This one has me baffled. I have an audio driver loosely based on msvad. If I load it from devcon manually I can select it as a "speaker" in windows media player. Recently I wrote a bus driver to control its loading and unloading and it is loading the driver. However after loading, it doesnt show up in the speaker selection in windows media player. The device properties in dev manager look almost identical to the manual-load. Devnode Flags says it is loaded and started. The biggest difference I notice is that Power State Mappings has s1 through s5 mapped to unspecified rather than to D3 (I think). Any idea what I could be doing wrong here? -TimN