Hmm well. My old tower is equipped with 4 cooling fans / systems.
My new tower is just standard.
So what i'm going to do is tear down my hardware from my new PC, and build it over in my old tower.
Then i'll format the PC and install Windows Vista 64 bit edition. Instead of Win XP 32 bit which i'm using now.
Let's hope this will help otherwise I'm out of options.
Goddamnit, all this trouble just for GTA IV.