Sony PCV-RS310 - Manual (Page 33)

Configuring Your System 19
Changing Power Management Settings
Power Management capability is designed to enable your computer to
reduce power or shut itself off after being idle for a specified period
of time.
1
From the Start menu, click Control Panel, select Performance and
Maintenance
, then click Power Options.
The Power Options Properties dialog box opens, with the Power
Schemes tab displayed.