Game crash?

The game crashes after champ select. The whole story: I opened my launcher, got a message wich said I needed to repair my patcher, so I did, after that, I logged in and was going to play a game with somke of my friends, when I locked in (Ezreal if it helps) The game closed on me, I got no blackscreen, it just closed itself. I try pressing the reconnect button, and the window closes itself, I decided to make a smurf (only to log in and play a custom to see if this happend again (this time tristana) And the exact same thing happend, Help! My friends need me!!!