Windows 10: Did I remove my old product key?

I had to replace my motherboard and didn't manage to activate my windows afterwards. I found some KMS activation key online and tried that, did this replace my old key or is it still salvageable?

:)

 

Remove account

I suggest you backup your personalized files first before removing the account.
To delete an account, follow these steps:

1. Press WIN + X keys and click Command Prompt (Admin) from the menu.
2. Type the following command and press Enter. Replace test with the name of your sister's account. Code:

 

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.

 

product key

Hi,

Thank you for posting your query in Microsoft Community.

Please follow the below steps to resolve this issue:

Steps:

• Press and hold Windows key + R.
• Type ‘slui 3’.
• Enter your old product key and try to change product key
• Use the new product and check if you are able to activate.

For more information please follow the link given below, this information is provided by Andre Da Costa.

http://answers.microsoft.com/en-us/insider/wiki/insider_wintp-insider_install/how-to-activate-and-resolve-common-product-key/33f31475-93b3-4d1c-812f-4b21fbd807a7

Please get back to us if you are still facing this problem.

Hope the information helps to fix the issue, if you have any further queries, feel free to post. We are here to assist you.

Regards,

Guru Kiran