Contents 1 Working on your computer......................5 Safety instructions................................5 Before working inside your computer........................... 5 Electrostatic discharge—ESD protection........................6 ESD field service kit ................................6 Transporting sensitive components..........................7 After working inside your computer..........................7 2 Disassembly and reassembly......................8 Recommended tools................................8 Screw size list..................................8 Side cover....................................9 Removing the right-side cover............................9...
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Assigning a system setup password........................... 64 Deleting or changing an existing system setup password..................65 4 Troubleshooting......................... 66 System diagnostic lights..............................66 Diagnostic error messages..............................66 Diagnostic error messages..............................69 System error messages..............................72 WiFi power cycle..................................73 5 Getting help..........................74 Contacting Dell..................................74 Contents...
Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
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 For this reason, some previously approved methods of handling parts are no longer applicable.
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.
Disassembly and reassembly Recommended tools The procedures in this document require the following tools: • Phillips #0 screwdriver • Phillips #1 screwdriver • Plastic scribe-Recommended for field technician Screw size list Table 1. Vostro 5090 Component Screw type Quantity Image Color Right-side cover #6-32...
Side cover Removing the right-side cover Prerequisites 1. Follow the procedure in Before working inside your computer. About this task The following images indicate the location of the right-side cover and provide a visual representation of the removal procedure. Steps 1.
Installing the right-side cover Prerequisites About this task The following images indicate the location of the right-side cover and provide a visual representation of the installation procedure. Disassembly and reassembly...
Steps 1. Align the tabs on the right-side cover with the slots on the chassis and slide it towards the front of the computer. 2. Replace the two screws (6-32) that secure the right-side cover to the chassis. Next steps 1.
Steps 1. Place the computer in an upright position. 2. Gently pry and release the front-cover tabs sequentially from the top. 3. Move the front cover outward from the chassis. 4. Disconnect the front-LED cable from the connector on the front cover. Installing the front bezel Prerequisites About this task...
Steps 1. Place the computer in an upright position. 2. Align the front-cover tabs with the slots on the chassis. 3. Move the front cover towards the chassis and snap it into place. Next steps 1. Install the right-side cover. 2.
Steps 1. Lay the computer on the right side. 2. Disconnect the data and power cables from the optical drive. 3. Push the securing tab to release the optical drive from the chassis. 4. Slide and remove the optical drive from the slot. Installing the Optical drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Insert the optical drive into the slot. 2. Align the optical drive assembly with the tabs on the chassis. 3. Route the power cable and data cable through the routing guides and connect the cables to the optical drive. Next steps 1.
About this task The following images indicate the location of the memory modules and provide a visual representation of the removal procedure. Steps 1. Lay the chassis on the right side. 2. Use your fingertips to carefully spread apart the securing-clips on each end of the memory-module slot. 3.
Steps 1. Align the notch on the memory module with the tab on the memory-module slot. 2. Insert the memory module into the memory-module connector until the memory module snaps into position and the securing clip locks in place. NOTE: The securing clips return to the locked position.
Steps 1. Lay the computer on the right side. 2. Remove the single (M2x3) screw that secures the wireless card to the system board. 3. Slide and lift the wireless-card bracket off the wireless card. 4. Disconnect the antenna cables from the wireless card. 5.
Steps 1. Align the notch on the wireless card with the tab on the wireless-card slot. 2. Slide the wireless card at an angle into the wireless-card slot. 3. Connect the antenna cables to the wireless card. 4. Slide and place the wireless-card bracket on the wireless card. 5.
About this task The following images indicate the location of the graphics card and provides a visual representation of the removal procedure. Steps 1. Lay the computer on the right side. 2. Locate the graphics card (PCI-Express). 3. Lift the pull tab to open the PCIe door. 4.
Steps 1. Align the graphics card with the PCI-Express card connector on the system board. NOTE: To install the NVIDIA GeForce RTX 2080 graphics card, rotate and install the graphics card. 2. Using the alignment post, connect the card in the connector and press down firmly. Ensure that the card is firmly seated. 3.
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2. Remove the right-side cover. About this task The following images indicate the location of the 2.5-inch hard drive and provide a visual representation of the removal procedure. Steps 1. Disconnect the data and power cables from the hard drive. 2.
3. Pry the hard-drive carrier to release the tabs on the assembly from the slots on the hard drive. 4. Slide and remove the hard drive off the hard-drive assembly. NOTE: Note the orientation of the hard drive so that you can replace it correctly. Installing the 2.5-inch hard drive assembly Prerequisites About this task...
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Steps 1. Place the hard drive into the hard-drive carrier and align the tabs on the carrier with the slots on the hard drive. 2. Snap the hard drive into the hard-drive carrier. Disassembly and reassembly...
3. Slide the hard-drive assembly into the hard-drive cage until it snaps into place. 4. Connect the data cable and power cable to the hard drive. Next steps 1. Install the right-side cover. 2. Follow the procedure in After working inside your computer.
