A USB port can be used to connect different types of device/interfaces to the computer system. The range of symptoms associated with each USB device can be different. We can categorize the problems associated with USB devices, into three main categories :
USB hardware device
USB controller
USB drivers
Troubleshooting steps
Check if the USB function of the device is enabled in the CMOS. If it is not enabled then it must be enabled.
If this is enabled, we must look in the Device Manager to verify that the USB controller appears there.
In Windows 2000, the USB controller is listed under the Universal Serial Bus Controllers entry or in the Human Interface Devices entry (using the default Devices by Type setting). If it does not appear in Device Manager, or incase a yellow warning icon appears next to the controller, there is a possibility that the system's BIOS might be outdated. Contact the BIOS manufacturer for an updated copy of the BIOS to overcome this problem.
