help after automatic update restart now BSOD error BSOD with error message 0xc000021a stuck in loop

Discussion in 'Crashes, BSODs and Debugging' started by Bruceyfamily, Apr 13, 2016.

  1. Bruceyfamily

    Bruceyfamily

    Joined:
    Apr 13, 2016
    Messages:
    5
    Likes Received:
    0
    My laptop is running Windows 10 and after an automatic update restart I now have a blue screen and error message 0xc000021a. Tried auto repair and a reset and system restore but they have all failed. Now stuck in a crashing loop. Also tried to boot in safe mode and this has failed.

    Tried all the suggestions on microsofts help page and now wish I never allowed it to restart.
     
    Bruceyfamily, Apr 13, 2016
    #1
    1. Advertisements

  2. Bruceyfamily

    Trouble Noob Whisperer Moderator

    Joined:
    Nov 19, 2013
    Messages:
    10,149
    Likes Received:
    1,466
    Location:
    Northwest Indiana U.S.A.
    As you probably know by now, that message usually indicates that there are some critical system files missing or corrupt and will usually require a re-install of Windows.
    Do you have a backup of all your critical data? Do you have a recent disk image that you could use to recover from?
     
    Trouble, Apr 13, 2016
    #2
    1. Advertisements

  3. Bruceyfamily

    Bruceyfamily

    Joined:
    Apr 13, 2016
    Messages:
    5
    Likes Received:
    0
    Thanks for your reply. I need to borrow a laptop so I can check on my external drive what information I have backed up. Not sure what a disk image is so don't think so. Will reply Asap.
     
    Bruceyfamily, Apr 15, 2016
    #3
  4. Bruceyfamily

    Bruceyfamily

    Joined:
    Apr 13, 2016
    Messages:
    5
    Likes Received:
    0
    Hi Yes I have backed up photos/files etc on an external hard drive. I have been given a Windows 10 professional disc to boot from
     
    Bruceyfamily, Apr 16, 2016
    #4
  5. Bruceyfamily

    Trouble Noob Whisperer Moderator

    Joined:
    Nov 19, 2013
    Messages:
    10,149
    Likes Received:
    1,466
    Location:
    Northwest Indiana U.S.A.
    A disk image is something I wrote about in this thread. https://www.windows10forums.com/threads/please-for-your-own-peace-of-mind.794/
    There are various third party software programs, as well a windows native function that will allow you to perform such a task.
    As long as Windows 10 Pro is the same version that you had installed and the disk that you have been given is for the same system architecture (32 or 64 bit), you should be able to boot from that and reinstall Windows 10.
    Otherwise you should be able to generate your own installation media from here
    https://www.microsoft.com/en-us/software-download/techbench
    Choose Windows 10, the first item in the first drop down (not single language at the bottom)
    Next choose your language and your bit version (32 or 64 bit to match your system architecture or in the case of an upgrade, to match your currently installed version of Windows).
    That will provide an ISO that will upgrade (or clean install) either or both Windows 10 Pro and Home.
    Once you have downloaded the ISO you can use ImgBurn to burn it to a DVD http://imgburn.com/index.php?act=download
    OR
    Rufus to burn it to a USB ThumbDrive http://rufus.akeo.ie/
     
    Trouble, Apr 16, 2016
    #5
  6. Bruceyfamily

    Bruceyfamily

    Joined:
    Apr 13, 2016
    Messages:
    5
    Likes Received:
    0
    Hi the windows 10 disk is ok to use as laptop is 64 bit. How do I now get it to boot from the disk?
     
    Bruceyfamily, Apr 17, 2016
    #6
  7. Bruceyfamily

    Trouble Noob Whisperer Moderator

    Joined:
    Nov 19, 2013
    Messages:
    10,149
    Likes Received:
    1,466
    Location:
    Northwest Indiana U.S.A.
    You could either change the boot order / boot device priority in the BIOS or you could simply select it from the boot menu.
    Boot menu is often F12 but could be different, check your documentation.
    Likewise BIOS is often F2 but can also be different, sometimes the Delete Key, it varies but your documentation or the computer or motherboard manufacturer's support website should have the proper information.
     
    Trouble, Apr 17, 2016
    #7
  8. Bruceyfamily

    Bruceyfamily

    Joined:
    Apr 13, 2016
    Messages:
    5
    Likes Received:
    0
    I have changed it in the boot order using F12 as this goes to the Toshiba Setup Utility. When I then close this and restart it then Shows the Toshiba logo and says Preparing Automatic Repair at the bottom./ then Diagnosing your PC and then the Blue Error Screen saying your PC did not start Correctly.

    I can choose to Restart or Advanced options.
     
    Bruceyfamily, Apr 17, 2016
    #8
    1. Advertisements

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads
  1. Darren

    SOLVED 0xc000021a W10 Preview BSOD

    Darren, Jul 22, 2015, in forum: Crashes, BSODs and Debugging
    Replies:
    3
    Views:
    33,121
    Sin Stalker
    Sep 25, 2015
  2. buythiscomputer
    Replies:
    4
    Views:
    2,671
    Trouble
    Nov 9, 2015
  3. Alexey Grigorieff

    Windows 10 Automatic Repair Restart Loop

    Alexey Grigorieff, Sep 25, 2015, in forum: Crashes, BSODs and Debugging
    Replies:
    25
    Views:
    194,524
  4. Geerey7

    BSOD error 0xc000021a crash

    Geerey7, Nov 17, 2015, in forum: Crashes, BSODs and Debugging
    Replies:
    1
    Views:
    1,713
    Trouble
    Nov 17, 2015
  5. Moretta
    Replies:
    1
    Views:
    1,289
    Trouble
    Jan 15, 2016
  6. Pedro Moreira

    SOLVED Windows 10 Recovering Crash, And now I'm stuck in an Infinite Reboot Loop

    Pedro Moreira, Jul 12, 2016, in forum: Crashes, BSODs and Debugging
    Replies:
    3
    Views:
    1,068
    Trouble
    Jul 12, 2016
  7. fx2342
    Replies:
    12
    Views:
    971
    dalchina
    Sep 2, 2016
  8. TheMaineEvent

    Crashed, now in infinite automatic repair loop

    TheMaineEvent, Nov 17, 2016, in forum: Windows 10 Support
    Replies:
    1
    Views:
    426
    Trouble
    Nov 18, 2016
Loading...