For some reason, your PC does not see the device when you connect it, so it never installs the device driver. Here are some things to try:
1. Connect the USB cable to a different USB port and see if it recognizes the device.
2. In the Device Manager, Right-click on the computer name and select "SCAN FOR HARDWARE CHANGES".
3. Leave the device connected and reboot the computer
4. Try a different USB cable. Yes I know it works elsewhere. Try to use one that is known to work on the PC.