No sound in call of duty black ops 2, please HELP!!

gigabyte2020

Distinguished
Apr 14, 2016
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Hey guys,
I have just finished installing COD black ops 2 and the game is working perfect on my specs but the ONLY PROBLEM WHICH IS MAKING ME MAD RIGHT NW IS THERE IS NO SOUND,
http://imgur.com/bGhEHyl (screenshot, u can scan link if u want to be more secured)
As u can see in this screenshot of game folder that I already have the game sound folder but there isn't any sound in the game, everything is muted and I tried to restore defaults in game settings but still no sound, I made searches on youtube and many said I have to setup DirectX 9.0 2010 sth likte that and i did that and still same, I have USB-headphones which here it's link in amazon: https://www.amazon.ca/OVLENG-Q4-USB-Headphones-Mic/dp/B00MXK103Q
and my headphones work fine in any other games,musics,applications, so it's not dead or fried.
Any help please?
Thanks <3