Windows 8 and 8.1 Forums


Cannot boot and no fixes works - Error 0xc000021a

  1. #1


    Posts : 1
    Windows 10

    Cannot boot and no fixes works - Error 0xc000021a


    Hi

    I upgraded from Windows 7 to Windows 10 and it was working fine for a few days but now I get BSOD with error code 0xc000021a everytime I boot it. I've tried the following 'fixes':

    System restore --- Runs for a few minutes and then says "Could not restore your computer. No changes were made"

    Clicking on any of the advanced startup options --- BSOD

    Reinstalling windows 10 with a usb --- Results in it going into circles with this message "The computer started using the Windows installation media. Remove the installation medial and restart your computer so that Windows starts normally. Then, insert the installation media and restart the upgrade. [Do not select iCustom [advanced]I to perform an upgrade. iCustom [advanced]I installs a new copy of Windows and deletes your programs and settings.)"

    I've taken the usb out and restarted the computer several times, even called Microsoft Technical Support. They had no idea what to do.

    I used to be able to access the command prompt and I tried everything suggested in this article here https://neosmart.net/wiki/0xc000021a/. The reason I say "used to" is because things recently got alot worse when I changed the boot order and now it just turns black after the bios screen. I've tried to restore to default and I also tried everything suggested in this article 3 Ways to Reset Your BIOS - wikiHow

    Nothing works. Please help.

      My System SpecsSystem Spec

  2. #2


    If you have access to a working PC, the NeoSmart link might help: https://neosmart.net/wiki/0xc000021a/
      My System SpecsSystem Spec

  3. #3


    Posts : 2,690
    Windows 3.1 > Windows 10


    Reinstalling windows 10 with a usb --- Results in it going into circles with this message "The computer started using the Windows installation media. Remove the installation medial and restart your computer so that Windows starts normally. Then, insert the installation media and restart the upgrade.
    to do an upgrade - you run setup.exe from within your current OS
    to perform a Clean install you boot from setup media and choose custom..

    if you are now having issues You should clean install windows 10 - when asked for key - just choose Skip..
      My System SpecsSystem Spec

Cannot boot and no fixes works - Error 0xc000021a
Related Threads
0xc000021a error at boot Win 8.1 Pro wmc x64 in BSOD Crashes and Debugging
Hey guys I keep getting the following BSOD 0xc000021a error at boot on Win 8.1 Pro wmc x64. I cannot log on to windows, as I have computer background, I have tried to diagnose it myself but unfortunately I am at a dead end and need help. The only way I can gain access is by running Win 8.1 with...
BSOD error 0xc000021a while on Chrome in BSOD Crashes and Debugging
Hello guys, I was on chrome and all of a sudden I got a BSOD with the error code 0xc000021a Dump file attached, thanks for all your help in advance. This community has always been amazing at helping me fix my BSOD issues. I appreciate it! :) 57719 The full memory dump...
Error 0xc000021a unsolvable?!?!?! in BSOD Crashes and Debugging
Alright so here I go... I get home from work and boot my PC, only to find it wasn't responding to anything and the clock dissappeared from the welcome screen. So, as most other people would, I hard reset it as it would not respond to the power button. However, I seem to have created a problem...
(BSOD) 0xc000021a, unable to boot in BSOD Crashes and Debugging
I would like to say I'm sorry in advance. I'm unable to use the required programs to neatly bundle and zip the crashlogs. This is my only computer in the house at the moment and I'm am only able to write this from a live usb of Unbutu I flashed at university. As the title suggests, I can't boot...
Windows 8.1 pro "0xC000021A" error at boot in BSOD Crashes and Debugging
hello everybody, suddenly today when i tried to boot my pc pc i faced the "0xC000021A" error. I have tried a lot of things such as safe mode, windows auto repair and "bootrec /fixmbr" & "bootrec /fixboot" commands but nothing worked...I am desperate... Thanks in advance for your help :)
Bluescreen error 0xC000021A in BSOD Crashes and Debugging
Hello, I have installed Windows 8 Pro on my PC and on my Laptop. The problem is since yesterday the laptop ist showing the error 0XC000021A. It only writes that my PC ran into a problem and needs to restart. After a restart it just writes the system must be recovered and if I click on "Recover" it...
Installation error 0xc000021a in Installation & Setup
I've downloaded Windows 8 Developer Preview With Developer Tools 64bit Image file and burn it into a usb hdd. Whenever i want to install it says like that.......... Your PC ran into a problem that it couldn't handle, and now it needs to restart. You can search for the error online:...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook