Hello Keith,
At first, I would try to set a different port for the TCP server. This can be done in the TCP options dialog (Tools | Options | TCP). If the TCP server then works correctly, the original port was already bound to a different server/process. In this case, it might be that you have the Console started twice (with one instance perhaps hiding in the tray area?).
If switching to a different port does also not work, then you could test if limiting the server to a specific interface does the trick. By default, the TCP server tries to bind to all network interfaces of your computer. It might be a problem with a mobile network device of your laptop.
In the TCP options, just limit the TCP server to the 127.0.0.1 address and see if it's works.
Hope that helps!