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Dell 24 All-in-One Owner's Manual

Dell 24 All-in-One Owner's Manual

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Dell 24 All-in-One
EC24250
Owner's Manual
Regulatory Model: W29C
Regulatory Type: W29C001
December 2024
Rev. A00

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Summary of Contents for Dell 24 All-in-One

  • Page 1 Dell 24 All-in-One EC24250 Owner's Manual Regulatory Model: W29C Regulatory Type: W29C001 December 2024 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2024 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

    Contents Chapter 1: Views of Dell 24 All-in-One EC24250................7 Right......................................7 Front....................................... 8 Back......................................9 Back panel....................................10 Bottom....................................11 Service Tag..................................12 Tilt......................................13 Retractable camera................................14 Inside view of your computer............................16 Chapter 2: Set up your computer....................17 Chapter 3: Specifications of Dell 24 All-in-One EC24250............. 23 Dimensions and weight..............................
  • Page 4 After working inside your computer........................38 After working inside your computer........................38 BitLocker..................................... 38 Recommended tools................................. 38 Screw list.....................................39 Major components of Dell 24 All-in-One EC24250....................40 Chapter 5: Removing and installing Customer Replaceable Units (CRUs)........42 Stand....................................42 Removing the stand..............................42 Installing the stand..............................43 Back cover..................................
  • Page 5 Assigning a system setup password........................108 Deleting or changing an existing system setup password................108 Clearing CMOS settings..............................109 Clearing system and setup passwords........................109 Chapter 9: Troubleshooting......................110 Dell SupportAssist Pre-boot System Performance Check diagnostics...............110 Running the SupportAssist Pre-Boot System Performance Check............... 110 Contents...
  • Page 6 System-diagnostic lights..............................110 Recovering the operating system..........................112 Real-Time Clock (RTC Reset)............................112 Backup media and recovery options..........................112 Network power cycle...............................113 Chapter 10: Getting help and contacting Dell................114 Contents...

  • Page 7: Chapter 1: Views Of Dell 24 All-In-One Ec24250

    Views of Dell 24 All-in-One EC24250 Right Figure 1. Right view 1. USB 3.2 Gen 2 Type-C (10 Gbps) port Connect devices such as external storage devices and printers. Provides data transfer speeds up to 10 Gbps. NOTE: Connected USB devices will not charge when the computer is turned off or in sleep state. Turn on the computer to charge the connected USB devices.

  • Page 8: 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 Dell 24 All-in-One EC24250...

  • Page 9: Back

    Figure 3. Back view 1. Back cover Removable chassis that covers the internal components of your computer. 2. Back panel Connect USB, audio, video, and other devices. 3. Stand Allows the system to be mounted vertically. Views of Dell 24 All-in-One EC24250...

  • Page 10: Back Panel

    NOTE: Set the BIOS Deep Sleep control to disabled to enable Wake up when the computer is powered off. 8. Universal headset jack Views of Dell 24 All-in-One EC24250...

  • Page 11: Bottom

    Press and hold down this button, and then press the power button to turn on the computer. The built-in color pattern for the LCD monitor will appear on the screen. For more information, see Troubleshooting. 3. Service Tag label Views of Dell 24 All-in-One EC24250...

  • Page 12: Service Tag

    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. Figure 6. Service Tag location...

  • Page 13: Tilt

    Tilt Y stand Views of Dell 24 All-in-One EC24250...

  • Page 14: Retractable Camera

    Isosceles stand 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 Dell 24 All-in-One EC24250...
  • Page 15 Figure 7. Retractable camera Views of Dell 24 All-in-One EC24250...

  • Page 16: Inside View Of Your Computer

    4. Coin-cell battery 5. Heat sink 6. Fan 7. Memory modules 8. Speaker 9. Media-card reader 10. System board 11. Microphone module 12. Wireless-card slot 13. Speaker 14. Power-button board with Type-C 15. Display-assembly base Views of Dell 24 All-in-One EC24250...

