Game Crash (Riot COMMON)

Riot, I m having game crashes since 2 hours ago. The game was fine running good perfect okay, but all of a sudden the game crashes after champion selection to loading screen. Because of this problem, I got fucked in my promo two times and getting lower que shit which gave me 20 mins of penalty. Pop up comes directly during the black screen in between champion selection to loading screen, saying failed to connect: unable to connect to the server. Please check your network: while my network works fine and speedy. Now I m pretty pissed off, remove my error and lower que shit.