Windows 10: 0xc000021a - endless reboot loop

Discus and support 0xc000021a - endless reboot loop in Windows 10 BSOD Crashes and Debugging to solve the problem; Hello, a problem has risen with my Windows 10 system laptop.I keep getting the stop code 0xc000021a AND I can't access the advanced options/settings.... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by MariaHLM, Oct 16, 2021.

  1. MariaHLM Win User

    0xc000021a - endless reboot loop


    Hello, a problem has risen with my Windows 10 system laptop.I keep getting the stop code 0xc000021a AND I can't access the advanced options/settings. I've forced the computer to turn off at least thrice in a row while loading, but it's not happening: I still get the code & reboot loop. My goal was to get to the safe mode or something, anything but the loop.I've tried to reinstall Windows 10 via a usb drive, but my computer isn't reacting to the drive at all. There's no CD slot.I've also desperately tried pressing all kind of F8-F12 and Shift keys and some of their combinations while

    :)
     
    MariaHLM, Oct 16, 2021
    #1
  2. Sharief K Win User

    Windows 10 endless loop reboot

    Hi,

    • Have you checked if the hard disk is set as first boot device in the BIOS?
    • Which version of Windows is installed on the computer?
    • What did the HP supported suggested you to fix the issue?

    I suggest you to follow the steps provided in the following article and check if it helps.

    Windows 10 endless loop reboot

    If the issue persists, please get back to us with the more information about the interaction with HP support and the outcome of the issue.
     
    Sharief K, Oct 16, 2021
    #2
  3. Guru Kiran G, Oct 16, 2021
    #3
  4. AS_95 Win User

    0xc000021a - endless reboot loop

    Windows 10 Anniversary Update Reboot in endless loop

    I updated my HP Windows 10 Pro laptop with the recent Windows 10 Anniversary update. It was successful for the most part however the last update reboot went into an endless loop for more than 24 hours, so I have tried Shift+F8 at Power-on and the self repair
    has failed, the rollback to previous install has failed, now I am doing reinstall to factory setting while saving my data. It has also been in endless loop for more than 12 hours. Can someone please suggest a solution?

    Also I had the same endless loop reboot problem on my Desktop upgrade, however I was able to overcome by aborting the reboot with Ctrl-C. I suspected that my Norton Antivirus may be keeping in the endless loop so I uninstalled it. My desktop issues is now
    resolved.

    However the same Ctrl-C is not working on Laptop. Also my laptop does not have antivirus but Windows Defender, so it is not the same issue there. I suspect it is some driver that is not compatible, but I not sure how to override or rollback to previous install?
     
    AS_95, Oct 16, 2021
    #4
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0xc000021a - endless reboot loop

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