Desktop PC boots to black screen after ASUS BIOS update

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After searching around Google, I came upon a post where somebody experienced a similar issue and managed to fix it by simply doing the following:

  1. Force the PC to shut down
  2. Unplug the power cord from the PSU for 20-30 seconds; enough so that there's no dormant power left over
  3. For good measure, if your motherboard/CPU has embedded graphics, temporarily connect your monitor to that instead of your GPU
  4. Plug the power cord back in and then boot the system

Some notes:

  • This is strictly for desktop PCs (not laptops). If you're on a laptop, you might need to disconnect both the power adapter and the battery to completely shut it down
  • If your system was not bricked because of the BIOS update, you should see a message on the screen stating that the BIOS update is resuming, and that you should not cut the power to the PC
  • If the BIOS update was successful, your PC will restart again to a vanilla POST screen (not the splash screen) and you will need to press F1 here and to set everything in the BIOS back to your own
    preferences again
  • From what I can tell, the BIOS update did succeed after the
    flash in the BIOS, but the installation simply glitched out and failed to complete the remaining steps after restarting

Some things I should've done before I updated my BIOS:

  • Saved a copy of my BIOS configurations to a .CMO file in a USB drive
  • Reset my BIOS settings to default before the update
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Cake Princess
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Updated on September 18, 2022

Comments

  • Cake Princess
    Cake Princess over 1 year

    I tried to update my ASUS motherboard's BIOS just now, but after the installation reached 100% on the update screen, the PC restarted and then simply hung indefinitely on a black screen with no response from the PC whatsoever after a long period of time. The PC wouldn't even POST.

    (Was solved by myself; possible solution is below)