Steps 1. Lay the computer on the right side. 2. Disconnect the data and power cables from the hard drive. 3. Remove the cables from the routing guides on the hard-drive assembly. 4. Remove the single (6-32) screw that secures the 3.5-inch hard-drive assembly to the chassis. 5.
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Steps 1. Insert the hard drive into the hard-drive cage. 2. Replace the four (6-32) screws that secure the hard drive to the hard-drive cage. 3. Align the hard-drive assembly with the tabs on the chassis. 4. Using the alignment post, align the screw hole on the hard-drive assembly with the screw hole on the chassis. 5.
Coin-cell battery Removing the coin-cell battery Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the right-side cover. About this task The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure. Steps 1.
Insert the coin-cell battery into the socket with the positive side (+) labeled facing up and snap the battery in the socket. Next steps 1. Install the right-side cover. 2. Follow the procedure in After working inside your computer. Solid-state drive Removing the 2230 solid-state drive/Intel Optane memory module Prerequisites...
Steps 1. Remove the single (M2x3) screw that secures the 2230 solid-state drive/Intel Optane memory module to the system board. 2. Slide and lift the 2230 solid-state drive/Intel Optane memory module from the M.2 card slot on the system board. Installing the 2230 solid-state drive/Intel Optane memory module Prerequisites...
Steps 1. Locate the notch on the 2230 solid-state drive/Intel Optane memory module. 2. Align the notch on the 2230 solid-state drive/Intel Optane memory module with the tab on the M.2 card slot. 3. Slide the 2230 solid-state drive/Intel Optane memory module into the M.2 card slot on the system board. 4.
Steps 1. Remove the single (M2xL3) screw that secures the solid-state drive/Intel Optane memory to the system board. 2. Slide and lift the M.2 2280 solid-state drive/Intel Optane memory from the M.2 card slot on the system board. Installing the M.2 2280 solid-state drive/Intel Optane memory module Prerequisites About this task...
Steps 1. Locate the notch on the M.2 2280 solid-state drive/Intel Optane memory. 2. Align the notch on the M.2 2280 solid-state drive/Intel Optane memory with the tab on the M.2 card slot. 3. Slide the M.2 2280 solid-state drive/Intel Optane memory into the M.2 card slot on the system board. 4.
Steps 1. Lay the computer on the right side. 2. Disconnect the fan cable from the system board. 3. Gently pull the fan to release it from the rubber grommets. 4. Remove the fan off the chassis. Installing the chassis fan Prerequisites About this task The following images indicate the location of the chassis fan and provide a visual representation of the installation procedure.
Steps 1. Align the slots on the fan with the rubber grommets on chassis. 2. Route the rubber grommets through the slots on fan and pull the rubber grommets until the fan snaps into position. 3. Connect the fan cable to the system board. Next steps 1.
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About this task The following images indicate the location of the power-supply unit and provide a visual representation of the removal procedure. Power-supply unit with single connector. Disassembly and reassembly...
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Power-supply unit with dual connector. Disassembly and reassembly...
Steps 1. Lay the computer on the right side. 2. Disconnect the power cables from the system board and remove them from the routing guides on the chassis. 3. Remove the three (6-32) screws that secure the power-supply unit to the chassis. 4.
Steps 1. Press and hold the securing tab on the chassis and slide the power-supply unit into the chassis until it snaps into position. 2. Replace the three (6-32) screws that secure the power-supply unit to the chassis. 3. Route the power cable through the routing guides on the chassis and connect the power cables to their respective connectors on the system board.
2. Remove the right-side cover. About this task The following images indicate the location of the base cover and provide a visual representation of the removal procedure. Steps 1. Locate the processor fan and heat-sink assembly on your computer. 2. Disconnect the processor-fan cable from the system board. 3.
Steps 1. Align the screw holes on the processor fan and heat-sink assembly with the screw holes on the system board. 2. As per the callout on the system board, tighten the captive screws that secure the processor fan and heat-sink assembly to the system board.
Steps 1. Press the release lever down and then push it away from the processor to release it from the securing tab. 2. Extend the release lever completely and open the processor cover. CAUTION: When removing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.
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Steps 1. Ensure that the release lever on the processor socket is fully extended in the open position. 2. Align the notches on the processor with the tabs on the processor socket and place the processor in the processor socket. CAUTION: Ensure that the processor-cover notch is positioned underneath the alignment post.
System board Removing the system board Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the right-side cover. 3. Remove the wireless card. 4. Remove the memory modules. 5. Remove the solid-state drive/Intel Optane memory module. 6.
Steps 1. Lay the computer on the right side. 2. Remove the single (6-32) screw that secures the ports bezel to the chassis. 3. Disconnect all the cables connected to the system board. 4. Remove the eight screws (6-32) and that secure the system board to the chassis. 5.
