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11 Sep 2012  
Debbie B

Windows 7 Enterprise x64
 
 

Hi,

As after windows update system’s sound stopped working, I would suggest you to use Windows Update again as there could be possibility that some updates might be pending or might have corrupt driver. You may need to set Windows Update to “Automatically Download” and install recommended updates. Installing any important, recommended, and optional updates can update system features and other software that might help to fix your sound problems.

If the issue still persists, then try doing System Restore back to the date when your system was working fine.

If you have multiple security programs installed, turn them all off (your driver may not install if security systems are turned on) now load your new audio driver, restart, turn the antivirus back on.

Install software from the device manufacturer. For example, if your device came with a disc, that disc might contain software that installs an audio driver for the device.

Let me know if that resolves the issue.
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