Laptop with HDMI and no sound

Connected your laptop to your external TV and the sound doesn't go through? Sometimes when you connect your laptop to an external TV using HDMI the video shows up and there is no sound. Many configurations on laptops pass the sound automatically to the HDMI cable. If there is no sound , just make sure the your sound card properties is correctly configured to send the sound through your HDMI cable.

Here is an example of the sound card properties.