No HDMI Audio in Windows 7

I have been through the threads on this forum regarding Windows 7 HDMI audio problems, but they seem to involve HDMI audio devices that can't be selected. I am connected to an HDTV via HDMI, and HDMI is set as the default audio device in my PC's Sound control panel (Sound CP.jpg, attached). But I am still getting no sound on the HDTV.

I have checked the HDTV's audio setup, and HDMI audio is enabled and set to "HDMI". I have tried installing nVidia drivers, but that simply killed the HDMI audio driver that Windows 7 had installed. Computer is a Shuttle SN68PTG6 (6800 G6).

So, at this point, I am stumped. Any suggestions on how to get HDMI audio working? Thanks for your help.

Edit: Found my answer--reinstall display drivers. See message at end of thread below.

Fill in your system specs. Sometimes there is an option that needs to be enabled in the BIOS. Knowing what motherboard you have and what BIOS version you have is important in knowing where in the BIOS to look or if it is an option.

Also is this a new build or an upgrade from xp/vista?
Was it ever working or is this first time it has been used for HDTV?

If you dont know the motherboard specs, you can use CPU-Z to find out what your system has on it:

CPUID

Here is the CPU-Z report. BTW, I am using mainboard video and audio--no cards. Thanks again for your help!

CPU-Z TXT Report
-------------------------------------------------------------------------
Binaries
-------------------------------------------------------------------------
CPU-Z version 1.54
Processors
-------------------------------------------------------------------------
Number of processors 1
Number of threads 2
APICs
-------------------------------------------------------------------------
Processor 0
-- Core 0
-- Thread 0 0
-- Core 1
-- Thread 0 1
Processors Information
-------------------------------------------------------------------------
Processor 1 ID = 0
Number of cores 2 (max 2)
Number of threads 2 (max 2)
Name AMD Athlon 64 X2 BE-2350
Codename Brisbane
Specification AMD Athlon(tm) X2 Dual Core Processor BE-2350
Package Socket AM2 (940)
CPUID F.B.1
Extended CPUID F.6B
Brand ID 3
Core Stepping BH-G1
Technology 65 nm
Core Speed 2100.3 MHz
Multiplier x FSB 10.5 x 200.0 MHz
HT Link speed 1000.2 MHz
Stock frequency 2100 MHz
Instructions sets MMX (+), 3DNow! (+), SSE, SSE2, SSE3, x86-64, AMD-V
L1 Data cache 2 x 64 KBytes, 2-way set associative, 64-byte line size
L1 Instruction cache 2 x 64 KBytes, 2-way set associative, 64-byte line size
L2 cache 2 x 512 KBytes, 16-way set associative, 64-byte line size
FID/VID Control yes
Max FID 10.5x
Max VID 1.300 V
P-State FID 0x2 - VID 0x12 (5.0x - 1.100 V)
P-State FID 0xA - VID 0x0F (9.0x - 1.175 V)
P-State FID 0xC - VID 0x0D (10.0x - 1.225 V)
P-State FID 0xD - VID 0x0C (10.5x - 1.250 V)
K8 Thermal sensor yes
K8 Revision ID 6.0
Attached device PCI device at bus 0, device 24, function 0
Attached device PCI device at bus 0, device 24, function 1
Attached device PCI device at bus 0, device 24, function 2
Attached device PCI device at bus 0, device 24, function 3

lol thats a lot of info....so first off:

The info here suggests you have this machine correct? Shuttle SN68PTG6 Deluxe Barebone - AM2 With Bluetooth/HDMI/Fingerprint Scanner - Ebuyer
Shuttle Europe: SN68PTG6 Deluxe

This is your motherboard and BIOS:
Motherboard model FN68PT revision V10
DMI BIOS vendor Phoenix Technologies, LTD version 6.00 PG

(I am having trouble finding this motherboard and a BIOS update online....)


This is your Graphics Chip:

Name NVIDIA GeForce 7050 PV / NVIDIA nForce 630a (Microsoft Corporation - WDDM)
Revision A1
Memory size 128 MB
Biostar TF7050-M2 PCSTATS Review - nVIDIA GeForce 7050PV Chipset

(Only link I could find for that as well )

Do you have Win7 32x or 64x?

if you have 32x then this is the newest driver for your nVidia chip:
NVIDIA DRIVERS 15.49 WHQL

If you have 64x then this is the newest driver for your nVidia chip:
NVIDIA DRIVERS 15.49 WHQL

Are these (the latest driver for your chip) The ones you installed? can you see if installing the latest above resolves the issue.

If it doesn't then we might want to look at whether or not there is a BIOS option to enable/disable sound through HDMI.

I've had that problem with my GeForce 9400GT. No fix found for me.

Another thing to consider is that it might be the cable itself. I have heard of HDMI cables that have no sound. Have you used this cable and had sound come through on any other devices?

Also are you having any other sound problems? can you still send sound out to speakers/TV/headphones through the headphone jack?

hey there Fred, I remember your issue but vaguely. I think you ended up using an audio cable out. right?
I haven't seen you on here in a while. good to see you back