Abstract: In an exemplary method, a filter driver on a computer system receives notification of an event during which a display screen on a display device of the computer system should be blank. An example of such an event is a remote management operation being performed on the computer system. The filter driver receives messages that are directed to a display driver for the display device. The filter driver receives the messages before they are received by the display driver. Some of the messages may comprise a power on message that, if received by the display driver, would cause the display screen to be powered on. The filter driver discards each power on message that is received during the event so that the display driver does not receive any power on messages during the event.