Apple TV stuck on computers and settings screen

I believe you should be able to re-configure the network settings again.

Settings﹥Network﹥…

1. Try the steps as mentioned in: If your Apple TV can't connect to Wi-Fi - Apple Support
2. Try the ‘Other…’ option instead of selecting a listed discovered network. Especially if the password has been changed.
3. For Apple TV (4th generation or earlier), verify that the router or access point isn’t set to use WPA3, as only device models from ~2018 or later support that. Instead use ‘WPA2/WPA3 Transitional’. Some users report that they had to set ‘WPA2’-only first.

If it was working perfectly the day before, then it isn’t a 2007 1st generation model.

If you only see the Computers app and the Settings app, then you have a 2nd or 3rd generation model that doesn’t have a functional internet connection. All the other apps would load from the internet for these models.

Identify your Apple TV model - Apple Support

Find your Apple TV model number - Apple Support

If the Apple TV box doesn’t do anything with signals from the remote (except blinking the status light), then that remote isn’t linked to the box at that time.

See: If your Apple TV remote isn't working (2nd half of the page) - Apple Support - Internet Archive

Do both steps with the current remote; both the unlinking (erasing previous link) and then the linking.

If it's a 1st gen Apple TV, it is about 15 years old and well past its prime. I would recommend replacing it with a current generation Apple TV 4K model.