Windows 10: How to untie pc from Windows 10 license on activation server

Hi!

I have a retail Windows 10 license I want to transfer to my new pc. How can I untie it from my previous pc? I uninstalled the key by using slmgr /upk -command. It uninstalled succesfully but when I formatted and re-installed Windows on my old pc it just took the key again from the activation server. How can I permanently block this from happening? I'm going to sell my old pc in the future.

:)

 

How to activate SCCM server license

The SCCM server is already installed. And I am to activate the license but I never had experience.

Could you please provide step by step procedure to activate SCCM server license?

 

DOWNLOAD WINDOWS 10 NOW - Upgrade and ISO direct from microsoft

this search might help you https://www.google.com.au/webhp?sou...o+to+get+it+activated+windows+10+blocked+keys

From http://windows.microsoft.com/en-us/windows-10/why-activate-windows-10

If you upgraded to Windows 10 for free and ended up in a non-activated state, try following these steps:

• Go to Start
  
  , then select Settings > Update & security > Activation.
• Select Go to Store, and check to see if a valid license is available for your device. If a license isn't available, you'll need to buy Windows from the Store.
  
  Note
  • This only applies if you haven't made changes to the hardware for your device.

or you could hack it with a crack but please note this is always risky and you don't know what's in the hack

 

DOWNLOAD WINDOWS 10 NOW - Upgrade and ISO direct from microsoft

Click to expand... Yeah I went to that site, why do I need to buy a key?
I won't buy a key, stupid.

I'll revert back to windows 7 then.

When I still was on windows 7, about a year ago I added 4GB extra ram which is a total of 8GB now,
is that causing the problem?