Another option is a utility called "PowerOff"
This will not work either.
3.2.7 Turn off monitor
This action will put monitor in standby (powersaving) mode. You need a monitor that is capable of this feature.
3.2.7 Turn on monitor
This action will turn on power to your monitor (get it out of stanby/powersaving mode). You need a monitor that is capable of this feature.
It is using the same API calls that we have already tried.
I'll tell you why this will not work.
It should run on Windows 95/98/Me/NT4.0/2000/XP
If he were running Windows 95 it would work. Windows 95 required code to both turn off and turn on the monitor. If you turned it off it would stay off till you made the call to turn it back on. But only Windows 95 works this way.
Power management in other Windows versions will automatically wake the monitor when mouse movement or keyboard activity is detected.
So if he were to use this application, it would behave the same as any attempt the rest of us has made when trying to make a tool to turn it off, because he isn't running Windows 95.
I guess Microsoft saw it as a poor decision to require both calls in Win95, and maybe there was a problem with prank programs turning off people's monitors and requiring a reboot to get them back on again. At some point during the development of their next OS, Microsoft decided there would never be a reason why you would want to type and move your mouse and still have your monitor off.
I guess they don't have any blind coders on laptops, without monitor power buttons, working for them.