However, this is not always the case and sometimes you might not be at the computer but don’t want it to shut off the display or go into standby for a while.
If you don’t move the mouse or touch the keyboard within a specific period of time, Windows thinks you’re away and will perform the selected action to conserve power. It can do this by turning off the display when there is no activity for a given period and also do a similar thing to put the computer to sleep.
By default, Windows uses a power plan to save try and save power.
