Gameplay and loading screen bug

When i start a game and finishing the loading screen sometimes i can't see my self or my allies or enemies or minions and then i tried to reconnect ,but i have found my self stuck in loading screen with 6% and same ping like 123 without changing,so i cant connect and play with my team and boom i got chat ban for afk what is my bad in that? i know that i am making a disadvantage for my team and leading them for the lose but ... what should i do
PLEASE HELP!!! sorry for my bad english