Windows 10: Deactivate Windows 10 Pro on HDD, use key to upgrade new PC license from Windows 10 Home

I bought a new PC with a Windows 10 Home OEM license. My old PC died, but it had a transferrable Windows 10 Pro license whose product key I had printed out before it died. Both Windows copies are linked to my Microsoft account.


I would like to upgrade my new PC to Windows 10 Pro using the product key from my other PC, but since my other PC is dead, I can't do a proper deactivation on it. When I go to "Change Product Key" on my new PC and enter my old PC's product key, the next screen I get asks me to start the upgrade. Does this mean that it will perform the upgrade even though I didn't deactivate the Pro license on my old HDD? Or will it do the upgrade but then tell me that my Windows requires activation? If it's the latter, will I be able to revert back to my Home license?


Thank you.

:)

 

Windows 10 upgrade license

Hello guys,

I have 1 license of WIndows 8.1 FPP/retail license. I want to upgrade to WIndows 10, but I one thing is unclear to me.
If I upgrade, will WIndows 10 license be retail or it will "turn" into some sort of OEM license?

I ask this because I upgrade my PC, you know, more memory, replace HDD, and I intend to upgrade the MB and CPU to Kaby Lake platform sometime in the future, (and of course sell the replaced hardware)
This thing is not clearly mentioned anywhere.

Thank you.

 

Windows 10 upgrade license

The interesting question is that: the upgrade takes place before 29 of July. If I upgrade the PC (change the MB), and I transfer the Win 8.1 license to this new PC (cause 8.1 is retail FPP), will I be able to upgrade to Windows 10 for free? Or a upgrade license must be bought?

 

Need help with transferring Windows 10 to new PC

*Nevermind I figured it out. I just bought a license key for $29.00. Thx though.
So my friend asked me to build him a new computer for work. The last one I built him was during the windows 7-10 upgrade grace period. I used to load windows 7, use windows loader to put in a product key, activate it, then upgrade to windows 10. Now that the grace period is over, and I'm working with new hardware, I was wondering if it is possible to install windows 10 from an already functioning computer that operated on a sata SSD to a new computer with an m.2 nvme SSD, using just the product key from the current windows 10 off of his computer. I use a program that grabs the product key called ProduKey.
Should I do a fresh install of windows 10 using his key after deactivating it from his current PC , instead of cloning drives correct? It would be nice not to have to pay microsoft $200 for windows 10 if he already has it and plans on not using his old pc anymore.