Sometimes when I use my mbp, it will randomly freeze up, show weird lines on the screen and beep, even if the volume is turned all the way down. Here is a video I recorded last time. What could it be? Also, my MDP port is really finicky. By the way, it is the MBP in my sig. It hasn't happened in a month expect for last night and today now. It has probably done it a total of 5 times.
http://s131.photobucket.com/albums/p300/Longbarrelsniper/?action=view¤t=CIMG0098.mp4
http://s131.photobucket.com/albums/p300/Longbarrelsniper/?action=view¤t=CIMG0098.mp4