  • Page 17: 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. Figure 9. Install the stand 2. Connect the keyboard and mouse. NOTE: To connect your wireless keyboard and mouse, find User Guides and other resources for your products at Dell Support Site. Set up your computer...
  • Page 18 Figure 10. Connect the keyboard and mouse 3. Connect to your network using a cable. Set up your computer...
  • Page 19 Figure 11. Connect to a network NOTE: Alternatively, you can connect to a wireless network. 4. Connect the power adapter. Set up your computer...
  • Page 20 Figure 12. Connect the power adapter . 5. Press the power button. Set up your computer...
  • Page 21 Figure 13. Press the power button 6. Finish the Windows setup. Follow the on-screen instructions to complete the setup. When setting up, Dell Technologies 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 22 Resources Description Dell Update Updates your computer with critical fixes and latest device drivers as they become available. For more information about using Dell Update, see the product guides and third-party license documents at Dell Support Site. Set up your computer...

  • Page 23: Chapter 3: Specifications Of Dell 24 All-In-One Ec24250

    Specifications of Dell 24 All-in-One EC24250 Dimensions and weight The following table lists the height, width, depth, and weight of your Dell 24 All-in-One EC24250. Table 2. Computer dimensions and weight (without stand)  Description Values Height Front 353.82 mm (13.92 in.)

  • Page 24: Chipset

    Intel Iris X Intel Iris X graphics Graphics 80EU Graphics 96EU Chipset The following table lists the details of the chipset that is supported in your Dell 24 All-in-One EC24250. Table 4. Chipset  Description Option one Option two Processors ● Intel Core 3 100U ●...

  • Page 25: Operating System

    Your Dell 24 All-in-One EC24250 supports the following operating systems: ● Windows 11 Home ● Windows 11 Pro Memory The following table lists the memory specifications that are supported by your Dell 24 All-in-One EC24250. Table 5. Memory specifications  Description Values...

  • Page 26: External Ports And Slots

    M.2 cards, search in the Knowledge Base Resource at Dell Support Site. Ethernet The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Dell 24 All-in-One EC24250. Table 9. Ethernet specifications  Description Values Model...

  • Page 27: Wireless Module

    Wireless module The following table lists the Wireless Local Area Network (WLAN) module that is supported on your Dell 24 All-in-One EC24250. Table 10. Wireless module specifications  Description Values Model number Intel AX211 Transfer rate Up to 2400 Mbps Frequency bands supported 2.40 GHz/5 GHz/6 GHz...

  • Page 28: Storage

    Storage This section lists the storage options on your Dell 24 All-in-One EC24250. Your Dell 24 All-in-One EC24250 supports the M.2 2230 solid-state drive as the primary storage device. Table 12. Storage specifications  Storage type Interface type Capacity M.2 2230 solid-state drive Gen4 NVMe PCIe x4 ●...

  • Page 29: Power Adapter

    Camera 82 degrees 91.20 degrees Infrared camera Not supported 77.90 degrees Power adapter The following table lists the power adapter specifications of your Dell 24 All-in-One EC24250. Table 15. Power-adapter specifications  Description Option one Option two Type 90W AC 130W AC...

  • Page 30: Gpu-Integrated

    Power consumption (maximum) 17.26W 15.18 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 Dell 24 All-in-One EC24250. Table 17. GPU—Integrated  Controller Memory size Processor Intel Graphics Shared system memory ●...

  • Page 31: Multiple Display Support Matrix

    On board integrated HDMI 1.4 (1920x1080 @ (1920x1080 @ 60 Hz) 60 Hz) GPU—Discrete The following table lists the specifications of the discrete Graphics Processing Unit (GPU) supported by your Dell 24 All-in-One EC24250. Table 19. GPU—Discrete  Controller Memory size...

  • Page 32: Regulatory Compliance

    Japan Energy Law South Korea E-standby EU RoHS China RoHS Stand The following table provides the height, width, depth, and weight of the stand supported by your Dell 24 All-in-One EC24250 Table 23. Stand  Description Y stand Isosceles stand Height 96.62 mm (3.81 in.)
  • Page 33 The following table provides the dimensions of the computer with Isosceles stand installed. Table 25. Isosceles stand  Description Dimensions 414.30 mm (16.31 in.) 200.70 mm (7.90 in.) 390.71 mm (15.38 in.) 228.87 mm (9.01 in.) 440.30 mm (17.34 in.) 531.50 mm (20.92 in.) Specifications of Dell 24 All-in-One EC24250...

