Windows 10: How do i make activation product key work when i try to activate?

Hello please help me on this one the problem is i'm trying to activate my computer by using my product key on my desktop that where it show the product key code and i look at it and copy and paste it i did that that didn't work another part that important is "found in the confirmation email you received after purchasing Windows, or in the box Windows came in" i don't understand that part when it say that the only thing that can happen me finding my product key is the desktop i have check and copy and paste the product key i was thinking that for real my product key for some reason that didn't

:)

 

Windows 10 product keys and activation - and the KMS angle

Changing the product key to the generic Windows 10 product key will reset activation to the standard retail channel for activation. It might just activate (if there was a previous digital license for Windows 10 for that computer established with Microsoft). Once Windows 10 is back on the retail activation channel, then more than likely changing the product key to the Windows 8 product key using the same method may work.

 

Activate windows 10 after re-installing (I have lost my product key)

I own a Lenovo T430 laptop. In 2017, I installed Windows 10 using my original Windows 7 product key. Unfortunately, I cannot find that product key anymore. I need to re-install windows 10. Will it be automatically activated after the installation, if I skip the step of asking the product key during the installation?

In my opinion, I believe that my laptop will have a digital entitlement stored on the Microsoft Activation Servers and this will not be a problem. Is that true?

If not, please suggest me a solution or a workaround.

 

oem activation key

If it is a UEFI Bios you shouldn't have to enter the key at all. If it is you will have to enter your key again and run activation. Even if you do swap boards the key will work.