Dell Inspiron 27 7720 All-in-One Owner's Manual
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Dell Inspiron 27 7720 All-in-One Owner's Manual

Dell Inspiron 27 7720 All-in-One Owner's Manual

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Inspiron 27 7720 All-in-One
Owner's Manual
Regulatory Model: W29C
Regulatory Type: W29C001
Novmeber 2023
Table of Contents
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Summary of Contents for Dell Inspiron 27 7720 All-in-One

  • Page 1 Inspiron 27 7720 All-in-One Owner's Manual Regulatory Model: W29C Regulatory Type: W29C001 Novmeber 2023...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2023-2024 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 Inspiron 27 7720 All-in-One................7 Right......................................7 Front....................................... 8 Back......................................9 Back panel....................................10 Bottom....................................11 Service Tag..................................12 Tilt......................................13 Inside view of your computer............................15 Retractable camera................................15 Chapter 2: Set up your computer....................17 Chapter 3: Specifications of Inspiron 27 7720 All-in-One............. 23 Dimensions and weight..............................
  • Page 4 After working inside your computer........................37 BitLocker..................................37 Recommended tools................................. 37 Screw list.....................................38 Major components of Inspiron 27 7720 All-in-One....................39 Chapter 5: Removing and installing Customer Replaceable Units (CRUs)........42 Stand....................................42 Removing the stand..............................42 Installing the stand..............................43 Back cover..................................44 Removing the back cover............................44...
  • Page 5 Chapter 6: Removing and installing Field Replaceable Units (FRUs)..........71 Heat sink....................................71 Removing the heat sink- UMA..........................71 Installing the heat sink- UMA............................72 Removing the heat sink- discrete..........................73 Installing the heat sink- discrete..........................74 Media-card reader................................75 Removing the media-card reader..........................75 Installing the media-card reader..........................
  • Page 6 Chapter 9: Troubleshooting......................112 Dell SupportAssist Pre-boot System Performance Check diagnostics...............112 Running the SupportAssist Pre-Boot System Performance Check............... 112 System-diagnostic lights..............................112 Recovering the operating system..........................114 Backup media and recovery options..........................114 Wi-Fi power cycle................................115 Chapter 10: Getting help and contacting Dell................116...

  • Page 7: Chapter 1: Views Of Inspiron 27 7720 All-In-One

    Views of Inspiron 27 7720 All-in-One Right Figure 1. Right view 1. USB 3.2 Gen 2 Type-C port Connect devices such as external storage devices and printers. Views of Inspiron 27 7720 All-in-One...

  • 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 Inspiron 27 7720 All-in-One...

  • 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 Inspiron 27 7720 All-in-One...

  • Page 10: Back Panel

    Connect peripherals such as external storage devices and printers. Provides data transfer speeds up to 5 Gbps. Wake the computer from standby with the keyboard or mouse connected to this port. NOTE: Set the BIOS Deep Sleep control to disabled to enable Wake up when the computer is powered off. Views of Inspiron 27 7720 All-in-One...

  • Page 11: Bottom

    Press the button to switch the display between the internal system display and HDMI input. ● When the computer is off (there is no power; neither is it in sleep state nor hibernate state), use this button to run the built-in self-test for the display. Views of Inspiron 27 7720 All-in-One...

  • 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 Inspiron 27 7720 All-in-One...
  • Page 14 Isosceles stand Views of Inspiron 27 7720 All-in-One...

  • Page 15: Inside View Of Your Computer

    14. Hard-disk drive 15. Display-assembly base 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 27 7720 All-in-One...
  • Page 16 Views of Inspiron 27 7720 All-in-One...

  • 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 8. Installing 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 https://www.dell.com/support Set up your computer...
  • Page 18 Figure 9. Connect the keyboard and mouse 3. Connect to your network using a cable. Set up your computer...
  • Page 19 Figure 10. Connect to a network NOTE: Alternatively, you can connect to a wireless network. 4. Connect the power cable. Set up your computer...
  • Page 20 Figure 11. Connect the power cable 5. Press the power button. Set up your computer...
  • Page 21 Figure 12. Press the power button 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 22 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 23: Chapter 3: Specifications Of Inspiron 27 7720 All-In-One

    The weight of your computer varies depending on the configuration ordered and the manufacturing variability. Stand The following table provides the height, width, depth, and weight of the stand supported by your Inspiron 27 7720 All-in-One. Table 3. Stand  Description Y stand...
  • Page 24 199.55 mm (7.85 in.) 427.50 mm (16.83 in.) 244.84 mm (9.63 in.) 480.40 mm (18.91 in.) 611.11 mm (24.05 in.) Isosceles stand The following table provides the dimensions of Isosceles stand dimensions along with the computer. Specifications of Inspiron 27 7720 All-in-One...

