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The steps that you need to take are the same when looking to access PC info, rename your PC or join a domain. So you can read those articles, or follow the simple guide from below to arrive to the setting page that you need to access.

How do I enter a new Windows 10, 8.1 product key?

Change your Windows 8.1 product key

  1. First of all, you will need to open the Charms Bar by swiping to to the top right corner or pressing Windows logo + W 2. Then, you have to choose the search button and type there ‘PC Settings‘ 3. From there, you now need to select the ‘PC and Devices‘ sub-section 4. From the ‘PC and Devices’ menu, choose the PC info section 5. Enter or change your product key here, and be careful that dashes will be added automatically. You can find the Product ID of your Windows 8.1 either on the DVD or on the email which confirms your purchase.

Change your Windows 10 product key

The steps to follow on Windows 10 are a bit different:

You can either go to the Microsoft Store and buy a genuine key or use one that you already own. As a quick reminder, if you’re not running a genuine Windows OS version, this may trigger many technical issues on your device. The safest solution to avoid them is to install a genuine Windows 10 version. This was really easy, wasn’t it? Now that you have changed your product key, you will see what is the edition of Windows that you are running and whether it is activated or not. For more information on your Windows key, you can check out the guides below:

FIX: This Product Key Cannot be Used to Install a Retail Copy of Windows How to get a cheap Windows Product Key How to Find Your Windows Product Key Full Fix: Windows 10 activation key not working

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