In case you are required to enter the product key to activate your Windows 10 system again after the installation. Wanting to do a clean install of Windows 10 on your PC device? If your device is installed with Windows 10 or upgraded from Windows 7 or Windows 8/8.1, you may need to find out your Windows 10 activation key from your computer before reinstalling system. How to check Windows 10 Product Key on your computer
