Annoying Game [Crash]

League started crashing for me about two weeks ago, i would try to get in a game, usually solo queue, go through champ select just fine, and then the game would crash when it was time to load into the actual game. The loading screen wouldnt even come up, just a plain black screen for a few moments then it would minimize and a message would pop up saying the game has a crashed an an option to reconnect. Reconnecting wouldnt fix it, i have tried reinstalling about 5 times, tried running the game as administrator, ive tried googling suggestions on how to fix this, ive even uninstalled a few updates to my actual computer from around the time the game started crashing to see if it would make League compatible with my PC.

The game works just fine on my boyfriend's laptop. The game used to work just fine for a long time before this. The crashes had only happened once a while back, and uninstalling and then running as administrator fixed it. [(http://imgur.com/a/IzCSV)]