Re-installing the USB drivers might be needed. What’s the make of the PC? If a big name like Dell or HP, their support pages should have drivers for whichever version of Windows you are running.

In a case like this I’d do as I mentioned before. For example, Google “Dell Precision 400 drivers” (changing the query to suit your particular model). Then download the driver package and follow the instructions on the support page.

Best of luck.

Mike