Graphic Fail League of Legends

Suddenly my League of Legends was bugging and almost all thing was gray and i could not see anything
if this happens for you:
step 1.
Uninstall League of legends
Step 2
Restart you computer
Step 3
Install league of legends again
It Work't for me:)  

Playing caitlyn like a boss in aram nice build

i am playing Catilyn like a boss in Aram, i use a really nice build you can tried if you want.