Could somebody please help. I have had 2 repairs on a top of the range MacBook Pro within 4months (new motherboard and graphics card/2nd repair new SSD drive). Graphics card wasn't rendering movies properly & SSD was having intermittent problems. In the video I have posted, it shows a problem I have with iTunes, this problem was also occurring before new SSD drive. I have to force quit iTunes and then it will work. Do you guys reckon it can be hardware related again, as continues to happen with new logic board, graphics card and SSD drive? Apple can't give me a solution other than repair again, only just got it back from extensive testing. They won't replace or refund my money, they have told me that I'm must go down the consumer law route.