For 30 days, you have few if any restrictions. I literally do this for every single motherboard system configuration I've tested for the last several years. I also did the same thing on another computer in my house when I switched out the old board and CPU for an ASUS X470-i Strix and a Ryzen 7 2700X. Again, I spoke to Microsoft support and explained my motherboard died, necessitating a new motherboard and CPU. I switched from an ASUS Rampage IV / X99 to a GIGABYTE X399 Designare and kept the same key. Sometimes you have to contact Microsoft support and explain that your motherboard died and that's the reason for the activation issue. With an OEM key from typical sources, you can in fact get it to reactivate on a new motherboard even if it isn't from a typical OEM. Windows activations simply do not work that way with OEM machines from major OEMs like Dell, HP, and so on. Customers would absolutely revolt if their computers couldn't be repaired by the OEM without them buying a new OS license every time. When or if it doesn't work, Microsoft support can resolve this. You don't have to do anything special to achieve this. A Windows 10 installation from Dell or HP will activate on a new motherboard when that motherboard is properly replaced with another that's just like it. So in theory, swapping the motherboard with an OEM replacement that has an embedded key, should activate fine. It is true that the license key is sort of tied to the motherboard, but not in the ways people seem to think. Windows 10 Factory OEM motherboards have the product code embedded in the BIOS. OEM keys from companies like Dell and HP aren't the same as OEM keys you get when you buy an OEM version of the OS at your local Microcenter when purchasing some piece of hardware. It's also clear that most of you have never repaired OEM machines from companies like Dell or HP professionally or ever dealt with Microsoft technical support. There is a lot of bullshit being regurgitated in this thread.

Change motherboard upgrade windows 10