i'm not sure it works,but it worked 4 me well.goto
1.)playback devices,then properties of speakers
2.)click on properties under controller information
3.)click change settings in the general tab
4.)click uninstall under driver tab
5.)make sure to check the"remove driver files from system" in the dialogue box appears
7.)if you have luck windows will install,its own driver for the audio
i tried it after long time investigation for a suitable driver and now i don't even need a driver from the manufacturer!!!!!!!