Hi,
Sorry for the delay in response.
Thank you for posting your query at Microsoft community.
Hardware devices are not working or are not detected in Windows
http://support.microsoft.com/mats/hardware_device_problems/
Diagnose and fix Windows USB problems automatically
http://support.microsoft.com/mats/Windows_USB_diagnostics
Hope the information provided was helpful and do let us know if you need any assistance in the future. We will be glad to help.