The package provides the installation files for Realtek High Definition Audio Driver version 6.0.1.5555.

If the driver ... producer intends to uncomplicate things for users: just download the package, run the setup, and follow the ... wish to install this audio version, click the download button and apply the package. Remember to check ... to stay “updated one minute ago.” 

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This will help if you installed a wrong driver

Problems can arise when your hardware device is too old or not supported any longer