Update Windows 8.1

After i updated my laptop to windows 8.1, I'm stuck in a waiting page where i can't even cancel it. it's been days. So i was wondering if anyone know how to solve this problem?

That's weird!
Just found this... http://windows.microsoft.com/en-gb/windows-8/setup-stops-responding

Pretty sure it'd be safe to power it off and on - the update process probably just stalled on one of the stages.