Go to
Download Windows 10 and click on 'Download tool now' to download the Media Creation Tool.
When you click 'Update now' on the site you get the Update Assistant. If you have the latest version of Windows 10, currently version 1803, the Update assistant will tell you that you have the latest version installed and will only give you the option to exit.
The Media Creation Tool will load for a few minutes and present you with the End User License Agreement (EULA), click 'Accept' and it will load again for a few minutes. Next it will present you with 2 options, 'upgrade this pc now' and 'create installation media'. I recommend to choose 'create installation media'. If you have chosen 'create installation media' select the language, edition and architecture applicable for your pc. In the next screen 'Choose which media to use select 'ISO file' and select a folder where you want to save it. The next part can take a long time, please have patience. When it is finished, go to the folder where the ISO is saved, right click the ISO and select 'mount'. Select 'setup.exe' and select 'Download and install updates (recommended)'. After it has loaded you'll be presented with the EULA again, click 'Accept'. After a few screens you get the option to select what you want. By default it will say 'Install Windows 10 <your edition>' and 'Keep personal files and apps'. Changing it will provide you with 3 options
- Keep personal files and apps
- Keep personal files only
- Nothing
If you click 'Next' you will go through the last 2/3 steps all over again, I don't recommend changing the options you want as it can take a long time to get back to the options where you can select what you want.
Click 'Install', from this point the setup will install everything and reboot a couple of times. This might take an hour or 2, please do not interrupt or stop it.