I don't know if there's any hardware/system people out there, but here we go.
I Just finished a new PC, Windows 7 Pro, and have a gtx 660 twin frozr.
Whenever my computer goes to sleep or hibernates, it crashes. I'm usually asleep so I see the BSOD for a sec and it's scrambled too so I barely see the stop code 0xc4. If i don't let the computer sleep or hibernate i'm good. Has anyone had an issue with a 660 or know the issue?