If you can change Numlock status on the keyboard than Windows maybe doing something. If you cannot than it definitely hang up.

>When turning off Windows it offered option to install updates then turn off, which I chose. That lead to a message not to unplug machine, indicating that it would turn itself off automatically. That happened almost an hour ago...
>
>Is that normal? What can be done if so much time passes, for example 24 hours, that it probably means a hung process?
>