How to enable sound via hdmi to my TV ?

Sep 14, 2018
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Sorry I am new to all this stuff so bear with me a moment please.
I have a sony smart TV and a sony sound bar , I use them all the time with no problem and I also connect them to my PS4 and no problem as well. However , I connected my pc to my tv via hmdi and there is no sound whatsoever, am I missing something ?
 
Sep 14, 2018
3
0
10


My current default device is Realtec digital output, other devices are stated as not plugged in and I have show all devices ON.