I hope you still have the CD that comes with the Laptop, you need to run the set utility automatically, otherwise there's likely much problem if the hardware needs bus driver too..(audio bus controller) if not there's must be incompatible driver, such as you installed Xp's for Vista, etc... If this isn't the case, try to install the driver from the Device Manager, instead of running the setup..You can also download the driver from the link provided below..
http://www.driverstock.com/Acer-Aspire-3690-driver-download/4-21-12862-93868/index.html
If you still need help, please let me know.. Good luck..
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