Loading Screen Error

Hey all,

Just of today, joining a regular game, everything was pretty normal until we got to the champion loading screen.

For some strange reason, the loading percentages stopped for everyone. I was at 100%, and so were two other people. The Zed that was on our team was at 68%, and not moving at all, and the last person didn't even load in. So I waited, for about 15 minutes, and then I turned off my computer and restarted LOL. I was asked to reconnect normally, and everything seemed fine until I got to the loading screen AGAIN. Instead of seeing anything, all there was was just a black screen. I couldn't quit league or do anything at all until I restarted my laptop. I don't think its my laptop thats not working, as everything else was fine. Except when I got to the loading screen.

Any help would be appreciated.

Thanks

I PLAY ON A MACBOOK FYI