ok guys, just watching a little youtube and all the sudden the screen goes to a bunch of pinks and blues. i could still see the picture of the video i was watching but it wouldn't let me get out of the page. i tried control,alt,delete, and escape and npthing. i had to shut it down using the power buttons. any ideas would be greatful. computer does come back on without issues as of right now. i updated my driver a while back to the newest nvidia driver. i wonder if that could be it. never had this problem before.
G74SX-DH71, i7 2670QM(2.2GHZ) GTX560M 3GB DDR5 24GB RAM @ 1333MHZ 1TB (1x256GB SSD/1x750GB HDD @ 7200 RPM) 17.3" LED 1920 X 1080 Intel ultimate n 6300 wlan