[CRASH] I don't quite know what's going on/why this is happening

I logged on to my computer to find this when I tried opening league of legends: http://gyazo.com/f549a7790eecf4dc06b8aea85a95d495

I would suppose it's because of my Window's update, but I don't know how to fix it, plus I've already tried uninstalling and reinstalling. Thank you. :)