the heat sink to the system board and the display-assembly base. 2. Lift the heat sink off the system board and display-assembly base. Installing the heat sink CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 76: Heat Sink (Discrete Graphics)

    Steps 1. Align the screw holes on the heat sink with the screw holes on the system board and the display-assembly base. 2. In sequential order (1>2>3>4>5), tighten the five captive screws that secure the heat sink to the system board and display-assembly base.

  • Page 77: Installing The Heat Sink

    Steps 1. In reverse sequential order (7>6>5>4>3>2>1), loosen the seven captive screws that secure the heat sink to the system board and the display-assembly base. 2. Lift the heat sink off the system board and display-assembly base. Installing the heat sink CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 78: Media-Card Reader

    Steps 1. Align the screw holes on the heat sink with the screw holes on the system board and the display-assembly base. 2. In sequential order (1>2>3>4>5>6>7), tighten the seven captive screws that secure the heat sink to the system board and display-assembly base.

  • Page 79: Installing The Media-Card Reader

    About this task The following image indicates the location of the media-card reader and provides a visual representation of the removal procedure. Steps 1. Remove the screw (M3x3.5) that secures the media-card reader to the display-assembly base. 2. Open the latch and disconnect the media-card reader cable from the system board. 3.

  • Page 80: Power-Button Board With Usb

    Steps 1. Slide the media-card reader under the system board and align the screw hole on the media-card reader with the screw hole on the display-assembly base. NOTE: Ensure that the media-card reader cable stays above the system board. 2. Connect the media-card reader cable to the system board and close the latch to secure the cable. 3.

  • Page 81: Installing The Power-Button Board With Usb

    About this task The following image indicates the location of the power-button board with USB and provides a visual representation of the removal procedure. Steps 1. Remove the five screws (M3x4.5) that secure the left stand hinge to the display-assembly base. 2.
  • Page 82 About this task The following image indicates the location of the power-button board with USB and provides a visual representation of the installation procedure. Steps 1. Connect the power-button board cable to the power-button board and close the latch to secure the cable. 2.

  • Page 83: System Board

    System board Removing the system board CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 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 84 Figure 1. System-board connectors 1. Fan-cable connector 2. Coin-cell battery 3. Memory-module slots 4. Speaker-cable connector 5. Microphone-module cable connector 6. Media-card reader cable connector 7. Wireless-card slot 8. Power-button board cable connector 9. Display-cable connector 10. Backlight-cable connector 11. Camera-cable connector 12.
  • Page 85 Removing and installing Field Replaceable Units (FRUs)

  • Page 86: Installing The System Board

    Steps 1. Disconnect the touchscreen cable from the system board. NOTE: This cable is only available on computers that support touch option. 2. Disconnect the camera cable from the system board. 3. Disconnect the backlight cable from the system board. 4.
  • Page 87 Figure 2. System-board connectors 1. Fan-cable connector 2. Coin-cell battery 3. Memory-module slots 4. Speaker-cable connector 5. Microphone-module cable connector 6. Media-card reader cable connector 7. Wireless-card slot 8. Power-button board cable connector 9. Display-cable connector 10. Backlight-cable connector 11. Camera-cable connector 12.
  • Page 88 Removing and installing Field Replaceable Units (FRUs)

  • Page 89: Microphones

    Steps 1. Place the system board on the display-assembly base. 2. Align the screw holes on the system board with the screw holes on the display-assembly base. 3. Replace the six screws (M3x5) that secure the system board to the display-assembly base. 4.

  • Page 90: Installing The Microphones

    12. Remove the system board. About this task The following image indicates the location of the microphones and provides a visual representation of the removal procedure. Steps 1. Remove the four screws (M2X3.5) that secure the microphone module to the display-assembly base. 2.
  • Page 91 Steps 1. Align and place the microphone module into the slot on the display-assembly base. 2. Replace the four screws (M2X3.5) that secure the microphone module to the display-assembly base. 3. Route the microphone cable through the routing guides on the display-assembly base. 4.

  • Page 92: Antennas

    Antennas Removing the antennas CAUTION: The information in this intended for authorized service technicians only. Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the stand. 3. Remove the back cover. 4. Remove the cover. 5. Remove the hard drive.

  • Page 93: Installing The Antennas

    2. Carefully peel the copper foil that secures the antenna cables on both sides of the display-assembly base. 3. Lift the antenna modules off the base panel. Installing the antennas CAUTION: The information in this intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 94: Display Panel

    11. Install the hard drive. 12. Install the cover. 13. Install the back cover. 14. Install the stand. 15. Follow the procedure in After working inside your computer. Display panel Removing the display panel CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites 1.
  • Page 95 Steps 1. Remove the 10 screws (M3x5) that secure the display panel to the display-assembly base. Removing and installing Field Replaceable Units (FRUs)

  • Page 96: Installing The Display Panel

    2. Remove the five screws (M3x3) that secure the display panel to the display-assembly base. 3. Place the computer in an upright position. 4. Holding the top corner, push the display panel away from the display-assembly base using the push holes available on the display-assembly base.

