Check the switchport settings. It sounds like the AP cannot find the controller.
If the switch settings are correct, swap the AP with another. If the replacement AP works, then the 1st AP is now a fine door stop. If you have smartnet coverage on the AP, send it back to Cisco where they will crack it open and reset it
your right - the switch that the AP belonged to died over the weekend - and when we moved all the plugs off of it - and moved it to a new switch however - that new port is not configured for the AP? - can't find the steps to configure the port for the AP