Windows 10: "Unknown Hard Error" when starting PC for the second time

Discus and support "Unknown Hard Error" when starting PC for the second time in Windows 10 Ask Insider to solve the problem; So when I start my PC in the morning, it wouldn't start, it just shows the background of the login screen with no way to interact but to shutdown the... Discussion in 'Windows 10 Ask Insider' started by /u/gloisnog, Feb 22, 2021.

  1. "Unknown Hard Error" when starting PC for the second time


    So when I start my PC in the morning, it wouldn't start, it just shows the background of the login screen with no way to interact but to shutdown the system manually. After rebooting and logging in, I get a popup saying "Unknown Hard Error" even before the login is completed. I can't remember changing anything this just started happening one morning.



    Whenever I want to turn on my PC now, I gotta do it twice and the popup will always come. I am using the Windows 10 Build 18363.1379

    submitted by /u/gloisnog
    [link] [comments]

    :)
     
    /u/gloisnog, Feb 22, 2021
    #1

  2. Unknown hard error

    Hi,

    My laptop had been perfectly fine all day yesterday, but when I went to watch TV on it in the evening the screen suddenly went all blue and it started coming up with “Unknown hard error”. I tried a couple of suggested solutions like pressing Windows + R
    (suggested by Google) but to no avail as nothing happened at all.

    Can anybody help?

    Many thanks,

    Lauren
     
    LaurenStanley, Feb 22, 2021
    #2
  3. DaveM121 Win User
    New Setup -Unknown Hard Error

    Hi Parren, Usually, the System Warning: Unknown Hard Error is triggered by corrupted system’s files or registry entries . ..

    At the top of that error dialog there should be a process or dll listed in the dialog header - what is listed there?
     
    DaveM121, Feb 22, 2021
    #3
  4. GregZara Win User

    "Unknown Hard Error" when starting PC for the second time

    sihost.exe unknown hard error

    My PC recently updated and I have an empty deskstop. Believe it's due to sihost.exe unknown hard error. I tried to do the 5 fix at Fix: sihost.exe Unknown Hard Error after Windows 10 April 2018 Update 1803 | Driver Talent

    I have done "Perform a Clean Boot on Your Windows 10" but it did not work.

    I could not Run SFC/Scannow Command and Run CHKDSK Command Press Windows + X is not working.

    Likewise my start menu is not working.

    Please help
     
    GregZara, Feb 22, 2021
    #4
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"Unknown Hard Error" when starting PC for the second time

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