Have a new HP Pavillion TouchSmart 23 with Windows 8 pre installed & updated to windows 10.
Above error showed in white text on black screen.
Turned off computer which then showed:-
Your PC ran into a problem and needs a re start. Showing error 0xc000021a
Then I waited for a restart which did not happen so turned off computer and restarted then had option to go to advanced options restart in safe mode by pressing f5 which shows error: Critical_Process_Died
Can you help please