Windows 10: Laptop to Denon avr

I have a older toshiba laptop sattilite L670 running windows 10. Connected using hdmi. I am only getting stereo into the denon. When I go to the sound settings and specify 7.1 and ping the 8 speakers I only get sound coming from the l/r speakers in my system. Does this indicate that the Intel hd graphics card is only stereo capable? I've updated drivers for graphics card and soundcard. This is a refurbished laptop that originally ran win 7 now with win 10/64bit. Could win 10 drivers be the issue? Or as mentioned the card only does stereo?

Regards

:)

 

Dolby Atmos issue on Denon AVR 2600H with Windows 10

Hello,when i use Dolby Atmos games on my windows 10 PC the Denon AVR show "multi in" instead "Dolby Atmos".the strange thing is that when i play Dolby Atmos example videos included in Dolby Access App, the Denon AVR show "Dolby Atmos".Again if i play Dolby
Atmos content in Apple TV 4k or in 4k blu ray player Denon show "Dolby Atmos" as expected.

So the problem seems to be in Dolby Atmos with Windows 10 PC.Anyone have a fix for this issue?

 

Windows 10 Creators Update - after update Cast media to device doesn't work with Denon receiver

Ty for the response.

I did all the steps listed above and I'm still in the same spot -

The result of the DISM scan was: Windows Resource Protection did not find any integrity violations.

Just to short cut some of the other things you might suggest,

• I deleted and re -added the Denon AVR-X3000 in the Bluetooth and other Devices pane -
• I also went to the Device manager and checked the Denon AVR-X3000 for updated drivers and they were the most current version.
• I also went to another Windows 10 machine that was not updated to the Creators version on the same internal home network and was able to Successfully discover and Cast media to my Denon AVR-X3000 (more specifically I opened YouTube.com selected a video
  in the Edge Browser and was able to Cast media to the Denon AVR-X3000 where it played normally - I did the same the audio only sound stream previously linked).

I believe this shows that the Denon is operating properly and the problem rests with some setting in Windows that for some reason is blocking the use of the Denon as a cast to device or blocking Cast in general? Perhaps it's due to Miracast not supporting
it? For example... does Miracast only support Video devices like TV sets and not pure audio receivers? Do you have any way of asking around to figure this out?

 

can windows 10 laptop hdmi to device(denon avr amplifier) hdmi be used as a device monitor in lieu of a tv? want to access the setting on the amplifier.

Can Windows 10 laptop hdmi to device(denon avr amplifier) avr hdmi be used as a device monitor in lieu of a tv? want to access the setting, etc on the amplifier. thanks for any help.