Windows 10: Buying a key to validate Windows WITHOUT installing

Hello.

Is there any way to purchase a key from the Windows Store and apply it to my existing install so I don´t have to reinstall?

Reason:
Bought an assembled PC with Windows pre-installed.
Built a new computer a few years later and moved the main HDD over to the new computer.
Been avoiding doing a full reinstall because it takes me forever to set all my programs and settings back the way I like them.
Can't see any options in the store to buy an activation key that I can apply.

:)

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

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.

 

Windows 8 Clubhouse

I don't think that tool asks for a key if you are running the version of Windows you are trying to download the ISO for.