Force Black Screen in Pre-Testing Rooms
If you need to immediately darken a computer screen in a pretesting room (to calibrate a Humphrey Matrix or other visual field testing equipment), this article will allow you to activate a screensaver/blank screen on demand: How to Make Windows Start the Screensaver Immediately When Locked : 'via Blog this' Make sure you select the "Blank" screensaver in your screensaver options. Then follow the link above to "Download, install, and then open [MonitorES utility]. Go into the preferences (accessible from the system tray icon), and choose the Auto SSaver On option. Create a shortcut into your Start Button\Start-up folder to enable the utility after every startup. To activate the blank screensaver, press Ctrl+L for the lock-screen and the "Blank" screensaver will start.