How to Get a Screen Saver Backby John Grossman
Whether you have accidentally changed your screen saver or another program has changed it for you, it is possible to get your favorite screen saver back. By changing a few settings in either the Windows or Mac OS X operating systems, you can change your default screen saver to any screen saver you like.
Windows Operating Systems
Right-click on your Windows desktop and choose "Properties."
Click on the "Screen Saver" tab of the "Display" window that has just opened.
Use the drop-down menu to select your preferred screen saver.
Confirm your selection by clicking on "Apply." Then, click on "OK." Your PC should now use your new default screen saver.
Mac OS X Operating System
Open the "System Preferences" application by going to the "Apple" menu and choosing "System Preferences."
Click on the "Desktop & Screen Saver" button and then click on the "Screen Saver" tab.
Click your new default screen saver from the menu in the left pane of the application.
Exit the "System Preferences" application. Your Mac will now use your new default screen saver.