|Listen to jam, he touched on the most crucial part of your problem. To add to his comment, I suggest:|
-- You look for a BIOS update for your machine, if it's that old, chances are; there's an update for it.
-- Make sure you have the latest chipset driver installed.
-- Go to nVidia's site & download the latest display driver for your display adapter.
-- Last but not least, make sure when you are using the machine, the fan (intake & exhaust) outlets are not clogged up & not obstructed, this is to alleviate heat related issues during load.
Windows 7 News!