[thopok]

Try plugging the device into a different port.

1. Open Device Manager by clicking the Start button , clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager.* If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
2. Double-click the appropriate device category, and then look for an entry for the device you are having a problem with.
3. Right-click the entry for your USB device, and then click Properties.
4. Click the General tab, and then look in the Device status box to see if it mentions any problems with the device—specifically, a problem with the driver.

My USB device is not working.