No Sound is coming From the game

I can't seem to get this game to produce any sound all the method that people have given me to try and resolve the problem have fail. I try updating my speakers, I've login and out many times to try get the volume to come on and yet there has been no sound coming from the game. And NO my game is not Muted i play with over 80% volume and with my computer speakers at 30% volume yet when i try to start this game i can't get one sound from it. yet just a month before i had perfect sound what could have change to prevent me from getting sound from this game. We would all benefit in knowing how to fix this issue so that we can enjoy this game as a whole. the game doesn't even recongize my headphones while my computer does.