https://www.youtube.com/watch?v=VPSLvkZh0K0 I know this issue happens to other people, but I never really found out what caused it or the solution to this problem. I have AppleCare on my computer, so taking it to Apple wouldn't be a problem, but I've had this issue ever since I got it in June of 2013. It's a mid-2012 rMBPro. It only comes up like maybe once or twice a month, but it's still annoying none-the-less. I believe it's tied to Safari since it explicitly happens when Safari is running. The computer goes COMPLETELY unresponsive, no keyboard inputs work, no touch pad, it won't sleep when the lid is closed, and the only remedy is to hard power off then back on. Sometimes when I have music playing while the issue pops up, the music actually starts skipping and loops that same split second over and over until I turn the computer off. What should I do y'all?