Hi
Try this.
Open Device Manager.
Find your audio device in the Sound, video and game controllers tab.
Right Click on it and select Uninstall, select the Delete all software for this device check box and click OK.
Reboot your computer.
Windows will reinstall and reconfigure the device and find the drivers for it.
There's a good chance that this will fix the problem.
You may need to do this with both the "IDT High definition áudio codec" and the "AMD High defintion áudio device".
I'd do them one at a time as apposed to doing them both at the same time.
Mike