This started, that I noticed, maybe four weeks ago. I select shutdown from the start menu. Desktop starts closing down. Get the waiting for programs screen. Monitor blacks out, All fans stop. Silence. Sounds good, unless I move the mouse, then everything starts up again. It hasn't actually shutdown, it's more like sleep mode. The only ways to shut down properly is to hold the start button down on the box or send to sleep and mains power off (on the PSU). To be honest, neither is a preferred way I like to shut down my PC. Apart from anything else I get a lot of "didn't shut down properly" screens with either method, plus I give the Step-Daughter major ear grief for using the power off button to shut down! Any ideas?