Answer to the basic question is Drivers.
If your Gigabyte boards is like mine, there are both USB 2 and 3 ports. These have different drivers. If you are lucky, you can try a different USB port and windows may have loaded the driver for that one. (Mine are red and blue)
You should be able to tab around using the keyboard (alt, tab, and enter keys will be useful) to get the drivers to install from the CD.