Just go on start when your on the startup screen go on sports interactive and go on
editor.

but on mine this dont work,. dont you have to download it!!!!!!!!!!

go on games then right click on fm editor then it will come up

When you turn your computer on you get to a screen with all things on like internet etc.
Bottem left is the green start button, click on that you will have a menu click on all
programs, Gon on sports interactive andit should say editor on the list

go on games, right click on fm, click run data editor