  • Page 97: Middle Frame Assembly

    Steps 1. Slide and insert the display panel into the slot on the display-assembly base. 2. Route the display-backlight cable, touchscreen cable, and display cable on the display panel through the slots on the display-assembly base. 3. Place the display-assembly base on a clean and flat surface with the display panel facing down. 4.
  • Page 98 Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the stand. 3. Remove the back cover. 4. Remove the cover. 5. Remove the hard drive. 6. Remove the system-board shield. 7. Remove the media-card reader. 8. Remove the fan. 9.

  • Page 99: Installing The Mid-Frame Assembly With Antennas

    Installing the mid-frame assembly with antennas CAUTION: The information in this intended for authorized service technicians only. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the base panel and provides a visual representation of the installation procedure. Steps Place the mid-frame assembly with antenna on a flat and clean surface and perform the steps in the Post-requisites...
  • Page 100 11. Install the retractable-camera assembly. 12. Install the fan. 13. Install the media-card reader. 14. Install the system-board shield. 15. Install the hard drive. 16. Install the cover. 17. Install the back cover. 18. Install the stand. 19. Follow the procedure in After working inside your computer.

  • Page 101: Chapter 7: Software

    Your Inspiron 24 5421 All-in-One supports the following operating systems: ● Windows 11 Pro ● Windows 11 Home Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ 000123347. Software...

  • Page 102: Chapter 8: Bios Setup

    About this task Turn on (or restart) your computer and press F2 immediately. NOTE: If you are connected to the Dell Pro Wireless Keyboard KM5221W, press Fn+F2. Navigation keys NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart the system.

  • Page 103: System Setup Options

    NOTE: If you are connected to the Dell Pro Wireless Keyboard KM5221W, press Fn+F12. NOTE: It is recommended to shutdown the computer if it is on. The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are: ●...
  • Page 104 Table 28. System setup options—System information menu (continued) Overview Memory Technology Displays the technology that is used for the memory. DIMM 1 Size Displays the DIMM type and memory capacity or if the memory slot is empty. DIMM 2 Size Displays the DIMM type and memory capacity or if the memory slot is empty.
  • Page 105 Table 30. System setup options—Integrated Devices menu (continued) Integrated Devices Audio Enable Audio Enable or disable the integrated audio controller. By default, all the options are enabled. USB Configuration ● Enable or disable booting from USB mass storage devices that are connected to external USB ports.
  • Page 106 Table 33. System setup options—Connection menu (continued) Connection WLAN Enable or disable the internal WLAN device. By default, the option enabled. Bluetooth Enable or disable the internal Bluetooth device By default, the option enabled. Enable UEFI Network Stack Enable or disable UEFI Network Stack and controls the on-board LAN Controller.
  • Page 107 Table 35. System setup options—Security menu (continued) Security Default: ON PPI Bypass for Clear Commands Enables or disables the Trusted Platform Model (TPM) Physical Presence Interface (PPI). When enabled, the OS will skip BIOS Physical Presence Interface (PPI) user prompts when issuing the Clear command. Default: OFF Clear Enables or disables the computer to clear the PTT owner information, and...
  • Page 108 Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the option is disabled. Table 37. System setup options—Update, Recovery menu...
  • Page 109 Displays the options for Wake on LAN/WAN. By default, the Disabled option is selected. Diagnostics OS Agent Request Enable or disable Dell OS agents to schedule onboard diagnostics. By default, the option is enabled. Power-on-Self-Test Automatic Enable or disable the BIOS to automatically recover the system.
  • Page 110 Table 40. System setup options—Pre-boot Behavior menu Pre-boot Behavior Adapter Warnings Enable Adapter Warnings Enable or disable the warning messages during boot when the adapters with less power capacity are detected. By default, the option is enabled. Warning and Errors Enable or disable the action to be done when a warning or error is encountered.

  • Page 111: Updating The Bios

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

  • Page 112: 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 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 113: System And Setup Password

    To enter the system setup, press F12 immediately after a power-on or reboot. NOTE: If you are connected to the Dell Pro Wireless Keyboard KM5221W, press Fn+F12. Steps 1. In the System BIOS or System Setup screen, select Security and press Enter.

  • Page 114: Clearing Cmos Settings

    Clearing BIOS (System Setup) and System passwords About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.

  • Page 115: Chapter 9: Troubleshooting

    Check diagnostics About this task SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell SupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to: ●...
  • Page 116 (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 117: Recovering The Operating System

    It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures.

  • Page 118: Wifi Power Cycle

    WiFi power cycle About this task If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed. The following procedure provides the instructions on how to conduct a WiFi power cycle: NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.

  • Page 119: Chapter 10: 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 46. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app...

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