in this tutorial i fix audio sound problem not working after upgrading windows pro 10 for 29 July 2015. Many other users also also facing problem after upgrading windows 10. in this i showed how to fix this error with 2 easy steps. After this i have already fix audio sound problem not working problem.
How to Fix Audio Sound Problem on Windows 10 with 2 Easy Methods
First Go to Notification Area → Right Click sound Icon → open Playback devices → Select your Speaker icon as default playback device. I have already select all these settings.
After default playback device Navigate to Properties → click on advanced → enhancement → check disable all enhancement
Reboot the system. After reboot I hope you problem will solved.