How are you connected to the display from your display adapter? If HDMI, you should have that set as your default audio output device.
Hello,we have 2 Acer G276HL Kbix Monitors actually which is connected to 2 different pc running Windows 10 and 7, already connected to HDMI and set as default audio both doesn't have any sound. If we plugged an earphone to the monitor there is a sound.