Why does my Laptop Keep Shutting Down?

If your laptop keeps restarting or shutting down, there are two possible reasons. One the processor could be overheating, or you could have a virus. If the bottom of the laptop feels hotter than normal, then it is your processor. Make sure you have adequte ventilation when operating your laptop. Do not sit on the bed or anything soft which will block the air vents on teh bottom of the computer. If it is a virus, which it sounds like you can use a virus removal tool to get rid of it. From the behavior you describe the only virus which is know for such behavior is the msblast virus. Symantec has a tool to remove the blaster worm. For more information look here: