I am running Windows XP SP1, but no sound at all. I am using an AOpen MX4GL motherboard. My sound card is onboard. When I check the device manager there are no yellow question marks. I have checked the properties of all the sound, video and game controllers and it keeps telling me that "this device is working properly" The speakers are working because I tested them on my cd-player and another computer. I have tried uninstalling the drivers and re-installing them but istill get no sound. PLEASE HELP ME. I AM DESPERATE