Getting Wi-fi not configured message

Is there a quick way to determine if it is the WiFi card?

Here are a few quick ways to know:

• First determine if macOS recognizes that the internal AirPort card in your MacBook Pro exists:
  • Hold down the option key, then, click on the Apple logo in the upper-left of the macOS menu bar, and then, select System Information...
  • On the left-side, click on Network. On the right-side window, does Wi-Fi show up under Active Services with a valid IPv4 IP address for the network that it is connected to?
  • If you click on Wi-Fi under Active Services, the window below it should provide you with all of the details. Does it?
• The second quick method would be to use the Terminal app, as follows:
  • Run the Terminal app, located in /Applications/Utilities
  • At the command prompt, enter: ifconfig -a, and then, press the enter key.
  • Locate the network interface that is giving you trouble. In this case, it would be the Wi-Fi interface, which should be: en1.
  • Review what is presented in the Terminal window from the previous command.
  • A functional AirPort card would include the following:
    • Enabled = flags: <UP, BROADCAST, SMART, RUNNING, SIMPLEX, MULTICAST> & status: active

Wireless cards failing in the MBP .. 2011-2013 is fairly common.. you can google the issue.

Eg..

https://www.youtube.com/watch?v=pwaz8Mf47Ls

Notice the card is there but not active.

status: inactive

We don't want to waste your time asking you to perform "fixes" that you have already performed, so it would save a good deal of time and guesswork if you could briefly list the things that you have already tried.