The installation went smoothly until now, it's stuck on this screen:
"Installing Service Pack: Stage 3 of 3 - 0% complete. Do not turn off your computer."
It's been like that for about 2 hours now (At time of writing), and it's obvious that it's not going to do anything. So what do I do? Turn it off? Use some kind of button combination? Yell at it?
Edit: I got fed-up of waiting and turned it off, and turned it back on again. For whatever reason, it worked. So I suppose that's how you fix it.
Edited by Pokeh, 20 March 2008 - 06:29 PM.
