Hello- I was wondering if I could have some help in troubleshooting my computer. I have a 2.4ghz i5 15" MBP I purchased January 15th, 2011. Yesterday, the computer kept acting like I was plugging in a display... It changed resolutions, and I kept losing the desktop background, with a blue screen replacing it. Today, first it refused to boot up, then after multiple PMU resets, it decided to start up, albeit very slowly (about 10 minutes, and I have an ssd) When it got to the desktop, it was completely unresponsive, so I force shut it down, and rebooted. Now there are only coloured lines on my display... same thing if I plug it in to my Apple Cinema Display. I'm quite concerned about this computer... I am right in assuming a GPU/Logic Board issue? I'll probably be taking it to the Genius bar within the week, I just wanted an advance opinion. Thanks!