Keith Jenkins
HNC in Engineering & Electronics, James Watt (Graduated 1967)Author has 3.6K answers and 1.8M answer viewsUpdated Feb 8
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HDMI Arc with a sound bar is not working when I connect my PC via HDMI. What should I do?
Is your PC ARC compatible i.e. the HDMI port is marked as ARC ?

For ARC to work both devices need to be ARC compatible.

I have yet to come across a PC with HDMI-ARC.