My game crashed during the loading screen and then it wouldn't let me log back in.
This started happening when my friend told me to download a map skin that I immediately removed because of this very problem. But I don't know, anything is possible.
Okay this happened twice already, but I should have taken screen shots, anyway I decided to go ADC (Bottom Lane) in the Draft Queue and when I was in the loading screen, RIGHT when I was about to get into the game the game crashed and the window popped up with "Mad Scientist Ziggs" wanting me to say what happened so it can be sent to riot when I know that it never will do anythng.
So then I tried reconnecting to the game right after it said it crashed, guess what there's a black screen, while the black screen happened I alt-tabbed out, and then back in and it said "you're not connected, try restarting your router," or whatever the hell it said. And then I had no choice but to close the client because that's what it did when I clicked "Okay."
So then I opened League of Legends and what do you know it said that some install went wrong and so then I had to reinstall all the recent patches all over again and when that was finally done 5-6 minutes later, I logged back in. And THEN guess what happened, I went to my match history and one of my games said "Leaver (Remake)" and I basically got a loss for the client being stupid and that it can't not screw up if the loading screen some how don't cooperate with getting into the game.
Sorry that I sound kind of frustrated but this has happened twice already and I don't want to play ranked and the loading screen crashes for no reason and I lose LP because of something that wasn't my fault.
This is the closest thread I found where it's almost identical to my problem, only there were no remakes back then.
http://forums.na.leagueoflegends.com/board/showthread.php?t=2649362