Hi guys, I was playing a video game on my PC today when all of a sudden my screen turned into a bunch of lines, that I can only describe as being a plaid pattern. I hit the power to turn off my pc and when it rebooted the same lines were all over the screen again, and I was unable to see anything on screen much less do anything about it. I think windows still loaded, but I could hear my PC rebooting after a few mins. Do you think that my graphics card is not working or is it something else. Thanks.