Game freezes instantly after loading in

This didn't happen last night when I played. But tonight while trying to play ranked, I when I load into the game, the client freezes instantly as the characters start to load in. This causes me to have to close the game and reconnect. By the time I'm reconnected, it' already almost 2 minutes in game and I risk falling behind. This has not only caused me that risk, but the first game it happened, my team told me to disconnect again because our jungler died to an invade. This then caused him to rage at me, and my team to grief me. I also believe that the same thing might have happened to the enemy Renekton in my next game, as it resulted in a remake.

Nothing has changed with my computer between last night and today. I don't know if anyone else is having this problem, but it's causing me serious problems.