HP 2230s - Compaq Business Notebook Instruction Manual

Power Management
User Guide

© Copyright 2008 Hewlett-Packard
Development Company, L.P.
Windows is a U.S. registered trademark of
Microsoft Corporation.
The information contained herein is subject
to change without notice. The only
warranties for HP products and services are
set forth in the express warranty statements
accompanying such products and services.
Nothing herein should be construed as
constituting an additional warranty. HP shall
not be liable for technical or editorial errors
or omissions contained herein.
Second Edition: July 2008
Document Part Number: 482389-002

Product notice
This user guide describes features that are common to most models. Some features may not be
available on your computer.
iii

iv Product notice

Table of contents
1 Power control and light locations
2 Shutting down the computer
3 Setting power options
Using power-saving states ................................................................................................................... 4
Initiating and exiting Sleep ................................................................................................... 4
Initiating and exiting Hibernation .......................................................................................... 4
Using the battery meter ........................................................................................................................ 6
Using power plans ................................................................................................................................ 7
Viewing the current power plan ........................................................................................... 7
Selecting a different power plan .......................................................................................... 7
Customizing power plans ..................................................................................................... 7
Setting password protection on wakeup ............................................................................................... 8
4 Using battery power
Finding battery information in Help and Support ................................................................................ 10
Displaying the remaining battery charge ............................................................................................ 11
Inserting or removing the battery ........................................................................................................ 12
Charging a battery .............................................................................................................................. 13
Managing low battery levels ............................................................................................................... 14
Identifying low battery levels .............................................................................................. 14
Resolving a low battery level ............................................................................................. 15
Resolving a low battery level when external power is available ........................ 15
Resolving a low battery level when a charged battery is available ................... 15
Resolving a low battery level when no power source is available ..................... 15
Resolving a low battery level when the computer cannot exit Hibernation ....... 15
Calibrating a battery ........................................................................................................................... 16
Step 1: Fully charge the battery ......................................................................................... 16
Step 2: Disable Hibernation and Sleep .............................................................................. 16
Step 3: Discharge the battery ............................................................................................ 17
Step 4: Fully recharge the battery ...................................................................................... 18
Step 5: Reenable Hibernation and Sleep .......................................................................... 18
Conserving battery power .................................................................................................................. 19
v

Storing a battery ................................................................................................................................. 20
Disposing of a used battery ................................................................................................................ 21
5 Using external AC power
Connecting the AC adapter ................................................................................................................ 23
Index ................................................................................................................................................................... 24
vi

1 Power control and light locations
The following illustration and table identify and describe the power control and light locations.
NOTE: Your computer may look slightly different from the illustration in this section.
Component Description
(1) Power button ●When the computer is off, press the button to turn on the
computer.
●When the computer is on, press the button to shut down the
system.
●When the computer is in the Sleep state, press the button
briefly to exit Sleep.
●When the computer is in Hibernation, press the button briefly
to exit Hibernation.
If the computer has stopped responding and Windows® shutdown
procedures are ineffective, press and hold the power button for at
least 5 seconds to turn off the computer.
To learn more about your power settings, select Start >Control
Panel >System and Maintenance >Power Options.
1

Component Description
(2) Power light ●On: The computer is on.
●Blinking: The computer is in the Sleep state.
●Blinking rapidly: An AC adapter with a higher power rating
should be connected.
●Off: The computer is off or in Hibernation.
(3) fn+f5 Initiates Sleep.
Component Description
Battery light ●Amber: A battery is charging.
●Turquoise: A battery is close to full charge capacity.
●Blinking amber: A battery that is the only available power source
has reached a low battery level. When the battery reaches a critical
battery level, the battery light begins blinking rapidly.
●Off: If the computer is plugged into an external power source, the
light turns off when all batteries in the computer are fully charged.
If the computer is not plugged into an external power source, the
light stays off until the battery reaches a low battery level.
2 Chapter 1 Power control and light locations

2 Shutting down the computer
CAUTION: Unsaved information will be lost when the computer is shut down.
The Shut Down command closes all open programs, including the operating system, and then turns off
the display and computer.
Shut down the computer under any of the following conditions:
●When you need to replace the battery or access components inside the computer
●When you are connecting an external hardware device that does not connect to a USB port
●When the computer will be unused and disconnected from external power for an extended period
To shut down the computer, follow these steps:
NOTE: If the computer is in the Sleep state or in Hibernation, you must first exit Sleep or Hibernation
before shutdown is possible.
1. Save your work and close all open programs.
2. Click Start, and then click the arrow next to the Lock button.
3. Click Shut Down.
If the computer is unresponsive and you are unable to use the preceding shutdown procedures, try the
following emergency procedures in the sequence provided:
●Press and hold the power button for at least 5 seconds.
●Disconnect the computer from external power and remove the battery.
3

