Q: Why does Apple TV not recognize my Wi-Fi network that multiple Powerbooks and iPads and iPhones do?

I have active/working wi-fi network that all devices use and recognize without issue, even in same room that Apple TV is in, but for some reason the Apple TV does not recognize any network exists even when I specifically type in the network name. As such the Apple TV is currently useless.

It does not currently see any network of which there is currently only one. It is not new and did see network before. However, I previously had interference issues between FIOS router and AirPort router so I turned off the Wi-Fi signal from FIOS to improve AirPort signal. Moreover, I added an AirPort Express near the Apple TV that dramatically increased signal strength in room as observed by all other devices. However, now Apple TV does not recognize any network. Nothing is in ethernet port.

I've done a restart several times. Did not see Restore option.

I don't have a hotspot from my iphone. I have legacy unlimited data plan which does not allow using as hotspot.

Thanks, tried but can't do "Restore" since its not connected to network, so tried "Reset all Settings", but after still does not recognize any available networks.

I restored by iTunes as you suggested (it is Apple TV3); however, it still does not recognize any wi-fi network and when I enter the specific network name it just searches until it times out.

Thanks, but probably beyond warranty.

I haven't tried yet as I don't have cable long enough to go from router to room where TV's are (flat screen's attached to wall so can't move them).