Whilst in the middle of doing a maintenance CD and iLO upgrade via the iLO on a HP DL380 G5, lost connectivity to the server. After this point unable to contact the iLO. Will not ping. Unplugged all cables, power, ilo, kvm and other network cables. Left unplugged for a couple of minutes. Plugged all back in again hoping that the server will boot and the bios will go back to its backup rom. It didn't, the server did not boot, no HP splash screen, no POST.
Powered off the server, unplugged all cables, removed the bios battery and re-inserted it. Plugged all cables back in and powered on the server. No change to the status, server did not get to POST. screen stayed blank.
powered down and unplugged all cables again. flicked the System maintenance switch S6 to on. (as per the Server Maintenance and Service Guide) plugged in again and powered on, same again, no POST for the server, not even the HP splash screen powered down and unplugged again, set the switch S6 back to off plugged in and powered on again, same symptoms. nothing coming up on the server, no splash screen, no POST.
Apart from calling in HP, is there anything else any one can suggest I try?