I know the thread is kind of old, but I need a little help guys.

I found out my ram kit was bad, so I ordered a new one. Ran it through memtest86, passes.
CPU @ stock settings passes small FFTs on prime95 no issue.

If I do ANY type of OCing, I get a hardlock that requires me to turn the PSU off. This was the same w/ the good and bad ram. No amount of vcore/PCH etc helps at all. Stability is random and usually fails quickly. I'm running stock right now which SUCKS!

Here's my hardware:
Ga-H55N-USB3
i5 760
G.Skill ripjaws 2133mhz
Sg07 w/ 600w silverstone
gtx470 MSI
OCZ Agility 120gb drive.
Edit:
Rolled back to bios F5 from F6a to see if that was the issue (it's not).

I am kind of lost guys, so any hints or settings to disable/enable would help a ton.