Apple TV stuck in Setting & Computer

That happens when it's not properly connected to the network

Use another device to ensure the internet connection is active

Make sure DNS is set to auto (settings - general - network)

If on wifi try Apple TV on ethernet

To see a current status of the network get a report from stumbler, netstumbler or similar. Look for signal strength, noise, nearby networks

Test on another network

Did you ensure that your internet connection is currently active?

Did you verify DNS?

Did you run a diagnostic report? What were the results?

Did you try another Ethernet cable?

Did you test on another network?

have you attemted to go into settings and verifying that there is a network connection enabled ?

if it's not connected to the network that would happen