Windows 7: HDMI sound output works just fine, audio jacks not at all! New PC

Are your drivers up to date.
The DirectX Diagnostic Tool shows the driver dates as...
Realtek 03-09-2010
Nvidia 03-08-2011



Realtek

Drivers - Download NVIDIA Drivers

My friend, you forget Im European!

NVIDIA drivers are from 3rd of august and the Sound drivers I could see are from 30th august 2011. Il copy the DxDiag as a text file here:

-------------
Sound Devices
-------------
Description: Realtek Digital Output (Realtek High Definition Audio)
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_10EC0888&REV_1003
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: RTKVHD64.sys
Driver Version: 6.00.0001.6449 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 8/30/2011 17:28:46, 3069032 bytes
Other Files:
Driver Provider: Realtek Semiconductor Corp.
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No

---------------
Display Devices
---------------
Card name: NVIDIA GeForce GTX 570
Manufacturer: NVIDIA
Chip type: GeForce GTX 570
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_1086&SUBSYS_15713842&REV_A1
Display Memory: 4059 MB
Dedicated Memory: 1248 MB
Shared Memory: 2811 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor Name: Generic PnP Monitor
Monitor Model: DELL 2007WFP
Monitor Id: DELA019
Native Mode: 1680 x 1050(p) (59.883Hz)
Output Type: DVI
Driver Name: nvd3dumx.dll,nvwgf2umx.dll,nvwgf2umx.dll,nvd3dum,nvwgf2um,nvwgf2um
Driver File Version: 8.17.0012.8026 (English)
Driver Version: 8.17.12.8026
DDI Version: 11
Driver Model: WDDM 1.1
Driver Attributes: Final Retail
Driver Date/Size: 8/3/2011 07:50:00, 15064168 bytes

As you can see they are both from august this year

Im pretty sure its the graphic cards audio drivers, related to HDMI use that somehow have impaired the mobo sound drivers. My question now is really how to make the mobo drivers override the graphic card ones?

Ive tried removing the NVIDIA sound drivers and the related Audio services which use the same bus as the graphic card - thought that would "block" them. I just played Elder Scrolls IV: Oblivion on my tv-monitor and the sound worked perfectly, but the ability to simply play the sound trough speakers still are not available to me. Ive droned around the web, and it seems a rather common problem, at least not very rare.

surely there must be some way to fix this?

Thanks again for your time!

This gentleman have the same problem as I: Graphics Card Upgrade

On bottom of second page. Now, I have on-board audio as enabled with my BIOS - (the auto function is not available to me, only enable/disable) what can I possibly do??

I would disconnect the front panel connection to the motherboard. It may be defective.
After disconnecting it, unplug your back panel speaker connection. Plug it back in and see if you
get the Realtek jack detection pop-up. If you do, see if the Speaker says "working".

Its 4:35 AM here in Norway now, have flipped my day-rhytm 2 days in a row now to fix this, Im just going to to reinstall the video-card and realtek drivers and drop of the faulty piece of annoyanc (aka computer) off at a repair shop as you are probably right, it seems to be a fine combination of the: as some guy said at another forum: "I think the graphics card has somehow confused the PC into thinking it had another sound card installed."

And some form of mechanical issue.

In a last ditch attempt I uninstalled anything NVIDIA, together with all audio drivers and teared the video card out of the machine to no use - the sound didnt return.

Someone came up with the idea that the graphic card were to power draining so that power to sound were cut but:
Though, as I mentioned earlier there was still static noise in the jack when volume slider and volume knob on speakers were turned all the way up - and i have a good 500W PSU, so I have plenty of power supply.

Thanks for your time. Best regards, Lars

Hi Lars (I guess this is your first name...)
Believe it or not, I have suddenly the same problem after my power supply had to be replaced. And I also have a Shuttle with a graphic card.
If by any chance you come across this thread (long time passed since you posted yours) -please let me know if the issue was fixed.