Error While opening game window

hi, idk where to report this, but im constantly having this problem, I log in fine to the LoL launcher but as the match is starting and its opening the game window, the screen is black and after awhile I get an error of failing to connect and it gives me optio or "Retry" and "Cancel", retry doesn't work and when I cancel and click "Reconnect" from launcher , the same thing gives me the error again. I got 5 match ban (20 minutes each) about 5(5x5 matches penalty) times in a row just coz of not being able to go into game. idk what to do, my net is perfectly fine and im so sick of getting these errors. im constantly getting 5 matches penalties, I hope I don't get a ban coz of this.. HELP! RIOT!
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