hmm well for one I'd check for virus' or spyware. Having this happen after 2 weeks of nothing is a little odd, but it could be you just didn't hit certain parameters within the game that could cause the old video card to act up. I'd encourage everyone to download and install the free version of ad-aware and scan your system. It will remove the blaster worm and probably others.
http://www.lavasoftusa.com/I'm in no way affiliated with them, but the free product really helps people that mess around on their PC's a lot and get mass amounts of spyware.
Save game files should move just fine to another system.
