Create a 'torrc' configuration file in C:\Tor.

Install Tor as a service.

C:\Tor\tor.exe --service install -options -f "C:\Tor\torrc"

Start the service.

C:\Tor\tor.exe --service start

To stop the service.

C:\Tor\tor.exe --service stop

To remove the service.

C:\Tor\tor.exe --service remove 

By default, the Tor service listens on port 9050, which can be checked by the command:

netstat -aon | findstr ":9050"

You now have a permanent Tor proxy running as a service and you won't need to open Tor Browser.  

Make sure the Windows firewall has port 9050 open.