same thing happened to a friend of mine and i, separate times. but we say ready for a queue in ranked, then the champ select screen is completely black, you can still see the client window, and hear sometimes, but completely black. i couldnt see chat or choose a champ. lost ip because i had to dodge plus got timer. same thing with my friend. also, i dont know if its this one or another one, but i had one champ select where i didnt see any champs at all that were picked. they were all black squares. i could see who was banned, and chat, and i could choose a champ, but i didnt know who picked what champs so i had to ash in chat. really odd.