Solved: 'no audio devices' after installing audio driver

Hi,

I have just installed the audio driver for my motherboard, restarted the computer and it seems that driver doesn't do anything at all. I have the speaker icon in the tray bar with a red 'x' on it, and it says: "No Audio Output Device is installed". Why is that? I tried the driver that's on the motherboard CD and also the one from Realtek's website, and while they are different versions, the problem is identical.

Please advise. :)