Can't edit so I'll post it here :
Dektop, Windows 10 64bit, uninstalled the AMD and now re-installed the crimson 16.3.2.
BenQ XL2411Z, connected with a VGA cable.
I-7, 8GB of RAM.
First, open your realtek sound manager from the systray and hit the little "wrench" icon and see if the correct output port is selected. Next, check your device manager and open sound devices and if there's another device there besides the realtek, disable it--making sure that the realtek device hasn't been somehow disabled itself. Next, then try removing the realtek device from the device manager (do not uninstall it permanently) and reboot and see if that fixes it. If that doesn't work then try manually uninstalling the sound drivers, then manually reinstalling them. Next, ditto the GPU drivers.