System Protection, also known as System Restore, isn't a new feature of Windows 10. This technology was introduced in 2000 with Windows Millenium Edition. It allows you to roll back the installed operating system to the previous state. System Restore creates restore points which keep a complete state of Registry settings, drivers and various system files. The user can roll back the operating system to one of the restore points if Windows 10 becomes unstable or unbootable.