pixel bug in-game, includes photo, need help!

[quote=paahema]http://imageshack.us/f/839/lolbug2.jpg/ That is a sreenshot taken as im playing, as you can see there is clearly some kind of bug that errors the pixels. I tried to search about it but didn't find anything useful. And yes I have already re-installed and tried the repairing, didn't help. I have also updated my drivers etc. I have also tried different games and they work perfectly without any errors so my computer is functioning as it should. Any ideas what is causing this? I think it has something to do with the update that just came, because these symptoms started to occur 8 hours ago. It would be fine if there was only be couple of those errors but they keep stacking up and at the end of the game its almost impossible to even see anything[/quote]