Backing up installation and personal files.
The clean installation process will erase everything stored on the main hard drive, so it's a good idea to create a backup of all your important files before proceeding.
Follow steps for Clean install Windows 10.
You can click the OneDrive cloud icon in the taskbar.
Click the More option.
Click the Settings icon.
Click the Backup tab.
Pick the Manage backup option.
Select the folders that you want to file backup online.
Click the Start backup button.
Or you can connect an external drive and manually make a copy of your account files using these steps:
Open File Explorer.
Click on This device from the left pane.
Browse to the following path:
Right-click your user folder and select the Copy button.
Open the folder location on the external drive.
Right-click and select the Paste option
Now you can following these steps. You have any doubts in your mind. You can also visit the official site or you may call Microsoft support phone number. We provide the best easy solution within a short time.
View Here: How To Reinstall Windows 10 on Your PC?