To clean install Windows 10 on your system, you need to perform these tasks.
Change your BIOS settings
Create an Installation media
You should change your BIOS settings and choose the default boot device to the one you are going to use for installation. It can be a USB device or CD drive.
And then you have to create a bootable USB device for a clean installation of the window or purchase a CD drive for Windows 10. When everything is set, you should start the OC and choose the device from which you want to install the Windows. Then you need to select the Upgrade option and you need to choose to remove everything from the system and perform a clean install.
