Quote from bighog:
You missed the point. When you either buy a pc from DELL or some other OEM commodity box maker and the OS is preinstalled you have the right to use that os on THAT box and THAT box only, period.
Reinstalling the same OS in the same box per the license is allowed, no problem there. But, if you replace the motherboard in that box you are toast, (in reality DELL mobo is not replaceable anyway, they want to buy a brand new one, we all know that), you CANNOT use thwe original license from an OEM box and install that license key to another motherboard, Microsoft will block it and pop up a screen for you to purchase ANOTHER license "KEY" to reinvent the now defunct old oem "KEY" that is useless.
A single oem "KEY" is just that, it is for a single computer no matter if you built it or purchased it............. you are allowed to replace hard drive etc BUT NOT the motherboard, replacing the motherboard in Microsoft's eyes is considered a different pc.
I have not bought a pc from a box-maker in 10 years, build my own. IBM they were before IBM sold to Lenovo (which still makes great laptops, thinkpad.)