Crazy Pixels

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http://ubuntuforums.org – Hi everyone, I've been using ubuntu for a couple years now and I've never had a single problem, but this morning I started having this issue: the whole screen filled with dancing,flickering, crazy pixels. I don't know what the problem could be, I didn't install or touch anything, I shutted down the computer last night and when I turned it on this morning to work with it there they were. If I boot it in recovery mode everything works fine, though. I also have Archlinux installed in other partition and also have the same problem. I would really appreciate any help, this is really annoying. Than (Hardware)