I was searching for another question, found this thread, similar issues as you guys. I was able to fix and hope this helps you too.
My rig M4A89GTD PRO/USB3, 4GB Corsair DDR3 1333, Phenom x4 945, 950W PSU. New build had BSOD with the RAM too. I did the RMA with the RAM, etc, etc. (Corsair Support was GREAT!). Tried everything all of these posts mentioned and nothing worked.
My solution was power, my rig was plugged into my UPS and either at boot or 20 minutes into using the PC it would quit. Restarting was an issue, I had to pull the power plug and drain the charge from my PSU by tapping the ground prong to true ground. Only then would I get the PC to boot again. I finally realized that my UPS battery was not up to the task of supporting the power demands of my rig. I switched banks from battery backup to only surge protection and the rig held stable. Haven't had a BSOD since. I was originally running on WINXP x32 and upgraded to WIN7 x64 and still steady as a rock. No one has mentioned that part of the equation so far in your posts so maybe something else to consider. BTW, my BIOS settings are all set to AUTO for RAM timings, etc.