Game crashing in loading screen

When i start a game i see the borders for about 5-10 seconds and it crashes and tells me that League of Legends has unexpectedly quit. No matter how many times i press reconnect it still happens. I even restarted my computer. Here is the crash report... idk if this helps.

It's ridiculous that this is happening. It has never happened before.

my link isn't showing up I dont know why either... http://pastebin.com/aQQk8hf8