I've had this issue for ages and re-installing Windows 10 has not helped. My screen randomly (about every 3-5 minutes) comes out of power save mode and simultaneously the audio pops. The screen immediately goes back into power save mode. It does this continuously.
- I used Snappy Driver Installer to ensure I have the latest drivers installed.
- Tried the freeware "Super Sleep".
- Tried different sleep settings: at the moment, I have it set for monitor to sleep after 15 minutes, computer to never sleep.