What's with the jumble mess?
I've gotten taht message before visiting such places as best buy believe it or not.
Maybe they're using a sort of system that doesn't agree with windows?
Happened with my old XP computer. I thought it was the end of that computer but I just shut it down and turned it back on and did what you said with the unexpected shut down but otherwise it kept working fine.
That also seems to happen alot using Firefox too.