When I click on shutdown, it looks like it will shutdown, but it restarts. When I use the Power button, it will shutdown. I made sure everything was connected right. And then checked it again, now my led works, it did not work before. I have XP SP1. Asus A7N8X (nondeluxe) 2100T-bred b. OC to 166fsb. I tried easing back on the OC. I even did a clean install. Anyone have any ideas?