Initially I used regback registry to fix USBPCap USB not working problem . After sometime It gave 0xc000021a BSOD . So i used Windows 10 iso to repair and messed it up with bootrec and bcdedit commands.
Now Windows 10 iso opens Windows 7 recovery options.
Tried SFC and dism.
I am able to boot PC only by disabling driver signature enforcement . Which I can select only from 0x0000001 error after multiple restarts from BSOD.
Debugging minidump showed ntoskrnl to be causing 0xc000021a error. Reset and restore not an option
Incidents may not be related
Also startup repair using windows 10 iso which shows Windows 7 logo and UI gives OS mismatch error.
Answer
Got recovery back to normal by setting boot mode to UEFI in BIOS.
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