Installing Windows 11 and Windows 10 from the ISO. Use the steps below to install Windows using the Dell installation media: Insert the USB you created using the Dell Windows Recovery Image. Restart your computer and tap the F12 key on your keyboard when you see the Dell logo. The boot menu that is shown in Figure 1 [English Only] should appear. 6. Choose a download location for the Windows ISO file and click Save. 7. Be patient until the download is completed and then continue to the next step. Step 2. Extract the file from the file. 1. When the download is completed, right click at the Windows ISO fie you downloaded and choose Mount. Windows 10 21H2 upgrade tutorial using the Media Creation Tool. More info 🔺 can us.