Game crash after champ select

Just recently I have had trouble with my game crashing after the champ select. I am on patch 6.7. I can login and load into champ select just fine, but as the game is supposed to go to the loading screen, it just shows a black screen with the league of legends logo on it. Then a pop up box shows up saying that it can't connect to the game and to check my connection to try again. I have tried everything from the logitech fix to uninstalling and reinstalling the game. PLEASE HELP!!!