Version 7.51 is an older release (circa 2012-2014) commonly used for:
to make computer configurations virtually "indestructible". By using a patented "Reboot-to-Restore" technology, it ensures that any changes made to a workstation—whether accidental, intentional, or malicious—are completely wiped away upon a simple restart. Key Features and Benefits Advanced Settings Tab - Deep Freeze Cloud Version 7