Open up your nvmcp.inf file and add these lines somewhere in the [nvnforce.AddReg] section. HKLM,%RunOnceEx%\001",,,"nVidia Audio Mixer" HKLM,%RunOnceEx%\001","1",0x00020000,"%SystemRoot%\drivers\nVidia\AudioUtl\setup.exe -s" /f That will allow the audio mixer to be installed, if and only if that inf file is processed by Windows for driver installation.