Windows 10: How do I find my Key for a Free upgrade i got years back :

I had windows 7 pro, got the free upgrade years back .. recently upgraded my computer and never got a serial key.. so it says my Version if not activated.. How do i reactivate or get my serial key? So I bought another Windows 10 pro, but would like to have my other one for a future build :

:)

 

It's beginning to look a lot like Christmas (& Upgrade!)

Dear Santa,

I want to upgrade my primary PC this year, my MB/CPU is almost 5 years old now, and I've got the upgrade itch.

It's going to be built around an unlocked Ivy Bridge CPU, namely the 3770k

But first, I've got a few questions for you:

• What chipsets support that CPU? I think the X79 and X77?
• Is the 3770k going to be replaced with a better model, better stepping, etc in 2012 or early 2013?

Oh and is the world going to end in Dec 2012?

Thx,
Little Johnny

 

preparing to upgrade


You can try following this guide. I suggest either step 4 or step 7.

 

Can't upgrade from Windows 10 Home to Pro

Hi Bill,

Thank you for posting your query in Microsoft Community. We apologize for the inconvenience caused and will assist you in the best possible ways.

I suggest you to download and create an installation media for Windows 10 Pro form the link provided below:

Download Windows 10

After the installation media is created, suggest you to upgrade to Windows 10 Pro from the installation media. When the upgrade asks for product key, enter the product key purchased for Windows 10 Pro. If it does not accept, suggest you to skip the activation
step. After the Operating System is installed, suggest you to activate by phone by following the steps below:

• Press “Windows key + R” and type “slui 4” and press Enter.
• Select the Region from the list and click Next.
• Call the Toll-Free number provided on top and can activate via phone.

Hope this helps. Keep us posted on the status for further assistance.