The error always appears in the form of a STOP message, better known as a Blue Screen of Death (BSOD).
How to Fix Blue Screen Of Death BSOD Stop Error Code 7B (0x0000007B, 0x80786A48, 0xc0000034)
Restart your computer if you haven't already. The STOP 0x0000007B blue screen error could be a fluke.
Did you just install or change a hard drive controller? If so, there is a good chance that the change you made caused the STOP 0x0000007B error. Undo the change and test for the 0x7B blue screen error.
Depending on the changes you made, here are some solutions you could try: