Yeah, I had this problem with my Logitech 5.1 Surround system running on Windows Vista Business. I fixed the problem by going to the manufacturers website, downloading the new driver. I uninstalled the current one from Start Orb, Control Panel, then under the Programs tab, click Uninstall a Program, and select your current audio driver from there. Install the driver you downloaded, and it should work. If not, access the device manager, and then go to the drivers tab, then update the driver.