I just swapped out PSU's on my main rig. I believe something came loose on the old PSU as I was hearing a horrendous sound last night when trying to sleep. When the PSU's were swapped, I happened upon a small screw with no idea where it happened to drop from, my main guess being my old PSU (although how it happened, I still haven't figured it out).
My main rig is now up and running again, this time with a 600W Corsair PSU. That damn screw woke me up from a deep slumber, and I'm one of those people where a tornado can crash through the house and I'd ask what happened the next morning. Hopefully I can try and salvage the old PSU as it still supplied juice to my rig.