To activate Windows 10, you will need a valid product key. If you purchased a retail version of Windows 10, the product key should be included with the packaging or on a label attached to the device. If you have already installed Windows 10 and are seeing an “Activate Windows” watermark on your screen, you can follow these steps to activate it:
- Click on the “Start” menu and select “Settings”
- Click on “Update & Security”
- Click on “Activation” in the left-hand menu
- Click on “Change product key”
- Enter your product key and click “Next”
- Follow the on-screen prompts to complete the activation process
If you don’t have a valid product key, you can purchase one from the Microsoft Store or from a licensed retailer. Please note that using unauthorized methods to activate Windows, such as using a fake product key or activator software, is illegal and can lead to serious issues with your computer.