You might also want to disable the automatic restart due to a system crash so you can get more info from the Blue Screen of Death which could let you research the error.

To disable the automatic restart: Start > Run > sysdm.cpl > OK > Advanced > Startup and Recovery > Setting > uncheck "Automatically Restart" > OK > OK.

I do agree with PP, this does sound like a corrupt/incompatible driver issue, possibly either IDE/RAID or Video Card.