After Que the Game Will Not Open Into the Actual Screen You Play On.

I was happy to play a game of league, then when i went to play a game i can hear my team and/or the enemy team sending messages thru chat and i can hear all the sounds in the game. But however i can't play the game, on the tabs on the bottom of my screen, the tab is empty where it should have the logo. Also when i click on it it brings up a black screen, and when i close the tab i try and reconnect and it says my internet connections is messed up and i have switched to my other internet with wifi and also with my internet with my ethernet. Now that that message has gone away I STILL can't play a game, i hope i don't get some ban from this. Hope this gets fixed if anyone else has the same problems even after they re-install.