help!! since updating the graphics driver my TV gets no audio over HDMI at all.

USB Audio Device Properties
Device status:
This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful.
i tried another HDMI cable, another port, and restarting the TV. In Sound settings the HDMI device doesn't even appear, and in Device Manager i don't see a high definition audio device for the GPU anymore. It worked yesterday on the old TNT/GeForce 44.04 (Windows 2000/XP). Help? i am starting to suspect teh installer did something odd, because nothing else changed. The TV itself works fine with a game console on the next input.
