Download Directly the windows 10 media Manager from the Microsoft site
You can download the windows 10 pro ISO file directly from Microsoft website : https://www.microsoft.com/en-us/software-download/windows10
You have to choose “Download tool Now”
The MediaCreationTool link: http://go.microsoft.com/fwlink
This tool will help you to create the installation support on dvd or on usb key, you will have only to follow the instructions Make sure you choose the version “Windows 10” and not the version “Windows 10 N”
NB: For the upgrade from windows 7 , 8 or windows 10 home you will need an upgrade key : Click here
Warning : If you have a version of windows installed on your pc, which is not the pro version “Like home for example”, do not upgrade windows 10, choose “Create installation media for another pc”
NB: You can also if you need to use this link to download directly the ISO file of the version windows 10 pro: https://www.microsoft.com/fr-fr/software-download/windows10ISO/
Next step :
How to: Install Windows 10/8.1/7 from a DVD or USB drive
How to install windows with a usb key?
Creating a Windows 7 Pro Usb installation key with rufus: