1.    01 Mar 2017 #1
    Join Date : Mar 2017
    Posts : 3
    Windows 10

    BSOD Error Code 0xc000021a after attempting to install updates


    Where do I even start?
    A client of mine came to me with their HP desktop and were saying it could not boot and restore points were not even working. I thought I would have this worked out in no time. I was wrong.

    Here is the details for everything:
    - Error code is 0X000021a and I can only see it when I, attempt to, boot into Safe Mode (Which all Safe Mode options do not work.)
    - Normal booting into the OS results in a mainly blue screen with thin lines and streaks cutting through the screen and nothing is distinguishable.
    - I tried System Restore and there is nothing there to access, says Windows.
    In this next section, I run commands from the Command Prompt in the Windows Troubleshooting section of the boot.
    - SFC scans result in this now: "Windows Resource Protection could not perform the requested operation."
    - Chkdsk: Regular Read-Only mode tells me "No further Action is required" and running the extended commands, such as /f /r, takes a huge amount of time and I only did that once. No dice.
    - DISM commands seem like such a good idea but I can run only one of them and it does not help me in any way. Say I run "DISM /Online /Cleanup-Image /CheckHealth" it gives me "Deployment Image Servicing and Management Tool. Version 10.0.14393.0.
    Error: 50. DISM does not support servicing Windows PE with the /Online option."
    And if I try any other DISM commands, more errors, like Error 2.
    - System Repair does not work.


    I like to fix computers, not just wipe them out and start over. Although, I am at my wits-end here and before I reinstall Windows 10, I figure I would come here first for advice.

    Anything is appreciated!

    Thanks.
      My ComputerSystem Spec
  2.    02 Mar 2017 #2
    Join Date : Jun 2015
    Posts : 12,854
    Windows 10 Pro

    Download an ISO from this post (Win10PE with preinstalled software that could help troubleshooting) and in the file explorer search for dump files in C:\Windows\Minidump. Copy these files to a different storage device. Then upload the dumps via a working system after zipping the dumps (the site does not support the dump extension)
      My ComputersSystem Spec
  3.    02 Mar 2017 #3
    Join Date : Mar 2017
    Posts : 3
    Windows 10
    Thread Starter

    Quote Originally Posted by axe0 View Post
    Download an ISO from this post (Win10PE with preinstalled software that could help troubleshooting) and in the file explorer search for dump files in C:\Windows\Minidump. Copy these files to a different storage device. Then upload the dumps via a working system after zipping the dumps (the site does not support the dump extension)
    This is a fantastic tool, thank you for directing me to it!

    As far as the Minidumps, I grabbed all of the ones at the system room (Windows, the C drive) and made them into a 7-zip. Would you like to look at them?

    Also, while running the PE program, I tried running the DISM commands and I can locate my USB flash drive with Windows 10 installation on it and mount it but then it fails with an "Error: 50" again. Do you want those DISM details as well?

    -Edit- Err, turns out I grabbed the temp files but now, there is not such thing as a "Minidump" folder on the hard drive...
      My ComputerSystem Spec
  4.    02 Mar 2017 #4
    Join Date : Jun 2015
    Posts : 12,854
    Windows 10 Pro

    If the minidump folder hasn't been generated, the BSOD process couldn't finish. That means that either the RAM has become faulty, the connection with the motherboard is bad or the hard drive is bad.

    You may be able to use HDTune (preinstalled program) and check the health of the hard drive.
      My ComputersSystem Spec
  5.    03 Mar 2017 #5
    Join Date : Mar 2017
    Posts : 3
    Windows 10
    Thread Starter

    The hard drive health is good for now, it appears.

    I think something is seriously messed up. After trying more and more commands in the prompt, nothing is working. Ultimately, I decided to "Reset the PC" to make things easier. Well, they aren't. I have this now "Reset this PC. The drive where Windows is installed is locked. Unlock the drive and try again."
    What? Is this a BIOS issue, complete corruption of the drive, what could it be now?
      My ComputerSystem Spec
  6.    03 Mar 2017 #6
    Join Date : Jun 2015
    Posts : 12,854
    Windows 10 Pro




    BSOD Error Code 0xc000021a after attempting to install updates Diagnostic Test BSOD Error Code 0xc000021a after attempting to install updates
     RAM TEST

    Run MemTest86+ to analyse your RAM. MemTest86+ - Test RAM - Windows 10 Forums

    Note   Note


    MemTest86+ needs to be run for at least 8 complete passes for conclusive results. Set it running before you go to bed and leave it overnight. We're looking for zero errors here. Even a single error will indicate RAM failure.


    Make a photo of the result and post it.

    Addition:
    If errors show up you can stop the test, remove all sticks but 1 and test this single stick in each slot for 8 passes or until errors show, switch sticks and repeat.
    If errors show up and you see them a lot later, no problem, the errors don't affect the test.
      My ComputersSystem Spec

 


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