To create a restore point on windows

If you are new to windows or want to know how to create restore points, this is how.

 windows 7

1.  Open System by clicking the Start button ,
2.  right-clicking Computer(T'HIS PC), and then clicking Properties.
3. In the left pane, click System protection. ...
4. Click the System Protection tab, and then click Create.
5. In the System Protection dialog box, type a description, and then click Create

windows 8

first, go to start menu navigate and click on  File Explorer or you can simply open a folder. once the folder window is opened, locate 'THIS PC' (if you have not yet created Amin account the default name is 'this pc'  but if you have, it appears as the admin name.) on the left panel of the folder window you opened then continue from the above step (2).