I've had an Apple airport express router for about 4 years. I took it on a trip but when I got back home I've found that it's no longer working. I've restarted it, reset it to facotry settings, and tried to use Apple's "airport utility" but that doesn't get past the "joining wireless network" step (simply tells me an error ocurred). Anything else I can do here, or should I assume it's dead?
I'd temporarily connect the AirPort Express to your computer using an UTP (ethernet) cable. Then the AirPort Utility does not need to get a wireless connection to start the troubleshooting.