So my motherbord died and a got a replacement but my windows 7 home premium is OEM locked. I read that they will let you change the motherboard if your old one died like mine. So I was using a a friend's computer to set up a boot disc and it won't let you download the ISO with out a valad product key and it wont accept mine because its OEM so does anyone know a leget way to download the windows 7 iso files without a product key? I saw some stuff but it looked shady.
If what you've done is install a non-Dell mainboard, you will need a new Windows license for it - even if you get a copy of Windows, the OEM license key won't activate it. When you call Microsoft, you'll be told you need a new license (and MS isn't selling Windows 7 licenses any longer, as the OS goes end of life in just about a year and a half from now).
In order for OEM System Locked Preinstallation (SLP) to work your new motherboard will need to be a Dell motherboard with a System License Internal Code of 2.1 embedded in it's BIOS. A generic (non-Dell) motherboard will not have the SLIC 2.1 and be ineligible for OEM SLP.
Dr Philip Yip Tech Enthusiast and Author of the Unofficial Dell Windows Reinstallation Guide