Thanks for the help. As far as other info., it just kind of started out of the blue... Besides long hours of CAD, Sketchup, and/or playing COD, it seems to happen after my computer has been running for a long time but that's about all that i have noticed b/c it's very random when it does happen. Theres been about 10 days between each time it's happened, but i'll pay more attention to the details from now on.