How to solve the problem of no sound from an HDMI external display

7inch Van/Caravan Monitor With HDMI is your good choice.The solution to this problem is simple, not that complicated. The reason why there is no sound after using the HDMI interface to connect to the monitor is that the HDMI interface is an interface that contains audio + video signals. When the computer’s HDMI interface is used, the system will output audio signals from the HDMI device by default. At this time, if the HDMI device has no sound playback function (for example, this author’s HDMI LCD monitor without speakers), the computer will not Sound!
1. The reason why there is no sound after using the HDMI interface to connect to the monitor is that the HDMI interface is an interface that contains audio + video signals. When the computer’s HDMI interface is used, the system will output audio signals from the HDMI device by default. At this time, if the HDMI device has no sound playback function (for example, this author’s HDMI LCD monitor without speakers), the computer will not Sound!
2. The solution is actually very simple, not as complicated as some online sayings that require an external conversion line. After all, this is the category of software problems, and solving computer failures is also based on the principle of soft first and then hard.
3. Later, after consulting, it was found that there were two devices under the "Sound, Video and Game Controller" column in the Device Manager, namely "AMD High Definition Audio". Intel or Nvidia, etc.) and "High Definition Audio
4. We only need to disable the AMD High Definition Audio (the front of your computer may not be AMD, this will be different depending on the display chip provided for your computer), and then the computer can be connected to the HDMI display. There is no sound problem afterwards.
5. If you are not sure which one it is or is different from what the author described, you can disable the test one by one and use the elimination method to finally solve the problem.
6. Disable method: Right-click on the device and select "Disable". The operation is shown in the figure below. Now the author's subwoofer speakers will not be wasted in vain. 7inch Van/Caravan Monitor With HDMI is your good choice.