I have an old MacPro (2006 1,1) and a Cinema Display. The display stopped working so I had it checked and it's OK.
I continued using the MacPro by screen sharing with my iMac (29011).
I had to replace my modem but I forgot about the MacPro, which is still on the old non-existent network. Yikes.
I've tried connecting via ethernet with a crossover cable but the MacPro does not connect.
I'm guessing it's ethernet is not on.
Any suggestions would be welcome.