Update: just tonight when I first switched my PC on, I have actually seen the Intel Audio device as available! I was hoping the problem sorted itself out, so I didn't take a screenshot, however during the PC usage, the screen started flickering when I had the Device Manager on, so I rebooted the computer, but ever since then it was also missing!
Needless to say, I had downloaded and installed and removed various versions of Intel drivers, but no luck. Every single driver actually says that it will now install two drivers - one for graphics, one for audio, but after it finishes, the audio device is nowhere to be found! Countless reboots later, the problem is still there
Does the issue persists with the following version Download Intel® Beta Graphics Driver for Windows® 7/8.1/10* [15.40]?
Have you tried installing the driver with the following method Desktop graphics drivers — How to Manually Install a Driver in Microsoft Windows 8* or Windows 8.1*?
Hi Amy, thanks for trying to help. Yes, I tried those beta drivers as well. I am wary of beta drivers, but I can see that they are for Win 10 build 10586, so for Windows updates of last week that I installed. In fact, I left those drivers on after I wrote the original post.
The issue persists, I'm afraid. But what is really bizarre is that it keeps coming on going, after shutdowns and reboots, seemingly without a pattern. I have changed nothing in the driver configuration or HDMI cable being plugged in/out for a couple of days, and just since this morning:
1. The audio device was showing:
2. After a reboot or two this morning, the audio device was gone
3. After a reboot or shutdown, it is showing again, and I can select and use it, it transfers the audio to the TV:
I cannot find any pattern. It is not on every other reboot/shutdown, it seems completely random. It is highly, highly irritating. It's not as much a question of trying to install the drivers manually for the device, it is quite simply that
the device is simply not show anywhere on the Device Manager - not under Sound controllers, or as "other unknown devices", it completely disappears and turns up again.
It's unfortunate that you're facing this issue, since the latest driver did not work for you I would recommend to wait until there is new driver release. You can also check with your computer manufacturer in order to see if they can provide a customized driver for your system.
I've had a similiar problem. Bought Z170 Asrock mainboard and tried to connect my TV and second monitor to 530 iGPU besides main monitor connected to my discrete NVIDIA card. Tried messing with couple of windows extended desktop options, no success.
Finally, after changing bios setting with iGPU being main card (from PCIEX, NVIDIA still catched every BIOS screen) Intel HDMI Audio finally showed up in windows device pool.
I can finally choose my TV as audio target besides video target.
I hope it helps.