Intel HD Graphics 4000 Dual Display and sound problem

[MMyll]

Hi,

I have a big problem with my system and this has been working ok before. Please check the pictures firt attached where can be found information about my hardware (Windows 7 Pro x64).

Now here is how my hardware is connected and what happens:

1) Acer AL1914 is connected to motherboards VGA-port.

2) HDMI cable is connected to motherboards HDMI port and to amplifier Yamaha RX-V667 HDMI input 2.

3) Yamaha RX-V667 HDMI-output is connected to Panasonic AX200 projector.

When I start up my system so when windows is loading I can see picture in both displays. As long as my HDMI-cable is connected to my PC everything works as it should:

I get the picture to both displays, I can use clone or extended desktop or just single ones. Also my amplifier is getting sound via HDMI as it should.

Now if I shut down my projector:

- There is no signal anymore for my Acer

- There is no sound signal for my amplifier

Even if I reboot the system: nothing changes.

If I then unplug HDMI-connector I get the picture back to Acer but of course no sound to amplifier (because it uses signal from my HDMI-cable).

What I have figured out is the problem with the sound:

Windows assumes that the sound is played by AX-200. It is not reconazing my RX-V667 at all. So when I power of AX-200 It don´t regonize my amplifier and there can be no sound.

Now if I unistall my Intel Display driver I can get the sound to my amplifier and a picture to my Acer. So the problem in both cases is with Intels driver?

I did also unistall my Realtek sound driver. It did not change the situation.

Please help me out, thank you in advance!

[Amy_C_Intel]

Hello mamyllyn,

We have seem some issues related with the HDMI display and audio, so in this case what I would recommend is to install the driver that appears on the following link https://downloadcenter.intel.com/downloads/eula/24955/Test-Driver-HDMI-Display-Detection?httpDown=https://downloadmirror.intel.com/24955/a08/15.28.64bit_test.zip Intel® Download Center. It needs be installed by extracting the zip file and running the setup.exe file or by using the manual installation(through the Device Manager) method to install.

Let me know your findings.

Regards,

Amy.

[MMyll]

Hello,

Thank You for the reply.

I had time so I did install Windows 10 as a "fresh" version to my pc.

Now it seems that everything is working and the driver regonizes my Amplifier as it should.