  • Page 34: Operating And Storage Environment

    Operating and storage environment This table lists the operating and storage specifications of your Dell 24 All-in-One EC24250. Airborne contaminant level: G1 as defined by ISA-S71.04-1985 Table 26. Computer environment  Description Operating Storage Temperature range 0°C to 35°C (32°F to 95°F) -40°C to 65°C (-40°F to 149°F)

  • Page 35: Chapter 4: Working Inside Your Computer

    You should only perform troubleshooting and repairs as authorized or directed by the Dell technical support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that are shipped with the product or at Dell Regulatory Compliance Home Page.

  • Page 36: Safety Precautions

    Standby power Dell products with standby power must be unplugged before you open the back cover. Systems that are equipped with standby power are powered while turned off. The internal power enables the computer to be remotely turned on (Wake-on-LAN) and suspended into a sleep mode and has other advanced power management features.

  • Page 37: Esd Field Service Kit

    NOTE: It is recommended to always use the traditional wired ESD grounding wrist strap and protective anti-static mat when servicing Dell products. In addition, it is critical to keep sensitive parts separate from all insulator parts while servicing the computer.

  • Page 38: 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. After working inside your computer About this task CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.

  • Page 39: Screw List

    ● Plastic scribe Screw list NOTE: When removing screws from a component, it is recommended to note the screw type and 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 40: Major Components Of Dell 24 All-In-One Ec24250

    Major components of Dell 24 All-in-One EC24250 The following image shows the major components of Dell 24 All-in-One EC24250. Figure 16. Major components of your computer Working inside your computer...
  • Page 41 1. Back cover 2. I/O cover 3. Isosceles stand 4. Wireless antenna 5. Heat sink 6. Microphone module 7. Fan 8. System board 9. Speakers 10. Middle frame 11. Base panel 12. Power-button board with USB 13. Hinges 14. Media-card reader 15.

  • Page 42: 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 43: Installing The Stand

    Figure 18. Removing 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.

  • Page 44: Back Cover

    Figure 19. Installing the stand 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.

  • Page 45: Installing The Back Cover

    About this task The following image indicates the location of the back cover and provides a visual representation of the removal procedure. Figure 21. Removing 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.

  • Page 46: I/O Cover

    Figure 22. Installing the back 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.

  • Page 47: Installing The I/O Cover

    Figure 23. Removing I/O cover Steps 1. Remove the five screws (M3x5) that secure the I/O cover to the display-assembly base. 2. Using a pry tool, pry open the corners of the I/O cover. 3. 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.

  • Page 48: 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 49: Installing The Stand Hinges

    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. Both components are replaced together.

  • Page 50: System-Board Shield

    System-board shield Removing the system-board shield Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the stand. 3. Remove the back cover. 4. Remove the cover. NOTE: The etchings on the system-board shield do not represent the components that are supported by this computer. About this task The following image indicates the location of the system-board shield and provides a visual representation of the removal procedure.

  • Page 51: Solid State Drive (Ssd)

    NOTE: The etchings on the system-board shield do not represent the components that are supported by this computer. About this task The following image indicates the location of the system-board shield and provides a visual representation of the installation procedure. Figure 28.

  • Page 52: Installing The M.2 2230 Solid-State Drive

    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 solid-state drive and provides a visual representation of the removal procedure. Figure 29.

  • Page 53: Memory Module

    Figure 30. Installing the M.2 2230 solid-state drive 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 54: Installing The Memory Module

    About this task The following image indicates the location of the memory module and provides a visual representation of the removal procedure. Figure 31. Removing the memory module Steps 1. Carefully spread apart the securing-clips on each end of the memory-module slot until the memory module is released. 2.

  • Page 55: Wireless Card

    Figure 32. Installing the memory module Steps 1. Align the notch on the memory module with the tab on the memory-module slot. 2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place. NOTE: If you do not hear the click, remove the memory module and reinstall it.

