All the sudden I had a message across my screen in white letters that said I needed to hold down my restart button, shut down and restart. It was almost like a blue screen with Windows?? When I booted back up it said that there was something unexpected that happened with OSX do you want to check the logs? I clicked yes but nothing popped up. Is there anyware I can check, is there a log of some sort that I can go to to look at what caused this? Just curious.