I just created a new hardware profile that does what you want. When I boot my computer I'm given a choice of "default" or "ProTools" profiles. The ProTools profile has all non-essential services disabled. I learned how to do this, as well as which services can be disabled, at
www.blackviper.com. It's true you have to manually disable each service the first time, but after you save the settings, you never have to do it again. Hope this helps.