  • Page 56: Installing The Wireless Card

    Figure 33. Removing the wireless card Steps 1. Remove the screw (M2x3.5) that secures the wireless-card bracket to the wireless card. 2. Slide and lift the wireless-card bracket off the wireless card. 3. Disconnect the antenna cables from the wireless card. 4.
  • Page 57 Figure 34. Installing the wireless card Steps 1. Connect the antenna cables to the wireless card. The following table provides the antenna-cable color scheme for the wireless card that is supported by your computer. Table 28. Antenna-cable color scheme  Connectors on the wireless card Antenna-cable color Main (white triangle) White...

  • Page 58: Retractable-Camera Assembly

    Retractable-camera assembly Removing the retractable-camera assembly 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 retractable-camera assembly and provides a visual representation of the removal procedure.

  • Page 59: Fan

    About this task The following image indicates the location of the retractable-camera assembly and provides a visual representation of the installation procedure. Figure 36. Installing the camera Steps 1. Slide and place the retractable-camera assembly on the display-assembly base. 2. Replace the two screws (M3x5) that secure the retractable-camera assembly to the display-assembly base. 3.

  • Page 60: Installing The Fan

    About this task The following image indicates the location of the fan and provides a visual representation of the removal procedure. Figure 37. Removing the fan Steps 1. Disconnect the fan cable from its connector (FAN1) on the system board. 2.

  • Page 61: Speakers

    Figure 38. Installing the fan 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 post on the display-assembly base. 4.

  • Page 62: Installing The Speakers

    Figure 39. Removing the speakers Steps 1. Disconnect the speaker cable from its connector (SPK1) 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.

  • Page 63: Coin-Cell Battery

    Figure 40. Installing the speakers 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 the display-assembly base. 3. Connect the speaker cable to its connector (SPK1) on the system board. Next steps 1.

  • Page 64: Installing The Coin-Cell Battery

    Figure 41. Removing 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 65 Figure 42. Installing the coin-cell battery 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.

  • Page 66: 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 FRU repairs that are not authorized by Dell Technologies.

  • Page 67: Installing The Heat Sink- Uma

    Figure 43. Removing the heat sink- UMA 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. 2. Lift the heat sink off the system board. Installing the heat sink- UMA CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 68: Removing The Heat Sink- Discrete

    Figure 44. Installing the heat sink- UMA Steps 1. Align the screw holes on the heat sink with the screw holes on the system board. 2. In sequential order (1>2>3>4>5), tighten the five captive screws that secure the heat sink to the system board. Next steps 1.

  • Page 69: Installing The Heat Sink- Discrete

    Figure 45. Removing the heat sink- discrete 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. 2. Lift the heat sink off the system board. Installing the heat sink- discrete CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 70: Media-Card Reader

    Figure 46. Installing the heat sink- discrete Steps 1. Align the screw holes on the heat sink with the screw holes on the system board. 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. Next steps 1.

  • Page 71: 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. Figure 47. Removing the media-card reader Steps 1. Remove the screw (M3x3.5) that secures the media-card reader to the display-assembly base. 2.

  • Page 72: Power-Button Board With Usb

    Figure 48. Installing the media-card reader 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.

  • Page 73: 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. Figure 49. Removing the power-button board with USB Steps 1. Remove the five screws (M3x4.5) that secure the left-stand hinge to the display-assembly base. 2.
  • Page 74 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 power-button board with USB and provides a visual representation of the installation procedure. Figure 50.

  • Page 75: System Board

    2. Install the cover. 3. Install the back cover. 4. Install the stand. 5. Follow the procedure in After working inside your computer. System board Removing the system board CAUTION: The information in this section is intended for authorized service technicians only. Prerequisites NOTE: Your computer’s Service Tag is stored in the system board.
  • Page 76 Figure 51. System-board connectors 1. Solid-state drive slot (M.2 PCIe SSD) 2. Touchscreen-cable connector (optional) (TOUCH) 3. Camera-cable connector (WEBCAM) 4. Backlight-cable connector (BL) 5. Fan cable connector (FAN1) 6. Coin-cell battery (RTC) 7. Memory-module slots (DIMM2, DIMM1) 8. Speaker-cable connector (SPK1) 9.
  • Page 77 Figure 52. Removing the system board Removing and installing Field Replaceable Units (FRUs)

