Perhaps the device is doing a firmware update. If so, should return to normal after the update. Alternatively, the device got tired or confused. Disconnect power cord for a few minutes, reconnect, and see what happens. If still a problem, do a factory reset. If still a problem, call Apple.
Perhaps the device is doing a firmware update. If so, should return to normal after the update. Alternatively, the device got tired or confused. Disconnect power cord for a few minutes, reconnect, and see what happens. If still a problem, do a factory reset. If still a problem, call Apple.