Windows 10: windows activation key for a new PC

Hi,

i have an old laptop in which i bought and activated a windows 10 product key.

i upgraded the laptop to a new PC.

when i tried to activate windows 10 on the new PC with the same product number i got an error.

so my question is: how do i use the old key on my new PC? can i recover it from somewhere?

thanks

:)

 

Windows 8.1 pro + WMC key activation

yeah, just don't forget that MCE gives you a new Windows key.... I had activation errors untill I entered the MCE key....

 

activate windows 7 oem key

There is no difference between the OEM disc and the Retail disc with Windows 7. A retail disc will accept a OEM or Retail key, and vise versa.

If the OEM Key wasn't going to work with the disc you have, it would have stopped you during the install when it first asked you for the key, not during activation.

What is likely the problem is that, since the OEM version has already been activated once, it is failing activation again. Activate it over the phone using the option given to you on the failed activation screen, and you shouldn't have a problem activating it.

 

Windows 8.1 pro + WMC key activation

This worked for me last time with a Win 8 key.

Install Windows 8.1 and enter KMS key during setup. Once in windows change product key to my Windows 8 key. Go to add features and enter my WMC add-on key. Drink a beer to a job well done.