Windows 7: Windows 7 64 bit HDMI Audio Problem

I have just built an i5 rig and can't get the audio to work over the HDMI, I have seen many posts but none of the solutions seem to work for me.

I have:

1) Realtek ALC888 onboard audio - R240 drivers.
2) A 9600GT with DVI to HDMI adapter - 195.62 drivers. (Tried the 181 drivers as well)
3) Patch lead from SPDIF out socket on the motherboard to the 9600GT card
4) Motherboard is a Gigabyte P55-US3L

If I select "Realtek digital output" in playback devices the level bars are moving as they should but obviously there is no audio from the monitor. I have seen a few posts mentioning an ATI HDMI Audo device, is there an NVIDIA equivalent? If so I haven't got one and can find no reference to HDMI audio.

In the NVIDIA control panel it shows my monitor as audio enabled but I can find no other settings to do with HDMI audio. I have plugged a bluray player into the monitor and the sound is fine so that discounts a faulty new monitor. Any ideas peeps........

If you have S/PDIF as one of the outputs, what happens if you select S/PDIF as the "playback device" in the Sounds Panel?

I have ony got 2 playback devices.

1) "Speakers" - This works fine.

2) "Realtek Digital Audio" - The green level indicators flicker but no output.

Cheers
Mark

In the Playback panel, RIGHT click in an empty area and there should be two options, (1) to show disabled devices and (2) to show disconnected devices. If these are not checked, click the box(s) to show these devices in case the device you need is not shown.

Both options are ticked. I have unticked them and reticked them incase it needed refreshing but no joy.

Cheers

Quick question for you,

Did the adapter come with the card or did you buy it separately? If purchased separately and just a regular DVI-HDMI addapter that would be why you aren't getting any sound over HDMI.

Great guide on hooking and setting up here,

Guide: 8800GT/9800GT/9800GTX Sound over HDMI (Now including Creative cards) - Overclock.net - Overclocking.net

Hi Stormy13, yes it is the adapter that came with the card.

I have dug out an old Sound Blaster Audigy 2 card and that gives the same results. Speakers work from the back but nothing from the HDMI port.

I think it may be time to change this old 9600GT .......

Have you tried playing with the pass-through setting here,

http://forums.tweaktown.com/attachme...k-manger-2.jpg

Another question (may sound stupid), have you tried reversing how the connector is plugged onto the motherboard (2-1 instead of 1-2)?

No one said it did. And if you really want to get technical, there is no Nvidia card with audio capabilities. What most of them have (including the OP's 9600 GT) is a SPDIF header on them that when connected to the SPDIF out header on a sound card, allows the card to pass-through audio over HDMI, of which most of the cards need to use the DVI-HDMI adapter that came with the card to work (a standard DVI-HDMI adapter won't work) as most of them don't have a HDMI port on them.

Mark and Cath one thing I do remember seeing is that there was a driver release or two from Nvidia that somehow managed to break the audio out on those cards. Don't remember which driver(s) it was but have a look around over here,

NVIDIA Forums

pretty sure that is one of the forums I saw it mentioned on.

Hold the phones !

Right then I have found the issue. There is a file hidden in the installer folder called "hdaudio_1.00.00.63_xp_vista_win7.exe", problem is it fails to run on 64 Bit windows 7 but this is clearly the key to the issue.

When I get it or another version to run I will report back.

Cheers for now.......