Nice one. Gotta do whatcha gotta do. I would remove the driver in the control panel and then the audio device in the device manager. Better yet, get him some headphones.
I tryed with almost everything... and yes i tryed with headphones... he was like " i dont like your (logitech precision gaming) headphones, my ears hurts, or he put them on for 30 minutes, and then the same stuff... and i cant argue forever... i'll eventually change my room also... btw i have to study math, and programming so its really hard to do that with some loud music in your room (that i dont like