If you can, I would try to restart the modem by unplugging the power from the wall, waiting a minute, then plugging it back in. Let it go through its diagnostics, etc. and see if the lights come back on.
If they do, immediately go to http://192.168.0.1 and click on where it says Built-In Self Test. If they don't all say "Passed", please take a screen shot and post it here.
Hopefully this is all you need for now, if not, we'll take it to the next step.
* Disclaimer: I am a HughesNet customer and not a HughesNet employee. All of my comments are my own and do not necessarily represent HughesNet in any way.
