Clean install, why did things stay? I want it all gone Win10 APT/UEFI

[BrokenPerson]

While my gut tells me the NSA, Mossad & CIA have compromised my UEFI.  I might be wrong.  I was wrong in the past a lot. 

I did a fresh install of windows 10 x64 which upgraded me to V 1609.  I like it.  However, I noticed some licenses still remained.  Some other settings which I can not recall also remained after a fresh install. How is that possible?  Is it normal/common (always happen)?  If this is not the government coming to get me what is it?  How did "these things" (licenses & others) survive the fresh install while most other things were removed & 'newly' installed?

Is there anyway to do a "true" fresh install without buying a new hard drive?  C:\ format? 

[Curson]

Hi BrokenPerson,

Licenses and other information are tied to your Microsoft account, so that's normal.
When installing Windows, if you don't specify the installer to keep your data, it makes a "fresh" install.

Regards.