42 - Power Management
•
Pressing the Power/Suspend/Resume button when your system is turned on.
•
Selecting Sleep from the Windows Shut Down menu.
•
Timing out from lack of activity.
•
Allowing the battery to reach the Dead Battery Warning condition.
System memory typically stores the files on which you are working, open application information, and
any other data required to support operations in progress. When you resume operation from Sleep, your
system will return to where it left off. You must use the Power/Suspend/Resume button to resume
operation, and there must be an adequate power source available, or your notebook will not resume.
Hibernation (Save-to-Disk) Feature
The Hibernation feature saves the contents of your notebook’s system memory to the hard drive as a part
of the Power/Suspend/Resume mode. You can enable or disable this feature.
Enable or Disable the Hibernation Feature
The default settings are enabled. To disable or enable the Hibernation feature, follow these steps:
1
From the Start menu, select Control Panel > Power Options.
2
Select Choose what the power button does or Choose what closing the lid does, then make your selection
(Do Nothing, Sleep, Hibernate, or Shut Down).
■
I
F
RUNNING
YOUR
NOTEBOOK
ON
BATTERY
POWER
,
BE
AWARE
THAT
THE
BATTERY
CONTINUES
TO
DISCHARGE
WHILE
YOUR
NOTEBOOK
IS
IN
S
LEEP
MODE
,
THOUGH
NOT
AS
FAST
AS
WHEN
FULLY
OPERATIONAL
.
■
D
ISABLING
THE
P
OWER
/S
USPEND
/R
ESUME
BUTTON
PREVENTS
IT
FROM
BEING
USED
TO
PUT
THE
NOTEBOOK
INTO
S
LEEP
OR
H
IBERNATION
(S
AVE
-
TO
-D
ISK
)
MODE
. T
HE
BUTTON
RESUME
FUNCTION
CAN
’
T
BE
DISABLED
.
■
I
F
YOUR
NOTEBOOK
IS
ACTIVELY
ACCESSING
INFORMATION
WHEN
YOU
ENTER
THE
S
LEEP
OR
H
IBERNATION
MODE
,
CHANGES
TO
OPEN
FILES
ARE
NOT
LOST
. T
HE
FILES
ARE
LEFT
OPEN
AND
MEMORY
IS
KEPT
ACTIVE
DURING
S
LEEP
MODE
OR
THE
MEMORY
IS
TRANSFERRED
TO
THE
INTERNAL
HARD
DRIVE
DURING
H
IBERNATION
MODE
.
T
HE
MAIN
ADVANTAGE
OF
USING
H
IBERNATION
(S
AVE
-
TO
-D
ISK
)
IS
THAT
POWER
IS
NOT
REQUIRED
TO
MAINTAIN
YOUR
DATA
. T
HIS
IS
PARTICULARLY
IMPORTANT
IF
YOU
WILL
BE
LEAVING
YOUR
NOTEBOOK
IN
A
SUSPENDED
STATE
FOR
A
PROLONGED
PERIOD
OF
TIME
. T
HE
DRAWBACK
OF
USING
H
IBERNATION
MODE
IS
THAT
IT
LENGTHENS
THE
POWER
DOWN
AND
POWER
UP
SEQUENCES
AND
RESETS
PERIPHERAL
DEVICES
.
