every time i try to enter the game the game crashes after the champion select and this happened to my friends too. Its so annoying i got bans in all my accounts because of this i tried everything : 1-logitech. 2-delete the launcher. 3-** i even downloaded the game from scratch.** nothing worked out please HELP ME!!!! i want to play before my death. (how an international game like league of legends have problems like this).
I have the same problem, all started after last patch. Every time I try to play a game it freezes on champion loading screen, then if you minimize it it crashes.
It takes you back to the launcher like this http://s10.postimg.org/auy295g93/asda.png
Then I have to spam the reconnect button because the game just keeps on crashing looking like this http://s1.postimg.org/5deo7dbct/das.png
After between 10 to 30 tries it will take you do the loading page on your own and then finally connect you when loaded, but by then the game has started and you are often behind. 
same problem as i am panties i was playing just fine before patch. tried re istalling and FIXING option
