I have a double monitor setup in Windows 10 Pro. An AOC monitor (DP) and an HP E243m (HDMI).
I've always had 4 output options: monitor AOC, two options for monitor HP (all NVIDIA) and headset (Realtek (R) Audio).
Previously, my output option was "HP E243m Echo Cancellation (NVIDIA High Definition Audio)". For this specific monitor, I've always had two output options on the Windows 10 output device selection. I've had that one that I mentioned and one without the "Echo Cancellation" part. Only the "Echo Cancellation" option would output sound.
Recentely, this "HP E243m Echo Cancellation (NVIDIA High Definition Audio)" was simply gone. I have no idea why. I still have the other output option for this monitor, "HP E243m (NVIDIA High Definition Audio)", but this option, like stated before, produces no sound.
On the sound control panel, the option is also gone.
Here is what I've tried:
- Re-install Geforce Drivers
- Device Manager -> Update all sound and NVIDIA related drivers
- Rebooted (several times)
- Device Manager -> Scan for hardwre changes
- Disconnect and reconnect the monitor's HDMI cable
- Turn the monitor OFF and ON again
Update of what I've tried:
- Swaped the HDMI cable and rebooted. Same result. Only one output option.
- Tried using the other HDMI port of the graphics card
Update of what I've found:
- Can't upgrade the firmware. Tried with 3 different HDMI cables and get the error mesage: "HP E243m Monitor device not found".
Please, tell me if you've experienced this issue before and what you've done to fix it, or sugest a possible solution, please. Thanks in advance.
[!!UPDATE!!]
So a few months have passed and... somehow someway the output options are back.
I did not installed or uninstalled anything in the mean time. Firmware update does work now. I have no clue what caused the problem and what cause the respective solution. It's worth to state that it's not 100% working, because before this happened, the two sound output options used to play the sound a bit diferentely, and now it's the same. If anyone has any clues on this, please share. Thanks.