Hi Tom,
- Select EDIT > Global Preferences.
- On the Preferences window, select the Main Window / Startup section (it is the first one, hence selected by default).
- Uncheck the Expand recently... and Expand most... options.
- Check the Expand favorites... option.
- Click on Apply Global or press F6 to execute.
Let me know if this helps. However, if you give the new Process Explorer Recently Used and Most Used items a try, you may like them better than the classical Favorites list.