The game stop work after we arriving to our base

After i picked my champ and saw all the team mates at the beginning i am arriving to the base. After 3 seconds the game freezes and the pc too (the only way to get out is to shut down the pc) + i cant type any key on the keyboard. I hear strange voices like something is stuck. What can i do to fix that problem? i tried to reinstall the game without success. can u pls answer me mates?