Step 10: Here, select Keep nothing if you want to perform a clean install of Windows 10 by removing all installed programs and data. Step 9: Once everything is ready, you will see Ready to install screen. Step 8: Once again, the setup might start looking for updates and download them.

Step 7: Next is the user agreement screen where you need to click the Accept button to accept the license terms to install and use Windows 10. If you have selected Download and install updates option, the setup will check for available updates and download them if available. Step 6: When you see the following screen, select the first option labeled Download and install updates (recommended), or you can also choose the option titled Not right now, as we can always download and install updates after clean installing Windows 10. Step 5: Perform a double-click on the Setup.exe file to launch the Windows 10 Setup. Step 4: Open up This PC, and then open up the newly mounted drive (containing Windows 10 installation files) by right-clicking on the drive and then clicking Open in new window option. Step 3: Right-click on the Windows 10 ISO image file, and then click Mount option to mount the ISO image. So it’s a good idea to backup everything using the right backup solution. Step 2: On your Windows 10 PC, where you want to perform a clean install of Windows 10, back up all data as we are going to clean install Windows 10 by removing installed programs and personal files. Step 1: If you haven’t downloaded your Windows 10 ISO yet, please follow the instructions in our download Windows 10 ISO from Microsoft guide to download the ISO image file. Here is how to clean install Windows 10 from the ISO image file without having to create a bootable USB or DVD. Perform a clean install of Windows 10 from ISO image

If at all, Windows 10 is not activated after the clean install or reinstall, use the built-in activation troubleshooter to fix the issue.

However, when you clean install Windows 10 on a different PC or newly built PC, you will have to enter a valid product key. Your PC will be automatically activated after installing Windows 10 as long as you have installed the same edition of Windows 10 was activated on your current PC by using the free upgrade offer. When you are prompted to enter a product key during the product installation, click the Skip button.

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