Windows 10: Window 10 Pro Key Not working

I have purchased a new laptop with preinstalled win 10 home and want to use the Winpro 10, I had in last machine. Key is with me, but its showing used in another PC.

Please help me to activate the same.

:)

 

windows 10 key

Thanks but I don't want to do any decrypting. I want to download a Win 10 ISO from Microsoft and install it using my Win 8 key. No other steps required. Is that possible?

 

windows 10 key

I just did a deployment last night with a fresh 10 install using the newest ISO and a 7 Pro key, worked like a charm. Glad yours worked for you as well. *Toast :toast:

 

Installing Windows 10 using Windows 7 key

Nope, you need to install Windows 10 first and make sure the Windows 7 key is transferred to your Windows account after you've installed Windows 10 (not quite sure how that works). I missed the last step and I could not activate Windows 10 after a re-install... Microsoft seem to have done everything they can to make it a PITA. Also, it's technically too late to do this now anyhow, as the upgrade offer has expired. But KMSPico works quite well...

As for getting rid of Windows, delete the Windows folder.