I've never had any previous issues but a little while ago my screen turned completely red and I couldn't do anything else. So I rebooted and it showed the Apple icon boot screen but had pink candy stripes and then went to an all gray screen. It wouldn't go any further. I tried rebooting a couple of times but it did the same thing. I rebooted and held down apple+r which then also took me to the gray screen. So i left it and went to lunch. When I came back my screen was black. I held the power button to turn the screen off and then turned it on. This time it booted like normal and I'm typing this on it. So, I have no idea what is going on. I can see that there may be a known issue with the AMD Radeon 6970M used in these machines, but I don't know if it's an issue here. Any way to check for that? Should I take my machine in to have it checked out? Thanks for any feedback.