League Client BuG

I got placed into lower queue because of "afk". First I try to play a one for all game and i get a BUGSPLAT and I can no longer reconnect. After I click reconnect it stays at a black screen. Then I repair LOL and I join a bots game to see if its fix. Nope. I still get the black screen. Fix these please and I know its just lower queue for 5 games but it STAYS record on my account and I don't want that. Because of these bug that doesnt allow me to enter the game but the game is still going I got an afk warning. remove it please. The youtube video is proof. Thank you