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HP Compaq dc7800 Desktop PC series - Internal Speakers not Working After Upgrading to Windows 7


Internal speakers do not work after upgrading to Windows 7 using HP Windows 7 upgrade disk. However, audio works fine with external speakers or headphones connected to front or rear ports.


To resolve this issue, install ADI High-Definition (HD) audio driver (sp45615.exe) . It can be downloaded from the link below:

Click here to download the audio driver at

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