I have had a toshiba Satellite for a few years. Let me tell you i have had nothing but problems with it hard drive crashed, cd-w/dvd rom stoped reading dvds (i replaced that). I have recently had the computer turn of after any process that makes the processer work for a long period of time i.e Virus scan. I noticed the Fan was not working correctly so i replaced it. Same thing computer turns off. I noticed the processer is burning hot after its working for a long time. I also tried re-applying the heatsink gel, no good. Could it be the heatsink it self ?