Using the right mouse button, click an empty location on your desktop.
Choose "Properties" from the popup menu.
Click the "Screen Saver" tab.
Use the "Wait" control to set an appropriate delay.
Step 2 of 2: Set the Energy Saver Settings:
Now, click the "Power" button.
Set "Turn Off Monitor" to an appropriate delay, longer than the screensaver delay chosen above!
If you want to put your entire computer to sleep, choose a time using the control labelled "System Standby." Note: when your computer is in standby mode, it uses very little power, and it is essentially turned off (i.e. it can't do anything).
For extra savings, choose a time for the "Turn off hard disks" control.
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