Possible Graphics Problems?

[Hurlstone]

An odd thing just happened. I had just logged into the game and got to the loading screen with the little Moogle, and then the screen just went black and all the lights died on my keybord/mouse. I realized then it had, for some reason, locked me out and I had to re-log into my laptop! I went back in and 'CTRL + ALT + DELETE'ed' my way out of the game, and then tried logging back in, which this time worked perfectly. Could this be a symptom of something? Since updating my drive to the new beta one, things have been working alright everywhere else, I think.

As I said before, any help would be extremely appreciated!