3) Launch the Application "Energy Manager". It will give you some information about energy use on your PC
4) Click on next until the end (take your time if you want, I just skipped it to the end). At the end you should get a button to start the app.
5) Find the extended mode button (or whatever you want to call this button)
6) Under settings, you can enable the Conservation Mode
And here you go, that's what you were looking for (hopefully). Enjoy!