closed Windows 10 Error Code 0xc000021A Problem

0 votes
asked Jan 29, 2016 by zd9999 (120 points)
closed Feb 2, 2016 by zd9999
Any solutions? Tried everything on http://appuals.com/best-fix-steps-fix-error-0xc000021a/
Additional Details ASUS K501UB, i7-6500U, 12GB RAM, 1TB SSHD, NVIDIA GeForce 940M. Windows 10.
closed with the note: Question answered
commented Jan 30, 2016 by kevinarrows (5,110 points)
Were you able to disable driver signatures and are you able to get to the Advanced  Menu?
commented Jan 30, 2016 by zd9999 (120 points)
When I tried to disable driver signatures I just got "Your PC ran into a problem and needs to restart...error code: 0xc000021a". And yup I have access to the advanced options and troubleshooting pages.

This all started yesterday morning when I woke up, opened my laptop, and then typed in my password to sign in as I then got a black screen. I could still see my cursor move around and I could use ctrl+alt+delete to view task manager (starting task explorer.exe through administrator did not fix it), log off, or restart/shut down.

So I then used shift+restart to access the advanced options menu. But after this I seem to have got stuck in the Windows 10 blue screen of death cycle where ANYTHING I try leads to "Your PC ran into a problem and needs to restart". I haven't tried System Restore yet because it says 'Local Disk (C:) (System) - You must enable system protection on this drive' and so I cannot click Next button.
commented Jan 30, 2016 by kevinarrows (5,110 points)
Can you re-enable driver signatures, and go back to Windows using Task Manager. Once there, go to Device Manager and tell me what display adapters are listed there?
commented Jan 30, 2016 by zd9999 (120 points)
When I try to 'Exit and continue to Windows 10' I get the same message again of "Your PC ran into a problem and needs to restart"
commented Jan 30, 2016 by kevinarrows (5,110 points)
Please unplug all external devices, USB devices and reboot PC back into Advanced Mode. From there, get to Safe Mode and tell me if you are able to log into it.
commented Jan 30, 2016 by zd9999 (120 points)
Same thing again unfortunately. Unplugged everything, shut the laptop down, used F8 to get into advanced boot options, pressed 'Safe Mode', I then get the ASUS logo for a few seconds before the blue screen pops up with 'Your PC ran into a problem and needs to restart'.
commented Feb 1, 2016 by kevinarrows (5,110 points)
I would suggest a clean reinstall of Windows.
commented Feb 2, 2016 by zd9999 (120 points)
Yeah just did it and now everything is up and running again thankfully.

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