Windows 10: Identifying the correct product key

I'm about to upgrade my computer for the first time since Windows 10 came out, and it is a substantial upgrade (including the motherboard.) I have four computers in the house running Windows 10. Two of them use upgrade licenses from Windows 7, two have retail copies purchased from Amazon. My Amazon account has three keys: my two, plus one I purchased on behalf of a friend when I was setting up his new system.

I need to find out which product key is associated with this computer. It could be any of the three listed on my Amazon account (one of which is not actually mine), or (potentially) it could be one of the upgrade licenses and I'd need to buy a new copy of Windows with my upgrade.

How in the world do I figure out which one is on one specific PC?

:)

 

Where is my Product Key if I want to re-install?


Like davidhk said. But if you really want to see your windows key, I would suggest Belarc advisor. It will give you some useful information about your system, product keys of your software is among them (not only Microsoft, you will have listed most of your keys).

 

Product key

Hi Megan,

A product key is used when activating a software.
To help us determine the appropriate troubleshooting steps that can resolve your concern, we'd like to ask the following questions:

• What product are you trying to activate?
• Are you looking for the product key to activate your Office application?
• Which version of Office are you trying to activate? To check this, you can perform the steps posted on this
  link.
• Are you looking for the product key to activate your Windows?

We look forward to your response.

 

Windows 10 not activating from product key

Hi,

The error 0xc004f050 usually means that the product key that you are using is invalid. Product key is key sensitive, we suggest making sure that you type all the correct letters of the product key from the email that you've received.

Furthermore, if all letters are typed correctly and issue still persists, we suggest running the
activation troubleshooter of Windows that can help in identifying and providing fixes for the issue.

Don't hesitate to update us with the result.