Our comp was running like a dog othe last week or so it kept locking up running slow etc. I disconected it all to have a proper look and maybe upgrade a few parts.
Opened up the case and it was choked with dust, CPU fan, PSU, Graphics card.... all thick with dust. Quick run around with the old dyson and put back together.
Now its running so much better... quieter too!
My wife is quite house proud and dust is her enemy, so I was suprised quite how much dust it had inside.
Also used CCleaner and did a registry tidy up and its running even better
20 mins work and no money spent resulting in a slightly better performing machine