Image but no sound when connecting PC and TV through HDMI
What to check
If the sound comes out from PC speakers rather than the TV, you may need to configure within Windows Control Panel.
1.Select Sounds at Windows Control Panel.
2.Select LG TV among playback devices and right-click to set as basic device.
3.If LG TV can’t be found in the list, you will need to enquire to the PC manufacturing company regarding driver installation.