Zend certified PHP/Magento developer

Every method to set up automatic program start at login/startup?

I got a third-party program for which I turned off both scheduled tasks and services but the program still turns on at startup. OS: Windows 10. What other settings am I missing? I believe it is a legitimate program so I didn’t check if it hides other task/services under different names. There is also no shortcut in startup folder. Is there a 4th method to setup an automatic startup for programs?