– Step 1: Open the Settings app: Press the Windows key + I or click on the Start button and select the gear icon to open the Settings app. – Step 2: Go to Activation settings: In the Settings app, navigate to "Update & Security" and click on "Activation" in the left sidebar. – Step 3: Select the activation method: Click on "Troubleshoot" and then choose "I don't have a product key" option. – Step 4: Complete the activation: Follow the on-screen instructions to complete the activation process without a product key.