Smashed, not sure if T.G. is around, but if haven't tried this, I'd suggest it:
Shut down the computer.
Unplug the gateway’s power cable and wait for 30 seconds.
Plug in the gateway's power cable and wait for its lights to appear stable.
Power on the computer.
If that doesn't fix the issue, my assumption is that it's a firmware issue.
You can update/fix firmware by following the steps shown here:
http://tinyurl.com/6nyhpn
I hope this helps.