League crashing as it loads into the game

Basically, whenever champ select is over, when the game SHOULD be going to the load screen, instead th egame crashes and creates a crash dump file. I dunno how to copy the crash file onto here so if you need me to do that lemme know HOW to do that. But essentially, I literally cannot actually play, and I've had at least 2 leaver games as a result now. Need help.