I have another no sound fix that might help some.
Last week a tech replaced a motherboard in my firends PC and all worked fine..except no sound and the tech did replace the new sound drivers required for that board.
What I found is that the sound was turned off in the BIOS for that Board and changing that corrected the problem.
Besides no sound the other indication to me that the audio on the board was not available was..
If you go into control panel>sounds and
audio devices and open up you would find
the volume, audio, and voice tabs are all greyed out.*************************************
Troubleshooting Sound Issues1. My sound card doesn't make any sound and I show no conflicts.
2. I can hear WAV files and games just fine, but CD-audio can't be heard.
3. I upgraded to Windows 2000 and my sound card doesn't work right.
4. I have a 4-speaker sound card but can't get any more than 2 speakers working.
5. There is only sound coming from one speaker.
6. General Sound Troubleshooting
7. Half of audio volume is missing
8. I have no sound in Vista after applying an update
http://www.5starsupport.com/faq/sound.htmReset the default BIOS settings:You can try resetting the sound default in the BIOS. Here's how:
Note: For most PC's entering the BIOS will be the same. If the instructions below do not work for your system, consult your operating manual for instructions on entering the BIOS.
Turn the PC on. When the Windows logo first appears, press the F1 key repeatedly until you see the BIOS setup screen appear.
Press the F5 key.
Select Yes or OK, then press the Enter key on your keyboard.
Press the F10 key, then select Yes or OK to save the default settings. Press Enter.
Exit the BIOS and restart your system checking for sound.