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Normally, when you need to reinstall Windows, you probably use a USB drive or DVD containing the installer. However, for some reason you may not have any supporting device on hand, or simply your USB port or disc drive may be broken! This is when WinToHDD shows its strength and becomes the best solution for you.
WinToHDD is a product from Hasleo Software. This software boots the Windows installation ISO right from the hard drive so you can do a clean reinstall of the operating system easily and conveniently. If you’re interested, the following guide is for you.
Step 1: First, download the ISO file for the operating system you want to install and save it to drive D or drive E. Next, download and install WinToHDD below
Download WintoHDD
WinToHDD homepage (Free edition)
Step 2: This is the software’s interface, which includes the following functions
- Reinstall Windows: clean reinstall of Windows
- New Installation: clean install of Windows on another partition
- System Clone: creates a copy of the system partition; use it when you want to move the operating system from one hard drive to another
- Multi-Installation USB: Create a USB drive that installs multiple operating systems

In this article I’ll show you how to do a clean install of Windows, so I’ll choose Reinstall Windows
Step 3: Here, select the Windows .IOS file you want to install. Note: keep the .IOS file somewhere other than drive C. Then choose the Windows edition you want to install and click Next

Step 4: Next, WinToHDD automatically selects the correct system partition to install to. If you want to choose a different partition, click it. Then click Next, then a prompt will ask you to allow WinToHDD to download and install WinPE. Click Yes to confirm, because this step is necessary for WinToHDD to work.
When WinPE has been added to the boot menu, you’ll be asked whether to allow WinToHDD to restart the computer and install Windows. If you agree, click Yes to let WinToHDD proceed.

Note that you need to back up any important data before doing this step, because on restart WinToHDD will get to work and the Windows Setup screen will appear.
After the computer restarts, WinToHDD extracts and launches the setup contents from the ISO you selected. The Windows Setup screen then appears; just complete the installation and you’re done