A screen cover temporarily protects the screen of flat panel monitors. The screen cover generally includes a planar screen shield, which may be positioned in front of the monitor screen, and a plurality of elongated retention arms that are moveable between releasing and secured positions, which engage a rear surface of the monitor. The retention arms may include one or more articulating joints that employ springs to bias the retention arms toward a secured position. Some of the retention arms may extend from corner covers that removably receive corner portions of the shield. Springs may be slidably coupled with the corner covers to removably secure the corner covers with the shield under tension.