Re: Mouse freezing on loading screen.
Hello,
I tried all the things you suggested, including wiping the nvidia driver and re-installing from the windows surface pack.
Unfortunately, it hasn't really improved much.
The mouse doesn't actually freeze anymore, I can now move it - however, the game doesn't respond to clicking the mouse. I.e., when we got to the home screen there was a dialogue box about game packs currently downloading - I was supposed to be able to click 'okay' to remove the dialogue box, but clicking the 'okay' button didn't do anything.
The fact that the mouse does move now is better than before, but I still can't play the game.
Thanks for all your efforts, though. :-)