I dont know whether it's a hardware problem, or I have to reinstall windows. After I finish and exit games such as Battlefield 2142, Counter-strike: Source on steam, or World of Warcraft, a couple of seconds later it crashes to a blue screen saying unhandles exeption. Now this doesnt happen all the time, but it happens frequently. Do you think it's a software problem? I have all the drivers updated, including Nforce chipsets drivers, video and sound. I built my PC myself Pentium D - 805 Gigabyte 8ip775-g Raedon X850 AGP 1GB Kingston 400Mhtz DDR Should I format and reinstall windows?