Well if you leave it under a lot of stress all the time, then it's bound to happen :P
I'd see if you can get a PSU to test with temporarily from a friend or something, or take it into a shop and see if they can do a similar test
PSU might be shot.. Do you have an older PSU you could throw in temporarily to see if it fixes the problem? (Make sure it's enough power to actually run the machine though)
First letter from my first name, first 3 from my last name.
Recently I've been using enjoi in games, It's the name of a skateboard/clothing company, and I just like how it sounds. It's nice and simple.