Some Windows users reported that their Realtek HD Audio Manager icon is missing from the taskbar and they can't access the sound control.
How to fix Realtek HD Audio Manager missing from the Windows 10 Taskbar? Realtek HD Audio Manager (Realtek High Definition Audio Manager) is an easy tool to control sound play on Windows 10 desktop or laptop. 6 Ways to Fix Realtek HD Audio Manager Missing from Windows 10 Taskbar