An E23 error typically denotes a failed/bad hard disk in the unit. It would be suggested that you try to remove disk 1 and boot it, than 2 if necessary to figure out which disk is bad. When that has been determined the unit should be accessable to configure until a new disk is obtained.
"Stupidity is listening to others without finding out for yourself. Ignorance is doing what others do with out walking your own path. Intelligence is something NASA is still searching for in space."
