High Definition audio only stereo after Win 7 install

Hi All,


This forum is my last hope for solving my problem.


I have HP Pavilion dv7 1270us , which came with Windows Vista x64. I've managed to watch DVD Movies and Blu-ray discs through the HDMI-output, having multichannel audio as well (5.1)


I thought that it was time for a Windows upgrade. 2 weeks ago I've purchased a copy of Windows 7 Professional, formatted my hard drive and installed my new Windows. After that I browsed HP's driver page to download my missing drivers.
Everything looked good, except the fact that I cannot output multichannel audio to my amplifier now.

Firstly, I thought that this could be a codec issue, but it wasn't. This is what I've found in my Sound settings - Windows says that my High Definition audio supports only 2 channels:





As you can see from the screen the HD driver is from Microsoft, which is strange (I think it should be signed by HP?). Somewhere I read that Windows 7 supports only 2 channels for HDMI by default, because the driver is a generic one. When trying to update the driver, the system says that it is the best one.





I've been searching Google for days for a solution. I found that a lot of people are having similar problems (though on different configurations) but I never read a proper solution to this problem.


Please help!

ickata said:

Hi All,


This forum is my last hope for solving my problem.


I have HP Pavilion dv7 1270us , which came with Windows Vista x64. I've managed to watch DVD Movies and Blu-ray discs through the HDMI-output, having multichannel audio as well (5.1)


I thought that it was time for a Windows upgrade. 2 weeks ago I've purchased a copy of Windows 7 Professional, formatted my hard drive and installed my new Windows. After that I browsed HP's driver page to download my missing drivers.
Everything looked good, except the fact that I cannot output multichannel audio to my amplifier now.

Firstly, I thought that this could be a codec issue, but it wasn't. This is what I've found in my Sound settings - Windows says that my High Definition audio supports only 2 channels:





As you can see from the screen the HD driver is from Microsoft, which is strange (I think it should be signed by HP?). Somewhere I read that Windows 7 supports only 2 channels for HDMI by default, because the driver is a generic one. When trying to update the driver, the system says that it is the best one.





I've been searching Google for days for a solution. I found that a lot of people are having similar problems (though on different configurations) but I never read a proper solution to this problem.


Please help!

Whatever driver worked in vista, will work in win 7 in installed in "compatibility mode"

Let us know if you need help

Ken
\

Hi All,

I tried both with latest sound driver for Win 7 and Vista, but got no success.

However, I reinstalled the nVidia graphics driver and guess what - it did the trick! During the installation process I saw that both nVidia Graphic Driver and nVidia HD Audio will be installed. After that I restarted, set some settings and my 5.1 works like a charm now!