Not sure whats going on the screen completely freezes. Sometimes when im watching a video on youtube the screen freezes but you can still hear sound. Ive also had it where a video freezes and so does the sound. It also happens when playing games. When I say it freezes I mean the whole screen is frozen. There is no beach ball or anything its just frozen the mouse doesnt move or anything. It does this for a minute or so. Ive tried resetting the smc and it works for a day and then it freezes again. Ive tried shutting it down and turning it on. I dont want to do a fresh install of osx as it will be a pain to re install all my programs. Anyone know what the issue is and has it happened to them ?