I'm waiting with my breath held!
Just found this forum/thread after a BSOD. Really quickly, but I don't want to compromise the thread: I built the machine 2 months ago and it has been running flawlessly. Then BSOD and now file corruption. Dang. After a disk scan (not easy in Win7) which seemed to finish overnight without leaving a message, I started replacing corrupted programs. (It *seems* to be all relatively newly installed applications.) Then, after a day, Win 7 hangs at the login screen.
Changes lately include
* Allowed Win 7 SP1 what seems about a week ago.
* AVG updated itself even though I told it to ask first (I guess this becuase it suddenly decided the game BioShock had a virus, which I doubt. Why now? But I often see that AVG has new virus defs without me downloading them.)
* And a couple of weeks ago I started to get AMD Raid errors. The tool says nothing much, and they seem to happen when the computer goes to sleep, so I assumed it may just be a false positive.
Anyway, I'm interested to see if AVG is the culprit in your case.