You can upgrade the operating system from Windows 8.1 or Windows 7 to Windows 10 without losing your folders and losing everything on the hard drive (without a clean installation) using the option “upgrade”.
You can also perform the upgrade process using the Microsoft Media Creation Tool.
Be aware that it is not always possible to keep all of your existing apps. Besides, make sure to backup all of your personal files before any installation process.
This guide illustrates how to upgrade to Windows 10.
After receiving your order, click on the download link to start the download phase of Windows 10:
Click on Download Tool Now
Once it is downloaded, double click on it to run the Media Creation Tool. A window will appear « Do you want to allow this application to make changes to your device » . Click on "Yes".
Accept the terms and conditions of the applicable license agreement.
Check the first option “ Upgrade this PC now” then click on “Next”
Choose "Keep personal files and apps"option, then install.
Done, your operating system is now upgraded to Windows 10.