Originally Posted by Blade 117
In this since it still works with old hdd in new pc it was most likely a bum bios or a power supply issue since it only occurred when pc was under load of both gpu and cpu
In my experience faulty power supplies don't cause BSODs. Faulty power supplies, if anything, tend to produce random reboots. I have an HP EX490 MediaSmart Server that started rebooting randomly, and I could reproduce the problem on demand simply by applying heavy I/O load to the hard drives. The server had a single SSD and three 7200 RPM HDDs. Once those three HDDs had a sustained load, the server would reboot itself. Replacing the PSU solved the problem for me.
Of course, just because I never had a BSOD resulting from a bad PSU doesn't mean it can't happen. Fortunately PSUs are pretty easy to replace, so it may be worth replacing the PSU if you don't want to scrap that machine.