This is not to be confused with my laptop cooling problem post as this is my bedroom tower with the similar problem.
Ok, my system is an AMD dual core 2.9, and even though the heat sinc is pristenly clean and the fan too, and I also used arctic silver paste, the cpu shoots up to 90+ c at the light hint of a load. when idle it's happy at 29c, and also stays that way when watching HD video. but the second I put even a basic game like Farm Frenzy (not very graphic intensive at all, nor cpu), up it goes in like 5 seconds. after 15 the pc will shut off if I don't close it.
The thing is, I have a pci express2 nvidia 9600 1g graphics card, but I can't monitor that to give a reading. None the less, the cpu should not do that.
I have tried stripping down, and re-seating the lot (with fresh paste) but it hasn't worked.
I've made sure it's all sat properly, and I have also checked the cpu fan is spinning (graphics card fan is spinning too).
I don't know what else to try, but right now, I have a huge expensive brick of a dvd player.
Full specs are..
AMD dual core 2.9 (seated with arctic silver paste)
2 gig ram
Nvidia 9600+ 1gb ram (using dvi to HD tv)
I'm using windows 7 but that shouldn't make a difference.
Thanks for reading.