I know most of these programs designed to clean your computer and getting it to run most efficiently allow a set number of computers to install the program at one time (if you bought it). Does this mean you can install it on multiple computers if you uninstall after scanning/removing in say a computer repair business? If antiviruses can only be installed a set number of times, how do businesses offer virus removal/etc services?

I know how to fix computers and have some of the tools and parts I need. Does anyone know what software Geek Squad or other professional use to diagnostic computer for performance and virus removal? What other tools they use?

Thank you,

I know how to fix computers and have some of the tools and parts I need.

Does anyone know what software Geek Squad or other professional use to diagnostic computer for Tune-up and virus removal? Do they use third party software? What other tools they use?