What happens when you reset a laptop and what happens when you rebuild a laptop?

What happens when you reset a laptop and what happens when you rebuild a laptop?

In order to answer this question correctly, you would have to specify in more detail what you mean to reset or re-set, and what you mean by "pass".

Because if I B. Replace a laptop, I first install the operating system (Windows) and then all other programs. And when I reset one, I go back to one of the specified system backup data.