''invalid format'' blackscreen?

I was able to play league just fine, but the next day i got a black screen saying ''''invalid format'''' upon leaving draft and entering the actual game. i tried deleting config and setting things from 0 to 1, i am not able to use ctrl or alt +enter of whatever since i have a blackscreen!! i tried rightclicking my screen and changing my nvidea resolution. if you have the answer please do tell! thanks, -Jasper
Report as:
Offensive Spam Harassment Incorrect Board