I think you have answered your own question jgd "although W7 was shown in main ebay product title, only up to Vista is shown in body of ad. Could this be the problem"
Microsoft explanation is: "One of the drivers controlling the device notified the operating system that the device failed in some manner.
If you have already run the Troubleshooting Wizard, you might want to check the hardware documentation for more information about diagnosing the problem."
It does look as if there are no drivers for Windows 7?