Computer will not recognize keyboard on start up


  1. Tristanosaur
    Posts : 1
    10
       New #1

    Computer will not recognize keyboard on start up


    When I turn on my desktop computer, the lights on my USB connected keyboard will briefly flicker on and then turn off. The keyboard is then unresponsive, and I cannot log on because I can’t input my password. The computer and keyboard worked fine for two years until one time I plugged in my iPad and the keyboard stopped working.

    The keyboard does work before the windows screen loads, so I can enter BIOS. The second I see the windows 10 logo the lights turn off and the keyboard stops working.

    I have tried two different USB keyboards to no avail. I have connected them to my laptop, and they ar functional. My external drives power on when the computer does, so I’m assuming that th USB ports are working (I’ve tried them all). Since the keyboard does not work, I am unable to try updating the drivers.

    What do I do?
    Last edited by Tristanosaur; 27 Feb 2018 at 17:19. Reason: New problems
      My Computer
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  3. zbook
    Posts : 41,473
    windows 10 professional version 1607 build 14393.969 64 bit
       New #2

    There have been recent problems with Spectre and Meltdown.
    Windows updates were produced and they had unforeseen side effects.
    https://support.microsoft.com/en-us/...ectre-meltdown
    There is a known problem with recent Windows updates with USB ports (problems with mouse and keyboard).
    The fix is to remove the latest Windows update.
    Look at these links to see if any of them are applicable to your situation:

    https://support.microsoft.com/en-us/...stalling-the-j
    https://support.microsoft.com/en-us/...ry-13-2018-upd
    https://support.microsoft.com/en-us/...date-kb4074588
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  4. Lange666
    Posts : 29
    Windows 10 Pro
       New #3

    Did you miss this topic:

    Keyboard and mouse not recognized after boot-up! Solved - Windows 10 Forums
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  6. EdTittel
    Posts : 4,224
    Windows 10
       New #4

    Blogged about this today, too, with the most popular fixes: Fixing Missing Mouse or Keyboard - Windows Enterprise Desktop.
    HTH,
    --Ed--
      My Computers
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