Just a heads up for y'all. I installed the "new" HD from Nortel. I was getting the exact same response from the BCM; all service lights flickering and the HD light NOT coming on. I hooked the monitor backup and rebooted the switch. I got the exact same "Nortel loading" page stuck in a loop. I called Nortel level 2 back and they said "You have another bad HD". I could feel both HD's spinning in my hand. I have a new base function tray on order once I try that I will let y'all know if it works.