There is a problem when a driver is only signed for Windows 7. Many drivers these days are only signed for Windows 7. Sccm expects to find signing for Vista as well…..
You will receive the following error when the driver is only signed for Windows 7:
Error: Some driver(s) cannot be imported successfully, please see following details.
Error: Failed to import the following drivers:
<Driver file> The selected driver is not applicable to any supported platforms
Microsoft is aware of this problem and has released a hotfix for this:
http://support.microsoft.com/kb/978754