How to use Win7 system restore function

How to use Win7 system restore function?
Windows7 controls have several sources, like traditional desktop application development or web development, there are default controls and third-party controls released by third-party developers. In general, if you are not an overly complex interface layout, using the default controls is sufficient.
Below, let's take a look at how to retrieve lost files under the win7 system.
1, first, click on the computer on the desktop, pop up the computer box, select the Central System Properties option, and then click the system protection option on the left.
2, select the disk you want to open the protection, you can open all, or you can open the individual disk, here take the D disk as an example, select the D disk, click the lower configuration option, select the option to restore only the previous version of the file, and Adjust the maximum usage and press OK to close.
3, click on the create option, create a restore point up to the current, and enter the backup name, OK.
4, open the computer, right click on the D drive letter, select properties, restore the previous version, you will find the backup version that can be restored.