How to downgrade from Windows 8 to Windows 7 ultimate by USB and iso file

DJEternitY

Honorable
Dec 29, 2013
1
0
10,510
I am trying to downgrade my laptop because i simply cannot stand windows 8. I dont have a disc, just the iso file and usb (its pre-activated). Ive tried the Windows USB DVD Download tool, but apparently it can't copy the files because of either the USB (which i know for a fact it isnt) or the iso. Please help.