I only know little about computers, but my computer restarts as I get to my desktop. It restarts when I did scandisk, mcafee virusscan, and defragmentation. Its been doing this for a while and I have no virus or worms or trojans. So, I formatted my hard drive and it still continues to restart 5 to 10 seconds to my desktop. I installed a new hard drive and it does the same thing. What could be the problem? Can somebody help me?