Black Screen / Game not in match history?

I got into an ARAM match about an hour ago, it black screened while I was in the loading screen right after champ select. I exited the program and checked my firewall, then opened the match again and connected. It worked fine the second time.

Then a few moments ago a joined another ARAM match in hopes the problem would be solved, unfortunately the same thing happened again, but this time after exiting the game and trying to reconnect, the game had ended and is not in my match history. (not as a leave or as a remake, even)

Not sure if there's something I'm missing. I really don't wanna have to re-install the client, as it takes hours to install due to my internet. (dang Hawaiian Telcom) This all started right after the patch with the new MF skin. My firewall has been asking me to allow things for LoL, and of course, I allow it. But it seems to only have been acting weird after the newest patch, and as far as I'm aware everything is allowed for League in my firewall.

EDIT:: It's in my match history now. For some reason it took a long while to update EDIT2:: Looks like the match actually kept going without me. Says it was about 10 mins long. Also says "DEFEAT", not "LEAVE". I'm extremely confused, I was unable to re join the match. It disconnected me and wouldn't let me rejoin apparently?