Since I have installed SP2, I have been prompted to activate. I have done this by phone as it cannot do it via my Internet connection. I have followed the steps, rang the number, entered the code and it has been accepted. I can then use it ok. When I switch off and back on again, I have to go through the same procedure. I have copied both sets of codes so that I don't have to ring up, but am getting fed up having to do this every time I switch off/on the PC. I have looked in the registry at:-
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion] and it had "RegDone"=""
I changed this to 1, but still no joy. I was able to register no problem when I originally setup the system.