  • Page 25: Processor

    427.50 mm (16.83 in.) 244.84 mm (9.63 in.) 480.40 mm (18.91 in.) 603.70 mm (23.76 in.) Processor The following table lists the details of the processors supported by your Inspiron 27 7720 All-in-One. Table 6. Processor  Description Option one Option two...

  • Page 26: Chipset

    Dual Channel Memory Support) processors with Dual Channel Memory Support) Chipset The following table lists the details of the chipset that is supported for your Inspiron 27 7720 All-in-One. Table 7. Chipset  Description Values Chipset Integrated in the processor...

  • Page 27: 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 27 7720 All-in-One. Table 9. External ports  Description...

  • Page 28: Ethernet

    Ethernet The following table lists the wired Ethernet Local Area Network (LAN) specifications of your Inspiron 27 7720 All-in-One. Table 11. Ethernet specifications  Description Values Model number RTL8111HSD-CG Transfer rate 10/100/1000 Mbps Wireless module The following table lists the Wireless Local Area Network (WLAN) modules supported on your Inspiron 27 7720 All-in-One.

  • Page 29: 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 that are supported on your Inspiron 27 7720 All-in-One. Table 16. Media-card reader specifications  Description Values Media-card type One SD-card 3.0 slot...

  • Page 30: 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 27 7720 All-in-One. Table 18. Power adapter specifications  Description Option one Option two Type 90 W AC...

  • Page 31: 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 27 7720 All-in-One. Table 19. Display specifications  Description...

  • Page 32: Gpu-Integrated

    Controller Memory size Memory type NVIDIA GeForce MX550 2 GB GDDR6 Environmental The following table lists the environmental specifications of your Inspiron 27 7720 All-in-One. Table 22. Environmental   Feature Values Recyclable packaging BFR/PVC—free chassis Vertical orientation packaging support Multi-Pack packaging...

  • Page 33: 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 27 7720 All-in-One. Airborne contaminant level: G1 as defined by ISA-S71.04-1985 Table 24. Computer environment  Description Operating...

  • Page 34: 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 35: 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 36: Esd Field Service Kit

    Always place parts in your hand, on the ESD mat, in the computer, 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 37: Transporting Sensitive Components

    It is recommended to use the traditional wired ESD grounding wrist strap and protective anti-static mat always when servicing Dell products. In addition, it is critical to keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

  • Page 38: 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 39: Major Components Of Inspiron 27 7720 All-In-One

    Table 25. Screw list (continued) Component Screw type Quantity Screw image Display assembly M3x5 Display panel M3x3 Major components of Inspiron 27 7720 All-in-One The following image shows the major components of Inspiron 27 7720 All-in-One. Working inside your computer...
  • Page 40 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 41 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 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 14. 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 15. 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 17. 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 18. 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 19. Removing 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 48: Stand Hinges

    Figure 20. Installing bottom cover 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

    Figure 21. Removing 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.

  • Page 50: System-Board Shield

    Figure 22. Installing the stand hinges 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.

  • Page 51: Installing The System-Board Shield

    Figure 23. Removing 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 52: Hard Drive

    Figure 24. Installing the system-board shield Steps 1. Align the screw holes on the system-board shield with the slots on the display-assembly base. 2. Place system-board shield on the display-assembly base. 3. Replace the four screws (M3x5) that secure the system-board shield to the display-assembly base. Next steps 1.

  • Page 53: Installing The Hard Drive

    Figure 25. Removing 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 54: Solid-State Drive

    Figure 26. Installing the hard 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 55: Installing The M.2 2230 Solid-State Drive

    NOTE: This procedure applies only to computers shipped with an 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. Figure 27. Removing the M.2 2230 solid-state drive Steps 1.
  • Page 56 Figure 28. Changing 2280 to 2230 The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure. Figure 29. 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.

  • Page 57: 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 that is installed on your computer depends on the configuration ordered. The supported card configurations on the M.2 card slot are: ●...
  • Page 58 About this task NOTE: The M.2 card that is installed on your computer depends 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. Before replacing an M.2 2280 solid-state drive with an M.2 2230 solid-state drive, move the screw mount as shown in the following figure.

  • Page 59: Memory Module

    3. Slide the solid-state drive into the M.2 card slot on the system board. 4. Replace the screw (M2x3.5) that secures the solid-state drive to the system board. Next steps 1. Install the system-board shield. 2. Install the cover. 3. Install the back cover.

  • Page 60: 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 61: 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. Figure 35.

  • Page 62: 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. Figure 36.

  • Page 63: Retractable-Camera Assembly

    5. Replace the screw (M2x3.5) that secures the wireless-card bracket to the wireless card. 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.

  • Page 64: 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 65: Installing The Fan

    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 fan and provides a visual representation of the removal procedure. Figure 39. Removing the fan Steps 1.

  • Page 66: Speakers

    Figure 40. 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 67: Installing The Speakers

    Figure 41. Removing 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.

