İ can't hear anything in OverWatch

Hi, yesterday i was playing Overwatch without problems, but now i cant hear anything in the game. I’ve tried update the drivers but it didn’t work. And wwhen i was in game it is lagging, pausing . İ don’t have connection problems either.
What can i do?

Good afternoon T46,

Please follow the steps of our Troubleshooting Sound Issues support article and let us know how you got on.