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Make sure youāre up to date on any Windows Updates.
- ClickĀ UpdateĀ &Ā SecurityĀ and go toĀ ActivationĀ (see the picture below).
- Find the āChange product keyā and click it. A window requiring you to enter your product key will appear.
- Enter your product key that you received with your order, clickĀ Next, the upgrade will start, and youāll soon get a message that Windows has been upgraded.
Ā (middle icon in the left bottom corner).