  • Page 78: Installing The System Board

    Figure 53. Lifting the system board off the chassis Steps 1. Disconnect the touchscreen cable from its connector (TOUCH) on the system board. NOTE: This cable is only available on computers that support the touch option. 2. Disconnect the camera cable from its connector (WEBCAM) on the system board. 3.
  • Page 79 Figure 54. System-board connectors 1. Solid-state drive slot (M.2 PCIe SSD) 2. Touchscreen-cable connector (optional) (TOUCH) 3. Camera-cable connector (WEBCAM) 4. Backlight-cable connector (BL) 5. Fan cable connector (FAN1) 6. Coin-cell battery (RTC) 7. Memory-module slots (DIMM2, DIMM1) 8. Speaker-cable connector (SPK1) 9.
  • Page 80 Figure 55. Placing the system board in the chassis Removing and installing Field Replaceable Units (FRUs)
  • Page 81 Figure 56. Installing the system board 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 82: Microphone Module

    8. Install the stand. 9. Follow the procedure in After 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. NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup program.

  • Page 83: Installing The Microphone Module

    Figure 57. Removing the microphones Steps 1. Remove the four screws (M2X3.5) that secure the microphone module to the display-assembly base. 2. Peel the tape that secures the microphone-module cable to the display-assembly base. 3. Remove the microphone-module cable from the routing guides on the display-assembly base. 4.
  • Page 84 Figure 58. Installing the microphone module 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-module cable through the routing guides on the display-assembly base. 4.

  • Page 85: Antennas

    Antennas Removing the antennas CAUTION: The information in this section is 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.

  • Page 86: Installing The Antennas

    3. Lift the antenna module off the display-assembly base. Installing the antennas CAUTION: The information in this section is 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 antennas and provides a visual representation of the installation procedure.

  • Page 87: Display Panel

    10. Install the cover. 11. Install the back cover. 12. Install the stand. 13. 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 88 Figure 61. Removing the screws Figure 62. Removing the display panel Removing and installing Field Replaceable Units (FRUs)

  • Page 89: Installing The Display Panel

    Steps 1. Remove the 10 screws (M3x5) that secure the display panel to the display-assembly base. 2. Remove the five screws (M3x5.3) 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 90 Figure 64. Replacing the screws 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.

  • Page 91: Middle Frame Assembly

    Middle frame assembly Removing the middle-frame assembly CAUTION: The information in this section is 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.

  • Page 92: Installing The Middle-Frame Assembly

    Figure 65. Removing the middle-frame assembly Steps After performing the pre-requisites, you are left with the middle-frame assembly. NOTE: The middle-frame assembly consists of the following: ● Middle frame ● Base panel ● Wireless antennas (2) Installing the middle-frame assembly CAUTION: The information in this section is intended for authorized service technicians only.
  • Page 93 Figure 66. Installing the middle-frame assembly Steps Place the middle-frame assembly on a flat and clean surface and perform the steps in the post-requisites to install the middle-frame assembly. NOTE: The middle-frame assembly consists of the following: ● Middle frame ●...

  • Page 94: Chapter 7: Software

    Your Dell 24 All-in-One EC24250 supports the following operating systems: ● Windows 11 Home ● Windows 11 Pro Drivers and downloads When troubleshooting, downloading, or installing drivers, it is recommended that you read the Dell Knowledge Base article Drivers and Downloads FAQs 000123347. Software...

  • Page 95: 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 BIOS Setup options, changes that you make are recorded but do not take effect until you restart the computer.

