Ok, to start, here are my specs:
AMD X2 4400+ 2.2ghz
480w PSU (which I believe may be the problem)
I built this computer around half a year ago, and for the first 3 or 4 months I had no problem whatsoever when playing games. However now when I play source based games (well Counter-Strike: Source anyway, and possibly other games but that was the main game which I was playing when I first started noticing the problem), after about 10 minutes I notice one of my case fans (I have 2) starts to slow down. At first I thought I could of just been imagining it, but when I saw the fan had completly stopped I knew there was a problem.
I stopped playing for a while (due to that and I seemed to be busier in general) but after about 2 months of not playing I encountered the same problem; I switched off my computer, and when turning it on, the fan didn't move at all and then after about 10 seconds decided to finally move....that was when I decided to just unplug that fan. Though when playing a bit of CSS for 10 minutes, the remaining fan decided to slow down...
Now for some reason I believe it is the PSU, although I'm not paticulaly sure....I built this PC (first time, so a newbie) and had a problem with the PSU and thought I'd have to purchase a new one. I'm probably the worst person to explain this, but there were too many little holes on that ATX power connector for the actually connector, resulting in 4 extra holes when plugging in the ATX power cable (if that's what you call it?).
When we got a man at our local computer shop, who I don't actually personally trust much, to see if everything's ok, he plugged another cable somewhere else when seeing there were four missing holes, and said it should be fine.
So is it actually fine? Is there a connection between the fan slowing down and this incident with the PSU?