I never had this problem when I was using Windows 8.1. This problem mostly occurs when I'm playing a game (Dota 2, Battlefield 4, Fallout 3, etc) and sometimes when I was just browsing the web, watching youtube videos. The sound will just disappear, although the program just works normally (kinda like the speaker got unplugged). When this happens, I can't left click the audio icon (but right clicking it works) and the start and search menu don't work too. When I tried to test the sound it will show an error, can't play or something like that.

I've googled and tried many solutions, and many are basically reinstalling driver. The problem goes away after restarting my laptop, but the problem will just occur again sometime. This is extremely annoying as I play online a lot.

I'm using ASUS PU451LD and it uses Conexant SmartAudio driver. My OS is Windows 10 Pro 64bit.