For a long time now, I have not been able to shut down my computer. No software problem, this I know, and I can tell you why. I go to Start, Shut Down, and it goes through the motions of shutting down and then it shuts down. After about 2 or 3 seconds, it turns back on. I have heard that my power switch is not properly connected, but I turned it around and still the same problem. Nothing wrong with my computer, except the fact that I cannot turn it off!