[SOLUTION][CRASH] Anyone that's having the crash error today.
Okay so I was having this issue that I'd successfully login to LoL and the result would end of crashing my PC. I tried reinstalling over and over for hours. After awhile I hit the boards and saw people having the same issue.
The kicker was that most of them mentioned a windows update. Same for me, when I got on I had to update and then I had the crash error.
The solution is simple.
Go to Start > Control Panel > Programs and Features > View installed updates
From here you simply find the most likely to be named "Security" update dated for 7/26/2015.
Afterwards follow through with a restart and once you load back in LoL should work.
This worked for me so if you are having issues I suggest you do this.
Eat. Work. League of Legends. Sleep. Rinse Repeat