Windows 10: Question about Windows 10 Product Key on old PC

I just recently built a new computer and used my Windows 10 Product Key from my previous computer when installing Windows 10 on to my new PC. I've already did a factory reset on my previous PC and I plan to sell it. So what happens with my old PC when it's booted up? Will it prompt the user to install Windows 10 on to it and use a product key or what? I just want to know before I begin selling my previous PC.

submitted by /u/JeffreyS1984
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:)

 

Product key association disable on old pc

Hey,


I sold my old pc to a friend. He installed some missing parts (HDD, GPU and RAM). Then we installed Windows 10 Home 64-bit version from USB stick. I was surprised to see that windows was automatically activated after that. I did some digging and found out that it is using my product key, which i use now in my own new pc. My friend does not have his own product key, the idea was that he just uses the unactivated windows with limited features.


I uninstalled my Windows 10 product key via command prompt in friends computer (as i understand this is only local solution, if he reinstall windows or clicks the active button, it reactivates automatically with my product key) and now it says windows is not activated, but my product key is still shown with Produkey app in his pc. So far windows is still activated my own pc.


My questions:

1. Is this all i need to do?
2. How do i get rid of product key showing still with product key showing apps on my friend's computer?
3. Is there a way to get rid of association of my product key on that old pc that i sold to friend?

EDIT: I originally installed windows 10 via upgrade option from Windows 7, if that matters.

 

Windows 10 Tweaks

Pressing “Windows+Pause Break” (it’s up there next to scroll lock) opens the “System” Window.

Windows 10: In the new version of Windows, Explorer has a section called Quick Access. This includes your frequent folders and recent files. Explorer defaults to opening this page when you open a new window. If you’d rather open the usual This PC, with links to your drives and library folders, follow these steps:

• Open a new Explorer window.
• Click View in the ribbon.
• Click Options.
• Under General, next to “Open File Explorer to:” choose “This PC.”
• Click OK

credit to Lifehacker.

 

Product key association disable on old pc

It's not "your" product key. It is the generic Windows 10 product key that everyone gets when they upgrade from Windows 7/8/8.1.
Clean Windows 10 Install for Free: This is the Only Way | PCsteps.com

Scroll down to Can I Find the Windows 10 Product Key

And, BTW, using Windows 10 unactivated with the limited features violates the End Users License Agreement:
https://www.microsoft.com/en-us/Uset...10_English.htm

Your friend that has the computer now should just enter the generic Windows 10 Home product key and let it activate from the digital license stored on Microsoft Activation Servers.

This is the Windows 10 Pro Product key from an upgrade (on my computer):




this is the Windows 10 Home Product key from an upgrade (also on my computer):