You are about to wipe your hard drive. Use Macrium Reflect or Clonezilla to image your current system. There is no downgrade path without a full reinstall.
When your Windows installation is verified by Xpristo, you can enjoy several benefits:
While these unofficial distribution packages claim to offer fully functional, pre-activated versions of operating systems like Windows 10, relying on tools generated by unauthorized third-party developers carries massive security, legal, and operational vulnerabilities. What is the "XPRISTO Verified" Copy?