System Restore is a recovery tool for Windows that allows you to undo certain changes to the operating system. You can think of it as an "undo" function for the core parts of Windows.
What does System Restore actually do?
This will restore certain files and settings, such as drivers, registry keys, system files, installed programs, and more, to previous versions and settings.
Restoring your computer to an earlier state only affects Windows files. It’s that kind of data that’s normally the source of problems that would prompt you to use System Restore.
For example, if strange things start happening on your computer after installing a driver, you might be able to fix the problem by restoring your system to a previous state before the driver was installed. System Restore can undo this.