Duke can't get his Windows screensaver to activate. He can preview it, but it doesn't engage on its own. Leo says that there has to be a setting in the power options that are preventing it. It may be "wake on LAN" in the BIOS that's preventing it from going to sleep. So get into the BIOS and make sure the wake on LAN is turned off. Leo also suggests checking to see if a third party screensaver is causing a conflict. R/C desktop - personalization. Windows Key + L will also turn on screen lock. That could turn on the screensaver.