So I have started having some issues with my early-2011 Macbook Pro. I think it is the video issue that's been covered extensively but just want to make sure. I did withing the last month upgrade the machine to 16Gb of Ram and 500Gb SSD and for the first couple weeks never had a problem. I've had a couple kernal panics that have shut the computer off and I've had to restart it and occasionally when I have iTunes open for example, there will be lines in just the window open where the picture is distorted or black lines. It's weird that it happens only in open windows though and not on the whole screen. I took it in to the Genius Bar since it's still covered under the warranty for the graphic issue but it passed their tests. Is this a graphics card issue and if so what can I do to get it to fail that test? If it isn't the known issue that these have what else could it be? Thanks in advance.