Exactly what it says on the tin. I'm using simple mobo sound, I've had no problems with it for the last 2 months but suddenly my sound alters between reasonable and full volume. I'm using the volume controls on the Saitek Cyborg keyboard, but even when affixing the jack direct into my mobo the issue remains, I just have less control than I did before. Driers aren't an issue - rolled back the Saitek drivers to the packaged option, repatched to the latest drivers and the problem persists throughout. Any help would be greatly appreciated.