Not the ram. Having the same issue with tested sticks. I'm Going to try a clean install of Win7 ult. Also, the chip drivers(so i'm told) can also cause this, as can bent pins on the processor(in my case, not the issue). I'm currently running gskill 1333 2x2s in sequence(in dimms 3 &4) and its showing them as a 4 gb single module...weird,right. Tried them installed in dimm 1&3 and 2&4 as msi manual instructs and black screen, no post. as a single 2gb in slots 3 OR 4 and bsod. Trying to upgrade to 2x4 (8gb dual) and it should just click and run. Also learning about how malware can alter your kernel drivers. There is so much CRAP on this install. Learning my lesson on just installing things in program filesx86. don't do it! Good luck.