System information

5-6 Computer Power and Power Management

COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED

Writer: Carey Gregg Saved by: Carey Gregg Saved date: 09/23/98 1:05 PM

Part Number: 316216-003 File name: Ch05.doc

You can set the battery conservation level one of two ways:

■

Setting the Battery Conservation Level with Hotkeys: Choose

a preset level of battery conservation by pressing

. If

you select None (Drain), it remains in effect until you change

it.

■

Using Power Properties: Change the default levels of battery

conservation through the Battery Conservation Settings tab in

Power Properties (click Start Æ Control Panel Æ double-click

Power Æ Power Properties). Choose a preset level or

customize your own level. The level you set remains in effect

until you change it.

Using Advanced Power Management

In Windows 95, some Windows applications require that

Advanced Power Management (APM) be enabled in order to run

effectively. APM, which is enabled by default on your computer,

automatically reduces power consumption behind the scenes,

saving power while you work. For example, APM turns off the

microprocessor between keystrokes and when your applications

are idle.

Using ACPI Power Control

Windows 98 provides ACPI (Advanced Configuration and Power

Interface), which is a system-wide approach to system and device

power control, as well as thermal management. ACPI enables the

operating system to respond to events and manage power for the

entire system and its devices. It makes the computer more

accessible by reducing boot time and allowing the computer to

wake up automatically. ACPI also incorporates power

management that reduces power consumption of the computer by

turning off the microprocessor and other components when

applications are idle or between keystrokes.

With ACPI, some Compaq power management features such as

power conservation settings in Computer Setup, battery

conservation popup windows, and initiating Hibernation will be

disabled.

For more information on ACPI functions, consult your Microsoft

Windows 98 reference guide.