Ranked game CRASHED. Unable to reconnect. Game nowhere found in match history.

I was playing an (epic) game as thresh in ranked mode, when all of the sudden the game crashed. We were about to ace the enemy team and get the first inhibitor (and perhaps finish the game). Now, after it crashed i tried reconnecting but it only showed black screen every time. So this is where i just restarted the client, as aparantly no1 in my friend list had any issues. When the game had launched, i couldn't find any 'reconnect' buttons. I thought perhaps the game had ended, but nothing was found in match history. I would like to know what is going on.. Greetings.