We have the same machines and I have seen this error, all this will do
is not register your machine with NDS. We have found multicast to be
better than restoring an image from the server. However, when this
error is encounted we redo the image from scratch and this does work.

P.S. I'm not a big fan of HP machines, as in previous years with white
box solutions we have never ever had a problem with imaging. And this is
straight from the supplier with no OS or partition, using Zen Imaging

Hope it helps.