How does hardware works according to software?

H

hb2901

Geek Trainee
I was wondering how my laptop's moniter turns of after 10 seconds if I set "turn of display after 10 seconds in control panel power options".
So, we all know that operating system controls everything in a computer but how simple click in settings in operating system actually turns off power supply to the screen.
 
For a crude, basic understanding:
-The hardware must support a certain function
-There are several layers of an OS, from the GUI or command line down directly to the hardware itself.
-Based on the functionality required, appropriate programming on the layer(s) is done.

That's quick, dirty and very simple understanding as best I can do with my limited knowledge in coding.
 
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