Power

3–2 Power
Standby and hibernation
Hibernation
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CAUTION: If the configuration of the computer is changed during
hibernation, resuming from hibernation may not be possible. When the
computer is in hibernation:
■ Do not dock the computer in or undock the computer from a
docking device.
■ Do not add or remove memory modules.
■ Do not insert or remove any hard drives or optical drives.
■ Do not connect or disconnect external devices.
■ Do not insert or remove an external media card.
Hibernation saves your work to a hibernation file on the hard
drive, and then shuts down the computer. The power lights are
turned off. When you restore from hibernation, your work returns
to the screen where you left off. If a power-on password has been
set, you must enter that password to restore from hibernation.
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CAUTION: To reduce the risk of information loss, save your work
before initiating hibernation.
You can disable hibernation. However, if hibernation is disabled
and the system reaches a low-battery condition, the system will
not automatically save your work while power is on or when
standby has been initiated.
Use Power Options in Windows Control Panel to reenable
hibernation:
» Select Start > Control Panel > Performance and
Maintenance > Power Options > Hibernate tab.
Be sure that the Enable hibernation check box is selected.
To set the time interval after which the system initiates
hibernation:
1. Select Start > Control Panel > Performance and
Maintenance > Power Options > Power Schemes tab.
2. Click one of the intervals in the System hibernates list.