Game keeps crashing after champ select

So recently I've I've tried playing some games and I've had a sever problem starting the game. I would go through all of the champ select steps and the game would try to start. However before I can get to the loading screen, the game would crash and I can't get into the game. I think this problem started occurring right after the talyah update and I haven't been able to play a game ever since. An error also pops saying "The instruction at 0x000000000166B8E2 reference memory at 0x0000000001A2A644. The memory could not be written." Pls help me fix this problem ASAP.