Posted 04 December 2010 - 10:28 PM
Have you cleaned our your computer physically and software wise?
As stated above, use those compressed air to spray all your fans, heatsinks, and anything you can think of. Just make sure you don't touch anything!
Also, remove unwanted programs or applications, defrag your hardrive, clean your %temp%, remove spyware or adware, fix registry; basic stuff.
Perhaps upgrade your hardware, more RAM, better CPU, faster HDD or get an SSD. These are things you need to think about.