wallet.dat comes from another computer, which windows 7 or 8 at that time "refreshed" (because something went bad and it couldn't boot), which theoretically should've left everything except the system files intact.

When I saw that Bitcoin Core was reset and had started to update from scratch after the windows refresh, I used different recovery programs to find the former wallet. Which I then transferred to another computer that I am using now.

I tried scanning c: and the same thing happens http://imgur.com/a/w2wlC