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Steps 1. Align the ports on the system board with the slots on the chassis and align the system board in place. 2. Replace the single (M2x4) screw that secures the system board to the chassis. 3. Replace the eight (6-32) screws that secure the system board to the chassis. 4.
If you wait too long and the operating system logo appears, wait until you see the desktop. Then, shut down or restart your computer and try again. NOTE: After the Dell logo appears, you can also press F12 and then select BIOS setup. Navigation Keys The following table displays the system setup navigation keys.
Table 2. Navigation Keys(continued) Keys Navigation <F1> Displays the System Setup help file. System setup options NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not appear. General screen options This section lists the primary hardware features of your computer. Option Description System...
Option Description • SATA-0 • SATA-1 • SATA-2 • SATA-3 • M.2 PCIe SSD-2 SMART Reporting This field controls whether hard drive errors for integrated drives are reported during system startup. This technology is part of the SMART (Self-Monitoring Analysis and Reporting Technology) specification. This option is disabled by default.
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Option Description NOTE: Successful password changes take effect immediately. Default setting: Not set System Password Allows you to set, change, or delete the system password. NOTE: Successful password changes take effect immediately. Default setting: Not set Internal HDD-0 Allows you to set, change, or delete the password on the system's internal hard-disk drive. Password NOTE: Successful password changes take effect immediately.
Option Description Default Setting: SMM Security Mitigation is not selected. Video screen options Option Description Multi-Display This option enables or disables Multi-Display. It should be enables for Windows 7 or later. This feature is not applicable to other operating systems. •...
Option Description Enclave Memory This option sets SGX Enclave Reserve Memory Size. The options are: Size • 32 MB • 64 MB • 128 MB Performance screen options Option Description Multi Core This field specifies whether the process has one or all cores enabled. The performance of some applications Support improve with the additional cores.
Option Description USB Wake Allows you to enable USB devices to wake the system from Standby. Support • Enable USB Wake Support Default setting: The option is enabled.. Wake on LAN/ Allows you to enable or disable the feature that powers on the computer from the Off state when triggered by a WLAN LAN signal.
Wireless screen options Option Description Wireless Device Allows you to enable or disable internal wireless devices. Enable • WLAN/WiGig (default) • Bluetooth (default) Advanced configuration options Option Description ASPM Allows you to set the ASPM level. • Auto (default) • Disabled •...
3. Insert the USB flash drive into the system that requires the BIOS update. 4. Restart the system and press F12 when the Dell splash logo appears to display the One Time Boot Menu. 5. Using arrow keys, select USB Storage Device and click Enter.
Figure 1. DOS BIOS Update Screen System and setup password Table 3. System and setup password Password type Description System password Password that you must enter to log on to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer.
• The password can contain the numbers 0 through 9. • Only lower case letters are valid, upper case letters are not allowed. • Only the following special characters are allowed: space, (”), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`). 3.
BAD COMMAND OR FILE NAME Ensure that you have spelled the command correctly, put spaces in the proper place, and used the correct path name. CACHE DISABLED DUE TO FAILURE The primary cache internal to the microprocessor has failed. Contact Dell Troubleshooting...
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One or more memory modules may be faulty or improperly seated. Reinstall the memory modules or, if necessary, replace them. DISK C: FAILED INITIALIZATION The hard drive failed initialization. Run the hard drive tests in Dell Diagnostics. DRIVE NOT READY The operation requires a hard drive in the bay before it can continue.
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KEYBOARD STUCK KEY FAILURE For external keyboards or keypads, check the cable connection. Restart the computer, and avoid touching the keyboard or keys during the boot routine. Run the Stuck Key test in Dell Diagnostics. LICENSED CONTENT IS NOT ACCESSIBLE IN...
One or more memory modules may be faulty or improperly seated. Reinstall the memory modules or, if necessary, replace them. DISK C: FAILED INITIALIZATION The hard drive failed initialization. Run the hard drive tests in Dell Diagnostics. DRIVE NOT READY The operation requires a hard drive in the bay before it can continue.
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Shut down the computer, remove the hard drive, and boot the computer from an optical drive. Then, shut down the computer, reinstall the hard drive, and restart the computer. If the problem persists, try another drive. Run the Hard Disk Drive tests in Dell Diagnostics. HARD-DISK DRIVE FAILURE The hard drive does not respond to commands from the computer.
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KEYBOARD STUCK KEY FAILURE For external keyboards or keypads, check the cable connection. Restart the computer, and avoid touching the keyboard or keys during the boot routine. Run the Stuck Key test in Dell Diagnostics. LICENSED CONTENT IS NOT ACCESSIBLE IN...
The keyboard controller may be malfunctioning, or a memory module may be loose. Run the System Memory tests and the Keyboard Controller test in Dell Diagnostics or Contact Dell. X:\ IS NOT ACCESSIBLE. THE DEVICE IS NOT READY Insert a disk into the drive and try again.
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.
About this task Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: Steps 1.