I have multiple computers on my work desk and sometimes I want to shut off a monitor. Maybe I’m watching a video or playing a game with the lights down – whatever the reason, I haven’t found an easy way to blank out a monitor under Windows 7 until now.
Found this great article on howtogeek.com about disabling a monitor.
Create a Shortcut or Hotkey to Turn Off the Monitor
It uses the Nircmd.exe app to create a shortcut to disable the monitor. Very cool.