Method 1: Perform clean install of Windows 10 from ISO image

Here is how to clean install Windows 10 from ISO image file without having to create bootable USB or DVD.

Step 1: Download ISO install file on your email

Step 2: On your Windows 10 PC, where you want to perform clean install of Windows 10, back up all data as we are going to clean install Windows 10 by removing installed programs and personal files. So it’s a good idea to backup everything using a good backup software.

Step 3: Right-click on the Windows 10 ISO image file, and then click Mount option to mount the ISO image.

Step 4: Open up This PC, and then open up the newly mounted drive (containing Windows 10 installation files) by right-clicking on the drive and then clicking Open in new window.

Step 5: Double-click on the Setup.exe file.

Step 6: When you see the following screen, select the first option labelled Download and install updates (recommended), or you can also select the option titled Not right now, as we can always download and install updates after clean installing Windows 10.

If you have selected Download and install updates option, the setup will check for available updates and download them if available.

Step 7: Next is the user agreement screen where you need to click Accept button to accept the license terms to install and use Windows 10.

Step 8: Once again, the setup might start looking for updates and download them.

Step 9: Once everything is ready, you will see Ready to install screen.

Step 10: Here, select Keep nothing if you want to perform a clean install of Windows 10 by removing all installed programs and data. We have selected Keep personal files and apps as we don’t want to lose installed apps and important data.

And if you want to keep you data, please select Keep personal files option by clicking Change what to keep link.

Step 11: Finally, click Install button to begin installing Windows 10.

Note that although the installation screen shows “Upgrading” message, it’s actually clean installing.

Method 2: Tutorial to clean Install Windows with free Windows deployment tool

Here is how to clean install Windows 10 from ISO image file without having to create bootable USB or DVD. Using WintoHDD tool

Step 1: Download ISO install file on your email

Step 2: Download free Windows deployment tool: https://www.easyuefi.com/wintohdd/

Step 3: On your Windows 10 PC, where you want to perform clean install of Windows 10, back up all data as we are going to clean install Windows 10 by removing installed programs and personal files. So it’s a good idea to backup everything using a good backup software.

Step 4: Run WinToHDD, then click the  button.

Step 5: Please use the following guidelines to prepare your installation source.

• Installing from an ISO/WIM/ESD/SWM/VHD/VHDX File: Click the  button, then click the  button and select the ISO/WIM/ESD/SWM/VHD/VHDX file from the open dialog box.
• Installing from a DVD drive: Insert the Windows installation CD/DVD into your CD/DVD drive. Once the CD/DVD is being detected in Windows, then click  button and select the CD/DVD drive in the drop-down list. If your CD/DVD drive is not correctly recognized by WinToHDD, you need to click the  button for the program to recognize the CD/DVD drive.

Step 6: WinToHDD scans for and lists installable operating systems. If you see the edition of Windows you want to install, select it, then click “Next”.

Step 7: Select the destination disk in the drop-down list, a pop-up will appear asking you if you want to format it to continue, select the partition scheme you want to use and click “Yes” to format it. If you choose “Keep the existing partition scheme”, you need to manually prepare the partitions on the disk before this step, and here is the user guide on how to manually prepare partitions for the destination disk.

Step 8: Select the boot partition and system partition from the partition list, the selected partitions will be marked as red.

Step 9: Click “Next”. After clicking “Next”, WinToHDD begins installing Windows.

Step 10: It takes some time to install. After installation restart the computer and change BIOS to boot from your hard disk drive.

Step 11: Windows installation starts up and you have to complete all the installation steps. You will have to boot from your hard disk drive if the Windows Installation restarts the computer.

Follow these simple steps, you can install Windows onto disks other than the one where your Windows operating system is installed with free Windows deployment tool WinToHDD easily.

Method 3: Using the tool to create installation media (USB flash drive, DVD, or ISO file) to install Windows 10 on a different PC