Game Crashing before even Opening

I'm trying to enter a match with my friends right now, and I cannot. Immediately after finding a TF match, my client closed like normal, then it immediately popped back up saying "The game has crashed. Please try to reconnect to the game."

I have tried several times, and the exact same thing happens. Client closes, then opens right back up saying it crashed. I do not get a black screen, a League logo, or any other sign that the program is even starting up. I have tried exiting and logging back in with no change. This irritates me, but the worst thing is that my team is now stuck in a permanent 4v5 and may end up blaming me as a leaver troll.