You may experience a situation where the HD Audio Controller was disabled in the Device Manager after re-installing the AMD Radeon Graphics Driver manually in the Windows 10 Operating System (OS).
Windows requires additional time to complete the installation, the issue may appear if you clicked on the Restart button immediately after the installation of the AMD driver.
To resolve this:
You will have to uninstall the driver and re-install the driver again. However, this time leave the system in idle for at least 3 minutes, or select Restart Later in order for OS to complete the task in the background.