System Restore is a Windows feature that can help fix certain types of crashes and other computer problems. Here’s how it works, how to set it up, and how to use it when things go awry.
We’re going to be using Windows 10 in this article, but System Restore has been around a long time–and works pretty much the same way in each version of Windows. The instructions here are good for Windows 7, 8, and 10, and you’ll encounter only minor differences throughout the process.
https://www.howtogeek.com/howto/windows-vista/using-windows-vista-system-restore/
To restore to an earlier point, follow these steps. Save all your files. ... From the Start button menu, choose All Programs→Accessories→System Tools→System Restore. In Windows Vista, click the Continue button or type the administrator's password. ... Click the Next button. ... Choose the proper restore date.