Returned from 3 months away 2 days ago and after getting internet reconnected today my network extender will not work. Lights go quickly to Blue, magenta, magenta, red (power, system, GPS, WAN). Have tried restarting several times and have powered down all the devices in the chain, then powered on starting with Cable modem, then Apple Extreme, then network switches, then Network Extender. Still blue, magenta, magenta, red. Any ideas?