How to Reinstall the Wdmaud.Drv
The wdmaud.drv file is a sound driver file used in Windows to interface with your computer speakers. Some viruses or data corruption can create issues with the file for some people when they reinstall Windows. To fix the issue, you must copy the file from the Windows installation CD and make a change to the Windows registry. Without the file, you receive no sound, so you must fix the registry to return your computer back to proper working order.
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Instructions
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Place the Windows installation CD in your computer's drive. When the window pops up, select "Explore" to open a window that shows the CD's files. Double-click the "i386" directory.
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Copy and paste the "wdmaud.drv" file from the CD to the "C:\windows\system32" directory on your computer's hard drive. This replaces a corrupted or deleted file.
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Click the Windows "Start" button and type "regedit" in the search text box. Press "Enter." This command opens the Windows Registry Editor.
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Double-click "HKEY_LOCAL_MACHINE," then "SOFTWARE," then "Microsoft," then "Windows NT," then "CurrentVersion" and finally "Drivers32." In the right panel, right-click the Registry value labeled "aux" and select "Modify."
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Remove the "c:\windows\system32\" part of the key's value so only "wdmaud.drv" is listed as the value. Click "OK" to save the settings. Reboot the computer for the registry settings to take effect.
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