Sony PCV-LX920 - Manual (Page 29)

Configuring Your System 17
Changing the Display's Power Management
Settings
A display that has power management capability is designed to operate
on reduced power or shut itself off after the system has been idle for a
specified period of time.
1 From the Start menu, point to Settings, Control Panel, then click
Power Options.
The Power Options Properties dialog box opens, with the Power
Schemes tab displayed.
2
Select the power scheme that is most appropriate for the way you use
your computer.
To change a power scheme, change the settings for Turn off monitor,
Turn off hard disks, System standby, and System hibernates.
The Turn off monitor option allows you to specify the period of
inactivity (in minutes) that you want to elapse before your monitor
turns off when your computer is running on AC power. The display
reactivates when you move the mouse or press a key.