BoiseBaked said:
AberdeenBill said:
It's fixed: many, many, many thanks Jonathan. Perhaps you could explain in a sentence or two how an anti virus program could cause such carnage.
To confirm that this is a good fix, I have a built system very similar to yours and shortly after I installed AGV 9.0 free, began getting SYSTEM_SERVICE_EXCEPTION BSODs at login in time. I used safemode to get into msconfig and stop both the AVG startup and service. Rebooted, logged in and uninstalled AVG. No more SSE BSODs.

So that begs the question: is there a recommended anti-virus that will not crash Windows7 64bit?
Yes, there is. Microsoft Security Essentials.

As a Microsoft product, it is guaranteed to play well with Windows.