It's really easy: Running old screensavers in Windows 8.1

Three of my favorite Windows screensavers.

Two of my favorite screensavers in Windows Vista were Aurora and Windows Energy and later The Matrix, based on the movie, with that impressive and definitely cool introductory screen with characters flowing down the screen, like rain. These three screensavers can be found in three .scr files: Aurora.scr, ssBranded.scr and TheMatrix.scr, respectively. Installing them is quite simple: just copy these files into the C:\Windows\System32 folder. Then, right click on the desktop and select "Personalize" or go directly to Control Panel\All Control Panel Items\Personalization. You can also find more information here: Windows Vista screensavers in Windows 7 and The Matrix screensaver, a timeless classic.