Hey everyone, I've been dealing with an issue with my PC, and I wanted to get some of that quality GAFer advice. For the past 4-5 months (since I moved house with my PC), my PC has been occasionally locking up with any sound looping or slowing down. This usually requires a hard reset, although sometimes it "recovers" after 10 or so seconds. It usually, although not exclusively happens during games and video playback. In recent weeks, its become massively more common, to the point that it will happen a few times daily if used heavily.
For the past month or so, I've been almost certain that it has something to do with the PSU, as physically moving the PC often requires the 24 pin connector to be reseated/"wiggled" for the PC to boot again. I've checked the pins several times and they all seem to be fine to my un-expert eye, so my guess is that the PSU is starting to crap out. The other possibility is that it's the motherboard side of the 24-pin connector that's having issues.
Before I spend money on another PSU, do any GAFers have an idea of other possibilites, or indeed how to fix potential issues without electrocuting myself?
Edit: In case it helps, the PSU is a 700w OCZ Modxstream Pro which I got with the rest of my PC's components over 3 years ago.