I recently bought an HDMI cable and when I hooked it up there was a picture but no sound. I googled the problem and several sources tell me to right-click on the speaker icon and go into the sound box. Once opened, they tell you to click on the "Playback' tab and select the HDMI option. However, when I get to this point in the sound box, there is no option for HDMI. I also tried right-clicking in the list box and checking the show hidden devices box. Nothing. The only option is for the built-in speakers. I've also tried going into the device manager, but there was still no option for HDMI. I'm running Windows 10 Pro on a HP 15 f039wm (I think that's the model number).