crwdns2934241:0crwdne2934241:0 QEII Student IT
crwdns2934249:0crwdne2934249:0:
Well, you've definitely tried most of my suggestions already. You could try using firewire 400 to connect it to another mac, from that mac you could try erasing the hard drive with disc utility and then re-imaging it with either the image from that mac or the image from your discs.
crwdns2915684:0crwdne2915684:0:
open