My fix for the black screen at load up.

Okay, so I think pretty much everyone has been experiencing this on occasion with the new patch. The ONLY thing i've been able to do to get back into my game is exit out of league COMPLETELY (to where you have to log back in with username and password). It may take a few tries to actually get logged in but just be patient. When you get back in it should allow you to reconnect to the game and you should be able to load up as normal. You want to do this as soon as you realize you have disconnected or gotten the black screen. Hope this helps people out!