Black Screen After Game Start

My whole game turns into a black screen after champ select (in loading) I'm a Mac user so I'm unable to force quit the program, only option is to restart my laptop. I did this multiple times last night so I could try and get back into the game but it didn't work. I thought it was just my laptop being dumb so I just turned it off for the night hoping it would be better in the morning. Come morning I attempt a game again and it does the same thing. So I looked it up and saw people post about the same issue in the past but no actual solution was given in any of those threads so I do not know what became of that. RIP Solutions?