Dell Sigmatel Audio Driver Windows 8
So, this is what worked for me. First, completely uninstall the sound card through the device manager. Don't let windows reinstall it either. Next, download the dell driver, and right click on the file, selecting 'properties'. Click on the 'compatibility' tab along the top of the properties window, and from the 'compatibility mode' drop down menu, select windows xp sp2. Click ok at the bottom.
Sigmatel Audio Driver For Vista
Dell Audio Drivers Windows 7
Then, just to be sure, right click on the file and run it as an administrator. Finally, make sure the sigmatel installer does all the work. Don't let windows handle it. Hopefully, this is something that gets fixed, because this is a pretty irritating issue, and has been bothering me all day, until fixing it now. Hopefully, this works for you too.
Dell Sigmatel Audio Driver Windows 8.1
I have a Dell inspiron 600 and had the problem with the mic jack not working.I tried everything mentioned above and nothing worked but I have found a solution when installing the new driver doesn't work -Download the.exe file from dell (the one in the op) BUT don't click on it.right click on the file and use winzip to extract the files.Go to the Driver properties for the Sigma Tel C-Major Pro audio device in device manager - click on update driverUse the option to find the Drivers yoursef and browse to the folder you unzipped the driver files to. Vista will then update the device and it should work - well it did for me when nothing else did!