No sound at all on my HDMI 8510w

Hello

I have a HP Compaq 8510w with SKU number, KE187EA #ABN, who has a card of nVidia Quadro FX 570 M (with HDMI output) graphics.

I use HDMI for a long time to see the video on my TV, but there the HDMI output only broadcasts the video and no sound at all, so far I had to connect to the audio jack of my soundsystem separately, that works, but it is annoying as the HDMI output is supposed to audio output as well.

I'm running Win7 64 bit with the latest nVidia drivers for the nVidia Web site downloaded FX 570 M. I also have the latest drivers for the audio chipset (ADI AD1981HD) downloaded with the HP SoftPaq Downloader.

I've read other places online when I connect the HDMI cable, I should get an alternative to select RealTek HDMI output in playback devices options (see [1] and [2] for source). However, this never shows, no matter what I try.

I get two choices are (see screenshot http://i.imgur.com/ayysDeQ.jpg)

(1) speakers - SoundMAX Integrated Digital HD Audio

(2) audio digital (S/PDIF) - SoundMAX Integrated Digital HD Audio

(Yes, I tried pressing the S/PDIF device and set it as the default device - turn off also the other entry and so on).

Also, I find no link between RealTek and laptop computer when searching online, so I don't know if this information applies to my specific device. (I see the repair there is a 8510w with an ATI graphics card as well - so maybe procedure for these devices?).

However, because the audio should go through the graphics card, I guess I should have an entry for the nVidia HD Audio driver (which is supplied with the graphics card driver) under sound, video and game controllers in the Device Manager in Windows. However, here I have only one entry which is SoundMAX Integrated Digital HD Audio one. Is this correct?

Advice on how I can solve this problem?

[1] http://h20566.www2.hp.com/portal/site/hpsc/template.PAGE/public/psi/mostViewedDisplay/?sp4ts.oid=336...
[2] http://www.ehow.com/how_8420288_do-enable-hdmi-8510w.html

Don't know really what I did, but after N attempts at disabling, enabling, backward, the sound suddenly appeared. Too bad I don't know which of the things that I did that was actually the case, but at least problem solved for now.

Tags: Notebooks

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