Then Windows started asking to be reactivated - which was done and the activation messages have now gone. The computer now loads up and (seem's to be) stable.
However there are a fewproblems (that might be related)
1 - It's not on the network, it's connected to the router via ethernet cable but it doesn't seem to be showing up anywhere.
2 - The USB ports don't work (Though I'm not sure if they've been tested since Window's was reactivated.)
3 - The display is different, the start menu looks like this :
Though It used to look like this
I think that there might be some services disabled / limited (via msconfig) though it's been a few day's since I was on the computer.
Was wondering If there was anything obvious or how I should try to sort this out? Any log's or anything I should try?