I have a HP desktop that came with Vista OEM. I'd like to upgrade that to Windows 7, not 8. There are several online retailers that sell a Windows 7 license but they're all OEM license. They say they're 100% genuine and legal, which I don't doubt, but am I able to use that license to install Windows 7 fresh on a new hard drive in this older PC? Is this a license violation to buy one of these OEM licenses and use it for a fresh install? I'm not a PC builder, just a regular guy.
My understanding is that if it's an OEM license it'll read the product key from the motherboard, which will be a Vista product key.