In some conditions, we need/want to close the monitor's power immediately (lowering the screen's brightness is meaningless), rather than waiting for the computer to enter its power saving mode and then do this for you. Note that, empty or pure black screen saver can not achieve this effect, because any screensaver obviously becomes very bright in dark environments.

Turn Off the LCD is a small and practical freeware, designed for turning off display quickly, applicable to both CRT and LCD/LED monitors. No installation required. The applet is especially convenient for laptop without power off button for monitor.

Usually, if want to view information about your system, the common way is to check in some system optimization and similar tools, but it seems a misuse of their talent.