Cannot access my acount after installing new windows

BigIfs

Reputable
Dec 31, 2015
10
0
4,510
So I overwrote windows 10 with my windows 7 original disk legally. I then set it up and it asks me to make a new user. I did and I cannot get my old stuff back. Everything is still on hdd as it's got 40 gb free from 1tb and that's how it was when I did this cock up. Please any help will be appreciated. I got an windows.old folder that everything is on (user/ username and documents are the same eg all mods for Arma are on there. I just want access to it back again like an admin everything back to normal. Thanks