  • Page 68: Coin-Cell Battery

    Figure 42. 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 the system board. Next steps 1.

  • Page 69: Installing The Coin-Cell Battery

    Figure 43. 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 70 Figure 44. 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 71: 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 72: Installing The Heat Sink- Uma

    Figure 45. 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 and the display-assembly base. 2. Lift the heat sink off the system board and display-assembly base. Installing the heat sink- UMA CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 73: Removing The Heat Sink- Discrete

    Figure 46. Installing the heat sink- UMA 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 74: Installing The Heat Sink- Discrete

    Figure 47. 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 and the display-assembly base. 2. Lift the heat sink off the system board and display-assembly base. Installing the heat sink- discrete CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 75: Media-Card Reader

    Figure 48. Installing the heat sink- discrete 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 76: Installing The Media-Card Reader

    Figure 49. Removing the media-card reader 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. Gently slide and remove the media-card reader, along with its cable, from the media-card reader slot. Installing the media-card reader CAUTION: The information in this section is intended for authorized service technicians only.

  • Page 77: Power-Button Board With Usb

    Figure 50. 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 78: 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 51. 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 79 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 52.

  • Page 80: System Board

    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 1. Follow the procedure in Before working inside your computer.
  • Page 81 Figure 53. System-board connectors 1. Solid-state drive slot 2. Touchscreen-cable connector (optional) 3. Camera-cable connector 4. Backlight-cable connector 5. Fan-cable connector 6. Coin-cell battery 7. Memory-module slots 8. Speaker-cable connector 9. Microphone-module cable connector 10. Media-card reader cable connector 11. Wireless-card slot 12.
  • Page 82 Figure 54. Removing the system board Removing and installing Field Replaceable Units (FRUs)

  • Page 83: Installing The System Board

    Figure 55. Lifting the system board off the chassis Steps 1. Disconnect the touchscreen cable from the system board. NOTE: This cable is only available on computers that support the touch option. 2. Disconnect the camera cable from the system board. 3.
  • Page 84 Figure 56. System-board connectors 1. Solid-state drive slot 2. Touchscreen-cable connector (optional) 3. Camera-cable connector 4. Backlight-cable connector 5. Fan-cable connector 6. Coin-cell battery 7. Memory-module slots 8. Speaker-cable connector 9. Microphone-module cable connector 10. Media-card reader cable connector 11. Wireless-card slot 12.
  • Page 85 Figure 57. Placing the system board in the chassis Removing and installing Field Replaceable Units (FRUs)
  • Page 86 Figure 58. 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 87: Microphones

    10. 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 88: Installing The Microphones

    2. Peel the tape that secures the microphone cable to the display-assembly base. 3. Remove the microphone cable from the routing guides on the display-assembly base. 4. Lift the microphone module off the display-assembly base. Installing the microphones 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.

  • Page 89: Antennas

    12. Follow the procedure in After working inside your computer. 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.

  • Page 90: Installing The Antennas

    Steps 1. Remove the antenna cables from the routing guides on the display-assembly base. NOTE: Make a note of the cable routing, before removing the them form the routing guides. Also, the location of the antenna modules are printed on the display-assembly base as ANT-B (black) and ANT-W (white). 2.

  • Page 91: Display Panel

    3. Install the speakers. 4. Install the system board. 5. Install the integrated heat sink discrete heat sink. 6. Install the M.2 2230 solid-state drive M.2 2280 solid-state drive, as applicable. 7. Install the wireless card. 8. Install the memory module.
  • Page 92 Figure 63. Removing the screws Figure 64. Removing the display panel Removing and installing Field Replaceable Units (FRUs)

  • Page 93: Installing The Display Panel

    Steps 1. Remove the 12 screws (M3x5) that secure the display panel to the display-assembly base. 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 94 Figure 66. 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 95: 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 96: Installing 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. Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 97 Next steps 1. Install the display panel. 2. Install the power-button board with USB. 3. Install the stand hinges. 4. Install the microphones. 5. Install the speakers. 6. Install the system board. 7. Install the integrated heat sink discrete heat sink.

  • Page 98: Chapter 7: Software

    Your Inspiron 27 7720 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 Base article, Drivers and Downloads FAQs 000123347. Software...

  • Page 99: 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 computer.

  • Page 100: 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 101 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. Devices Information Panel Type Displays the Panel Type of the system.
  • Page 102 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 103 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 104 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 105 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 106 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 107 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 108: 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 109: 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 110: 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 111: 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 about how to reset Windows or application passwords, see the documentation accompanying Windows or your application.

  • Page 112: 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 launched by the BIOS internally. The embedded system diagnostics provides options for particular devices or device groups allowing you to: ●...
  • Page 113 (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 114: 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 115: Wi-Fi Power Cycle

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

  • Page 116: 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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