Alright, I just got a bluescreen. It looked something like this...

It happened when I exited a fullscreen video on Youtube, the whole computer froze. This happens sometimes when I'm loading big pages, like a big tumblr, some minecraft things, etc. It's only on Chrome, so not sure if Chrome is the problem or not. Is there anything I can do to prevent this from happening? Will it happen again? Should I be worried?