okay. well I tried all this the first time I installed Windows 7 and it worked, this is what I don't understand. Something's altered which is causing it to play up, and the last thing I want to do is send it back for diagnostics.
I first installed windows 7 home premium a few weeks ago, and up until a few days ago it worked fine. Now whenever I try to shut down or reboot the system, it seems to freeze on the "logging off" screen, although the blue circular doughnut still goes round, giving the impression that it's still...