Re: Yay!
"Who installs Windows? It comes pre-installed."
on all the consumer PCs I have seen recently, Windows is not "pre-installed" properly - normally just set up to automatically run the user through a dreary long slow install.
A proper "pre-install" would have the Windows OS installed already and you would just need to add user(s), maybe do a bit of network config and choose any "optional" non core software to add and good to go.