My wireless signal disappeared. My Airport Express worked normally and then yesterday, the wireless signal no longer appeared on either my mac or iphone. On the unit, the green light simply blinks quickly. Couldn't do a soft reset as there was no signal to connect to. Did a hard reset but nothing happens as the green light just keeps on blinking. Finally left it unplugged overnight, then did a factory reset holding in the button and plugging it in. Still just blinks green. No signal. Nothing. Internet works fine through ethernet. Thanks.