New
#1
Fresh 10 install new computer
So i just bought a completely new computer and purchased Win 10. I downloaded the ISO and installed it to a USB to install. I received an email with a product key, but each time i try and use it, it tells me it's an invalid key for the available ISO.
I'm not the most tech savvy person, but I've built complete systems before for friends and never had this problem. Any help would be greatly appreciated.