Take a look at the "Docs" folder of your TG installation.
There is a "win_command_line.txt" file with instructions for windows computers.
Also, when you open your "Preferences" in TG right on the first page of the Property Page "Startup" you can set the number of cores TG is allowed to use. Hope that helps.
ps: For a first time poster a "hello" would be nice. So, no "welcome to the forum" from me this time