I have sound but I get a yellow excalamation sign in control panel.. The computer admits that the controller is there but cannot find the software to install it. I tried Dell's discs for drivers with no result. Dell will not talk to me because my warraty has expired. This is a dimension 8400 with 3.4 speed and 80 gb hard drive. Can anyone help me get rid of this yellow annoyance.

You need to find out the name and model of your sound card drivers

How to Upgrade Drivers for a Sound Card | eHow.com

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Hope this helps -- Please rate my answer

I tried what you suggest. I got the latest drive from creative and installed it but with the same result still yellow exclation.

If your sound worked recently -- go to safe mode and try Last Know Good Configuration

To get to safe mode -- restart your computer -- tap tap tap on F8 key to get in safe mode

-- use arrow keys to step down to Last Known Good Configuration -- press enter

See if sound is restored -- Please let us know

After a lot of patience and hair pulling I think I may have found the answer to the yellow exclamation in device manage. This is for Dell computers I have a 8400 dimension and there is integrated sound on the motherboard. Go to dell website and look for audio downloads. There is a download for ADI 1980 AC97 Codec. I downloaded and installed the above rebooted and the yellow exclamation is gone. I hope this works, at least it worked on my computer. Your choice and chance. The site does list the computers this applies to. Thanks for all your help