DirectX Error

I started a game, didnt even came in loadingscreen then the game crashe and it says:" An unknown DirectX error has occured and League of Legends cannot start. Please make sure your video card is using the latest video drivers from the manufacturer" I have the newest version of DirectX and my drivers are all updated. I dont want to get Leaverbuster just because i had this error ;( PLS HELP Screenshots: I FIXED IT!!!!!!!!!!!

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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