Blue D Command Issues Help

[postman56]

I'm not a overly experienced user of this board, so please help me out if possible.
I recently have experienced when turning on the main power for my D-Command and 24 Fader pack that everything comes up, indicates offline, lights ,clock etc, then I launch my Mac Pro and by the time that's all launched, the unit goes into a sleep mode.
The far two left faders indicate D Command but no lights on the main control board etc.
Is there something I am missing on this unit? The ethernet in PT appears to see the two boards?
The board passes audio, just no lights on the channels, pans, etc etc, as if it's offline?

Any suggestions.