PSU Damaged?

[[sYn]]

Hello all! I recently startted OC'ing my 6800GT, all was going well, it was a little hot but I was informed the card ran hot anyway and it was nothing to really worry about. During a after hours computing session on Saturday my PC crashed, when checking the system temps I noticed the CPU was sitting at around 45 idle.. this was not the case a few weeks ago. The CPU was also hitting 60 at load!!! Having run a number of tests with the new and old card, cleaning the HSF and other various things I have come to the conclusion that my OC'ing efforts have caused the PSU to become damaged, making it give out too much power to the CPU/MOBO causing an overall overheat.

Does this happen a lot? Is it known? Or do you feel I have an issue else where that I am overlooking?

Either way I have a test PSU (borrowed from work) to try out tonight, I will post my results later on in the evening assuming my PC is back in working order.

FYI: When removing your Mobo/CPU/HSF always check your bios is in the same condition, in a fit of maddness (and rush to test my cleaned HSF) I stupidly didnt check my Bios and it had disabled my RAID - 500GB RAID0 gone thanks to windows check disk :P!

[[sYn]]

ok, so I've tested it with the new PSU. This is an unopened "tagan 420w" PSU. The system seems to run perfectly, the temps are below:

Idle: 33
Load: 52
System: 29 - 40

But when playing games my FPS is MUCH lower than I was used too before this disaster! Battlefield is giving me 10FPS with full everything @ 1600x1200 - Before I was getting 60FPS! Could this be due to the fact that I am using a 420w PSU as apposed to the 450 reccomended for this card? Any help would rock!!

thanks