I have a one year old Dell computer. I have had this problem before, but it fixed itself. I turn on my computer, and usually the first time it stays on for 10 minutes. After that, it shuts of by itself, stays off for about 2-3 seconds, and turns on again. It stays on from 2 seconds to 1 minute, after that, it turns off again. Its been like this the past week and does not seem to fix itself. I have checked the fan from the power supply and seems fine. Any idea what it might be?
Thanks
ps. the fan from the power supply is fairly new because i changed the old one. it is 3 months old.