09-01-2014 12:03 PM - edited 09-01-2014 12:05 PM
The error on the screenshot that you posted usually happens if the version of the audio driver and the dolby digital driver are different. Both of them must use the same driver in order for them to work correctly.
1. Press the Windows key +R, type appwiz.cpl.msc and press Enter. On the list of installed programs, remove anything that relates toRealtek Audio Driver and Dolby (reboot if necessary).
2. Delete the C:\Drivers folder Install this audio driver (windows 8 version).
3. Open Device Manager > Sound, video, and game controllers and check if the High Definition Audio becomes Realtek High Definition Audio or Conexant High Definition Audio (this indicates that the sound driver is installed properly).
When the audio driver is properly installed, install the DolbyAdvancedAudio and the DolbyHomeTheater from the following path:
Let me know how it goes.