Help, i''ve just about given up hope...
Sound was WORKING on vista a few hours ago... but now it suddenly stopped as I unplugged my computer to move it to a different part of the room.
Vista does not detect my speakers even though they are plugged into the right spot. However the Digital Output I see from the sound playback is animated when I play music in the media player.
I'm facing exactly the same problem. I only just finished formating my computer, but even that did not change anything.
Although I have checked & rechecked that I have correctly connected the three (green, black & orange) jacks on the card, the "Sound" menu in Control Panel indicates that headphones are connected to the green jack but speakers are NOT connected. There is NO sound whatsoever! I fail to understand how the same 5.1 speakers were running perfectly fine before I moved my computer.
Now here I am, eagerly awaiting some whiz to tell me what I've not done or what I've done wrongly!
Any help appreciated... Thanks!
This issue seems related to the joining of a domain or workgroup. I just joined a workgroup with my laptop and after the second restart (standard Group Policy refresh), I didn't have any sound. Unfortunately, I don't have, nor could I find, a resolution to this issue. The only thing that worked for me was to do a system restore. If you restore it back to the time prior to joining the domain, you should find that that works. It's definately an issue that needs to be resolved and hopefully somebody in Product Support could address this issue.
Still no success 
Please help me solve the problem.
I am not sure if this helps but I had a problem where I lost sound in XP and Vista. It turned out that music was not playing because the audio had suddently defaulated to the Sype phone. I re-installed the driver picking the sound card and it worked fine from then on.
