Desktops & All-In-Ones: No Audio from the Display When it is Connected to a Windows 8 computer using a High-Definition Multimedia Interface (HDMI) Cable Connection | Dell US
Solved] Dell Audio Not Working - Quickly & Easily - Driver Easy
Cannot play 5.1 surround sound over HDMI - Dell Community
Solved: Inspiron 24-3459 AIO to HDTV? - Dell Community