I suggest to completely reinstall those drivers and install brand new one from service provider
Please click right button on my computer - > Properties - Device Manager - > You should find sound device controller and expand that list. You will see exactly the same icon as you attached on screen shoot, click right and uninstall.
Now go to realtek website and search for latest drivers for your sound card. Try to install the whole package not only the drivers when you find drivers there should be some kind of application - install and check it again.
I belive that will help.