Windows 10: HDMI Adapter No Longer Working

I have this HDMI Dual Adapter which allows me to plug in 2 extra monitors since my computer only has one HDMI port, it was working just fine up until earlier this week when my computer could no longer detect the additional 2 monitors. I've tried updating my drivers, checking all my cords, and even bought a new HDMI dual adapter but even after all this my computer still won't detect the two additional monitors and I'm out of ideas.

:)

 

USB-c to hdmi adapter doesn’t work

It should if you have USB-C, but even then these adapters are not that reliable - nowhere near as good as using an HDMI or Display Port cable.

Did you try the troubleshooting steps I gave you? This will let you know if it can be made to work and remain stable.

This is an interactive process. I give steps to perform, you do each one and then report back results until something works, so I know what to suggest next. If you need help performing any step, just ask back. But please do not skip any steps. We often find out the skipped step is the fix.

 

USB C to HDMI/VGA adapter no longer working

1. What are the hardware specifications of the current USB-C to HDMI/VGA adapter? If it is convenient, please try to share the hardware information, including the speed of the cable and the specifications that the adapter itself can support. COMSOL CMHV02
   
2. Given that you have already tried to replace multiple USB-Cs, this may not be a problem with Firmware and Intel(R) UHD Graphics drivers. You can try to unplug these USB-C to HDMI/VGA adapters on other computers and observe whether the video output signal is good. I don't have another computer to try it on but this was working, as I used it for work then I took time off and it's now no longer working. so I purchased new ones because I thought it was due to an old one and none are working. so it's the slot, not the adapters.
   
3. At the same time, please check the usage of your USB-C output port. If you use a USB-C that does not have a video output, it may cause problems. Please refer to the ASUS official description of the USBC of the device: [Notebook] How to determine the function of USB Type-C ? | Official Support | ASUS Global This originally worked so this can't be the case.
   
4. In the meantime, try connecting an external monitor via the HDMI port on the device itself and see if the output is good. the monitor is fine - no issues with the monitor.
   

As this was previously working I believe it was due to some type of update. how do I go about rectifying this? I called ASUS and they told me they cant help me. lol

 

Hdmi sound not working

Hi Peter,

One possible reason why the HDMI sound does not work is due to the conflicts with the playback settings. For us to help you make the HDMI sound to work, we suggest that you answer the following questions for further research:

• Have you made any recent changes to your computer?
• What is the current build and version of your Windows 10?
• Have you tried to download and install the most updated sound and display driver of your computer?

Meanwhile, we suggest that you perform the steps on this
article as our initial troubleshooting and see if there will be any changes on the HDMI sound.

We'll be waiting for your response.