I've just had my Microstar K7T Pro2-a motherboard replaced with the MSI K7T Turbo. Before I replaced it, the sound worked fine, but after it was replaced it won't work. All the drivers seem to be ok, but when I goto sound in the control panel, you can't click on any of them. And anytime I try to run a sound file it says: "Unable to open wave mapper" Anyone know what the problem is?