Here are two simple batch files that you can use to power on and off monitor or LCD. This is very useful to turn off Kiosks during off-hours and power back on during business hours using Windows scheduler.
You can use it as you like. You can download both source and binaries.
System Requirements: x86, .NET 1.x or above, Window OS
Power Off - Turnning LCD and Monitor Off Batch File.bat
Power On - Turnning LCD and Monitor On Batch File.bat
Disclaimer: The software provided is as-is. Use it at your own risk. You are free to modify the code as you like.