You also have the option to try a system restore. The OS, videocard,

RAM, and all software need to play together nicely. Video drivers and XP are known to have a few issues. In the recent past a new ATI driver with a new videocard caused a blue screen at boot for me. ATI pointed a finger at XP, but who really knows what happened in my case. An older driver and two little BIOS changed remedied my problem then. Since all systems are unique little monsters, the Aumha.net site has some good links http://aumha.org/win5/kbcomm.php#sysrestore