Hi
Every time i go to shut my laptop down it goes onto the greenish blue vista "shutting down" screen, but never actually shuts down. Last time i tried to shut it down it showed me this screen for about 10 minutes, went black, then the backlight came on and flickered for a while, then it rebooted the whole laptop after giving me a screen that looked like barcode.
This started happening just recently, I dont think Ive made any changes to the pc, and its also started going into screensaver mode even though i've set it not to (and i haven't changed the settings)

Any ideas what could be wrong with it or what I could do?
Thanks
lbrookes