That's how my game was stuck for 20 minutes of ranked game.
Sorry for my bad English.
Check the link.
I was in ranked flex game with 2 my friends. I don't know in which minute we got "attempting to reconnect" sign on the screen but something like 25minute of the game. We all used alt+f4 to leave game and come back to game what they done successfully. Only mine client did not working properly and got 2 "system errors". I restarted client twice and restart PC once but this happen again, black screen with error. So I open Task manager and close all league of legends process. Then I logged in back to game successfully but enemies were on push and enemy mid laner nuke me like a small minions. -15lp and lost 43 min of my life.
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