Originally Posted by Liverandbacon
It appears that the BSOD had nothing to do with power problems, as those have been sorted out for a while, and it happened last night.
You shouldnt rule it out so quickly. There could be power fluctuations at your mains that whilst tolerable by most equipment, really irritate pcs, which need to suck juice at a steady rate - especially when a high end GPU is in there powering away at an intensive computational task like F@H.
This is why UPS devices exist
Have a read of this
for some more info, and keep an eye on it.