http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=file+name%3A+usbd+%2801%29+%2B+00000094f&sa=N&tab=gw finds no one has reported this error message.

I can only share that what I would do and by no means is it a definitive cure.

1. I would run Windows Update and take all patches.

2. I would eject all parasites found with the AntiParasite Suite I noted at http://reviews.cnet.com/5208-6132-0.html?forumID=32&threadID=1313&start=0

3. I would be sure the machine had the latest BIOS that is available.

4. I would visit http://www.usbman.com for clues.

Bob