Thank you for taking the time reading my question for help. My computer tends to freeze whenever there is a good amount of CPU power required. This can be during any game, or perhaps when I'm running my favorite chess engine. The computer will freeze commpletely, casuing me to reboot.
1.) Upgrading amount of RAM from 512 to 1024. This did nothing.
2.) Upgraded Video Card: the freezing seemed to have stopped for awhile after putting the card in, but freezing returned within a month.
3.) Attempted to cool the computer as much as possible by taking the side case-lid off and using a powerful mini-fan to blow more cool air into the computer. At first, this helped considerably, and I would rarely encounter any freezing at all. But as time has gone on, my system has seemed to freeze more and more.
4.) Kept dust out of computer by cleaning it weekly, since I knew the computer would be much more exposed to dust with the case open.
5.) Changing screen resolutions and setting my games to a "Low" setting. It doesn't seem to make a difference, high or low, it still freezes.
6.) Lowering the AGP Aperature. Makes no difference.
7.) Mounting Heatsink to the southbridge chip, in case it was overheating. Again, nothing.
8.) Replaced Power Supply in case of a power supply failure. Old supply was 300 W, new one is 480 W, but this made no impact.
I also format on a montly basis, and I am positive this is not a software problem. I've run out of ideas as what is causing this freezing.