Windows 10: How do you get an old product key back from a completely dead computer?

Hello,


I own a MacBook Air now for art but I'm trying to make it so it could use "Bootcamp assistant" to switch back and forth from IOS to Windows 10 so I can play PC games. I had an old Windows 10 but it's completely dead/unusable now. I had a product key with it but I'm not sure how to get it back. Or if it was possible to get a completely new one from somewhere. Or get the old one from some worker.


Is there a way to get that product key back or would I have to get a new one somehow?

:)

 

Using the current device's product key on my another device.

On old PC:
Uninstall retail product key:

1. Disable secure boot(if turned on in BIOS)
2. Boot into Windows
3. Enter slmgr /upk and wait for this to complete. This will uninstall the current product key from Windows and put it into an unlicensed state.
4. Enter slmgr /cpky and wait for this to complete. This will remove the product key from the registry if it's still there.
5. Restart
6. Wait a little while and then use the retail key on the new machine.
7. Set up secure boot(recommended)

Your old machine should go back to home, or you might need to do a clean install, I'm not sure there.

 

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.

 

How do you get of Chrome?

Hi Barry,

Thank you for posting the query on Microsoft Community.

I do appreciate your efforts and time.

I suggest you to try the steps provided below and check if it helps.

• 
  Open command prompt. (Type it in Search or Press Windows Logo Key+X. Click on Command Prompt admin).
  

• 
  Type the following 4 commands at the CMD prompt:
  
  dism /online /cleanup-image /restorehealth
  
  sfc /scannow
  
  powershell
  
  Get-AppXPackage -AllUsers |Where-Object {$_.InstallLocation -like "*SystemApps*"} | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
  

• 
  Close the CMD window.
  
• 
  Check to see if the issue is resolved. If not, restart the PC.
  
• 
  Then try uninstalling the Chrome from the Control Panel.
  

Hope this helps in resolving the issue. If the issue persists, do get back to us. We will be happy to assist you.