About two weeks ago my pc started crashing during games. It freezes and I am forced to turn it off manually. Then upon boot, my computer will turn on and off repeatedly only reving fans no splash screen. Usually it does boot, however as of late it keeps doing that until I reset the CMOS. So then it will boot sometimes it will run fine, other times as soon as I get to the desktop it'll blue screen. I looked up some of the error codes and they were due to corrupt drivers or hardware issues. So, somewhat drastically, I wiped my ssd and reinstalled win8. No dice the same problem occured during gaming or stress tests (kombustor). Checked my temps during a stress test, they were fine. Occasionally when I boot I'll get a bios error message about RAM(This has only appeared a couple times and only after the crashes started happening.) I ran memtest for quite a while and no errors were found on either stick. My PSU had problems previously so I figured perhaps the crashes occurred due to heavy load, I RMA'd it and the crashes continued. So here I am I think I've ruled out about everything but the mobo and my gpu. I should also mention that the crashes only started to occur after I moved my rig downstairs to use, something could have and probably did break at this point (if somethings broken) Thoughts?
I5 4670k stock clocks
msi 780 ti gaming edition also stock clocked
8gb kingston hyperx black
EVGA supernova nex750b 750watt 80+ bronze
asrock z87 extreme 4
Thanks in advance