  • Page 96: System Setup Options

    Depending on your computer and its installed devices, the items that are listed in this section may or may not be displayed. Table 30. System setup options—Overview menu  Overview Dell 24 All-in-One EC24250 BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer.
  • Page 97 The computer stops booting to the operating system when a component is not authenticated during the boot process. Secure Boot can be enabled in BIOS setup or using management interfaces like Dell Command|Configure, but can only be disabled from BIOS setup.
  • Page 98 Table 31. System setup options—Boot Configuration menu (continued) Boot Configuration By default, the Enable Custom Mode option is disabled. Custom Mode Key Management Selects the custom values for expert key management. By default, the PK option is selected. Table 32. System setup options—Integrated Devices menu  Integrated Devices Date/Time Date...
  • Page 99 Table 33. System setup options—Storage menu (continued) Storage Enable SMART reporting If S.M.A.R.T. (Self-monitoring, Analysis, and Reporting Technology) is enabled the BIOS can receive analytical information from integrated devices and send notifications during startup about possible failure of the device. By default, the option is disabled. Drive Information Displays the drive type and device name.
  • Page 100 Table 36. System setup options—Power menu (continued) Power By default, the option is disabled. USB Wake Support Enable USB Wake support Enable or disable USB devices like a mouse or keyboard to wake the system from Standby, Hibernate, and Power Off. By default, the USB Wake Support option is disabled.
  • Page 101 By default, the Start Data Wipe option is disabled. Absolute Absolute Software provides various cyber security solutions, some requiring software preloaded on Dell computers and integrated into the BIOS. To use these features, you must enable the Absolute BIOS setting and contact Absolute for configuration and activation.
  • Page 102 BIOS passwords. You can modify the minimum and maximum length of the passwords and require passwords to contain certain character classes (upper case, lower case, digit, special character). Dell Technologies recommends setting the minimum password length to at least eight characters. Password Bypass The Password Bypass option allows the computer to reboot from the operating system without entering the computer or hard drive password.
  • Page 103 When an internal hard drive password is set, it must first be cleared before Master Password Lockout can be changed. By default, the Enable Master Password Lockout option is disabled. Dell does not recommend enabling the Master Password Lockout unless you have implemented your own password recovery computer. Allow Non-Admin PSID Revert This option controls access to the Physical Security ID (PSID) revert of NVMe storage drives from the Dell Security Manager prompt.
  • Page 104 Allows you to control the automatic boot flow for SupportAssist System Resolution Console and for Dell operating system Recovery Tool. By default, the Dell Auto OS Recovery Threshold value is set to 2. Table 40. System setup options—System Management menu ...
  • Page 105 This option is not available when the virtualization setting for IOMMU is disabled (VT-d/AMD Vi). By default, the Enable Pre-Boot DMA Support option is enabled. For additional security, Dell Technologies recommends keeping the Enable Pre- Boot DMA Support option enabled. NOTE: This option is provided only for compatibility purposes, since some older hardware is not DMA capable.

  • Page 106: Updating The Bios

    4. Connect the bootable USB drive to the computer that needs the BIOS update. 5. Restart the computer and press F12 . NOTE: If you are connected to the Dell Pro Wireless Keyboard KM5221W, press Fn+F12. 6. Select the USB drive from the One Time Boot Menu. BIOS Setup...

  • Page 107: Updating The Bios From The One Time Boot Menu

    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 108: Assigning A System 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 109: Clearing Cmos Settings

    When you release the power button, the CMOS settings are cleared and the computer restarts. A dialog box is displayed, with options to run BIOS-Setup and Diagnostics. Clearing system and setup passwords About this task To clear the system or setup passwords, contact Dell technical support as described at Contact Support. NOTE: For information about how to reset Windows or application passwords, see the documentation accompanying Windows or your application.

  • Page 110: 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 within the BIOS and launched by the BIOS internally. The embedded system diagnostics provides options for particular devices or device groups allowing you to: ●...
  • Page 111 (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 112: Recovering The Operating System

    It enables you to diagnose hardware issues, repair your computer, back up your files, and 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 the primary operating system due to software or hardware failures.

  • Page 113: Network Power Cycle

    Network power cycle About this task If your computer is unable to access the Internet due to network connectivity issues, reset your network devices by performing the following steps: Steps 1. Turn off the computer. 2. Turn off the modem. NOTE: Some Internet service providers (ISPs) provide a modem and router combo device.

  • Page 114: 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 48. Self-help resources  Self-help resources Resource location Information about Dell products and services Dell Site Tips Contact Support In Windows search, type Contact Support, and press Enter.

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