Multiple Crashes On Several Installs. Ntoskrnl.exe And Hal.dll 0x109

I built a computer back in May...a few weeks later I started getting BSODs. They don't happen all too often, about 1 or 2 times per week.After trying to google the issue, they suggested running memtest - no errors, driver verifier found nothing, etc. So I re-installed windows, the same thing happened, I re-installed windows again, still get a blue screen every once in awhile.Then I noticed my power supply started making a humming noise, I ignored it, then one day it sparked and died. I thought that was the cause of all my issues until I replaced it with a temporary one and a few days later got another blue screen.It's always either ntoskrnl.exe or hal.dll, I didn't keep all the crash dumps from my previous installs.