I reboot my PC last week as the computer seemed not responding and I ended up like this:
First, it was a black screen with 'autochk program not found - skipping AUTOCHECK
Then, the blue screen appeared, revealing the error code 0xc000021a
The computer automatically restarted and directed me to the automatic repair screen. Choosing restart will cause the PC to repeat the error again.
I tried the method stated in http://appuals.com/best-fix-steps-fix-error-0xc000021a/ but it does not work.
I downloaded GTA V from steam on the day before the PC crashed and I ran it. This was the only program I download recently before the PC crash