sounds like the MS Blast Worm to me if you get a message that looks somthing like, "an important process has been terminated, windows must shut dwon in ..." and a countdown then it is definatly the MS Blast Worm. To avoid getting it again, use a firewall
when i disable my firewall I usually get it once every half hour
My friend is running nero burning software. and it not showing any message before it restart. Therefore, I think It could be the driver inside was problems. Would anyone could tell me how to find it out and fix it.