6. Do one of the following:
❑ Click OK to modify the existing power scheme and close the Power Options
Properties dialog box.
❑ Click Save As to create a new power scheme.
How to Configure Advanced Power Options
To configure your computer to use advanced power options, open the Power Options
Properties dialog box and click the Advanced tab. There are two options that always
appear on the Advanced tab. If you want an icon to appear in the notification area that
displays the current power status for your computer (plugged-in or on battery power)
and provides quick power-management access, select the Always Show Icon On The
Taskbar check box. The second check box on the Advanced tab is Prompt For Pass-
word When Computer Resumes From Standby. Selecting this check box causes Win-
dows to prompt you for your Windows password when your computer comes out of
standby mode.
If you have a portable computer, you will also see a Power Buttons section on the
Advanced tab. This section allows you to configure what happens when you press the
power button on the computer, when you close the lid (thereby pressing the small but-
ton signaling that the lid is closed, and when you press the sleep button (if your com-
puter has one). Options that you can choose for each of these buttons include shutting
down the computer, sending the computer to standby mode, and having the computer
enter hibernation.
Note The Prompt For Password When Computer Resumes From Standby box will not be dis-
played if the computer does not support standby mode (this is the case with many desktop
computers).
How to Enable Hibernate Mode
Hibernate mode works in a way that is a bit different from standby mode. When a
computer enters standby mode, Windows XP turns off most of the devices in the com-
puter (including the display, hard disks, and peripherals), but keeps just enough power
flowing to keep the information in memory intact—information that includes open
windows and running programs. When you exit standby mode (typically by moving
the mouse or pressing a key), Windows is returned to the state in which you left it.
However, when a computer is in standby mode, it is still reliant on a power source. If
the power source is interrupted (for example, if the battery runs out), information in
memory is lost.
When your computer enters hibernate mode, Windows saves the information in mem-
ory (including open programs and windows) to your hard disk, and then your com-
puter shuts down. When you start the computer after it has been hibernating, Windows
returns to its previous state. Restarting to the previous state includes automatically
restarting any programs that were running when it went into hibernate mode, and it
even restores any network connections that were active at the time. The advantage of
hibernation mode over standby mode is that when a computer is in hibernation mode,
it is not reliant on a power source—the computer is completely shut down.
To configure your computer to use hibernate mode, use the Power Options Properties
dialog box. Click the Hibernate tab and select the Enable Hibernation check box. If the
Hibernate tab is unavailable, your computer does not support this mode.
Hibernation works by saving the information currently stored in your computer’s mem-
ory to hard disk. To do this, Windows creates a hibernation file on the root of your sys-
tem partition. This file changes size, depending on the amount of memory you have,
but always consumes the amount of space it will need—even if you have never hiber-
nated. Unless you plan to use hibernation, you should disable this option to save disk
space.
How to Configure Advanced Power Management
Windows XP Professional supports Advanced Power Management (APM), which
helps reduce the power consumption of your system. To configure your computer to
use APM, use the Power Options Properties dialog box. Click the APM tab and select
the Enable Advanced Power Management Support check box. If the APM tab is
unavailable, your computer is compliant with a newer standard named Advanced
Bạn đang xem 6. - MICROSOFT PRESS MCSA MCSE SELF PACED TRAINING KIT EXAM 70 270 PHẦN 2 PPSX