3 Setting power options
Using power-saving states
The computer has two power-saving states enabled at the factory: Sleep and Hibernation.
When Sleep is initiated, the power light blinks and the screen clears. Your work is saved to memory,
letting you exit Sleep faster than exiting Hibernation. If the computer is in the Sleep state for an extended
period or if the battery reaches a critical battery level while in the Sleep state, the computer initiates
Hibernation.
When Hibernation is initiated, your work is saved to a hibernation file on the hard drive and the computer
turns off.
CAUTION: To prevent possible audio and video degradation, loss of audio or video playback
functionality, or loss of information, do not initiate Sleep or Hibernation while reading from or writing to
a disc or an external media card.
Initiating and exiting Sleep
The system is set at the factory to initiate Sleep after 15 minutes of inactivity when running on battery
power and 30 minutes of inactivity when running on external power.
Power settings and timeouts can be changed using Power Options in Windows® Control Panel.
With the computer on, you can initiate Sleep in any of the following ways:
●Press fn+f5.
●Click Start, click the arrow next to the Lock button, and then click Sleep.
To exit Sleep:
▲Press the power button briefly.
When the computer exits Sleep, the power light turns on and your work returns to the screen where
you stopped working.
NOTE: If you have set a password to be required when the computer exits Sleep, you must enter your
Windows password before your work will return to the screen.
Initiating and exiting Hibernation
The system is set at the factory to initiate Hibernation after 1,080 minutes (18 hours) of inactivity when
running on battery power, 1,080 minutes (18 hours) of inactivity when running on external power, or
when the battery reaches a critical battery level.
4 Chapter 3 Setting power options

Power settings and timeouts can be changed using Power Options in Windows Control Panel.
To initiate Hibernation:
1. Click Start, and then click the arrow next to the Lock button.
2. Click Hibernate.
To exit Hibernation:
▲Press the power button briefly.
The power light turns on and your work returns to the screen where you stopped working.
NOTE: If you have set a password to be required when the computer exits Hibernation, you must enter
your Windows password before your work will return to the screen.
Using power-saving states 5

Using the battery meter
The battery meter is located in the notification area, at the far right of the taskbar. The battery meter
allows you to quickly access power settings, view remaining battery charge, and select a different power
plan.
●To display the percentage of remaining battery charge and the current power plan, move the pointer
over the battery meter icon.
●To access Power Options, or to change the power plan, click the battery meter icon and select an
item from the list.
Different battery meter icons indicate whether the computer is running on battery or external power. The
icon also displays a message if the battery has reached a critical battery level.
To hide or display the battery meter icon:
1. Right-click the taskbar, and then click Properties.
2. Click the Notification Area tab.
3. Under System icons, clear the Power check box to hide the battery meter icon, or select the
Power check box to display the battery meter icon.
4. Click OK.
6 Chapter 3 Setting power options

Using power plans
A power plan is a collection of system settings that manages how the computer uses power. Power
plans can help you conserve power or maximize performance.
You can change power plan settings or create your own power plan.
Viewing the current power plan
▲Move the pointer over the battery meter icon in the notification area, at the far right of the taskbar.
– or –
Select Start >Control Panel >System and Maintenance >Power Options.
Selecting a different power plan
▲Click the battery meter icon in the notification area, and then select a power plan from the list.
– or –
Select Start >Control Panel >System and Maintenance >Power Options, and then select a
power plan from the list.
Customizing power plans
1. Click the battery meter icon in the notification area and then click More power options.
– or –
Select Start >Control Panel >System and Maintenance >Power Options.
2. Select a power plan, and then click Change plan settings.
3. Change the Turn off the display and Put the computer to sleep timeout settings, as needed.
4. To change additional settings, click Change advanced power settings and make your changes.
Using power plans 7

Setting password protection on wakeup
To set the computer to prompt for a password when the computer exits Sleep or Hibernation, follow
these steps:
1. Select Start >Control Panel >System and Maintenance >Power Options.
2. In the left pane, click Require a password on wakeup.
3. Click Change Settings that are currently unavailable.
NOTE: If prompted by User Account Control, click Continue.
4. Click Require a password (recommended).
NOTE: If you need to create a user account password or change your current user account
password, click Create or change your user account password, and then follow the on-screen
instructions. If not, go to step 5.
5. Click Save changes.
8 Chapter 3 Setting power options

4 Using battery power
When a charged battery is in the computer and the computer is not plugged into external power, the
computer runs on battery power. When the computer is plugged into external AC power, the computer
runs on AC power.
If the computer contains a charged battery and is running on external AC power supplied through the
AC adapter, the computer switches to battery power if the AC adapter is disconnected from the
computer.
NOTE: The display brightness is decreased to save battery life when you disconnect AC power. To
increase display brightness, use the fn+f8 hotkey or reconnect the AC adapter.
You can keep a battery in the computer or in storage, depending on how you work. Keeping the battery
in the computer whenever the computer is plugged into AC power charges the battery and also protects
your work in case of a power outage. However, a battery in the computer slowly discharges when the
computer is off and unplugged from external power.
WARNING! To reduce potential safety issues, use only the battery provided with the computer, a
replacement battery provided by HP, or a compatible battery purchased from HP.
Computer battery life varies, depending on power management settings, programs running on the
computer, display brightness, external devices connected to the computer, and other factors.
9

Finding battery information in Help and Support
The Battery information section of the Help and Support Learning Center provides the following tools
and information:
●Battery Check tool to test battery performance
●Information on calibration, power management, and proper care and storage to maximize battery
life
●Information on battery types, specifications, life cycles, and capacity
To access Battery information:
▲Select Start >Help and Support >Learning Center >Battery information.
10 Chapter 4 Using battery power

Displaying the remaining battery charge
▲Move the pointer over the battery meter icon in the notification area, at the far right of the taskbar.
– or –
View the estimated number of minutes of battery charge remaining in Windows Mobility Center:
▲Click the battery meter icon, and then click Windows Mobility Center.
– or –
Select Start >Control Panel >Mobile PC >Windows Mobility Center.
The time shown indicates the approximate running time remaining on the battery if the battery
continues to provide power at the current level. For example, the time remaining will decrease
when a DVD is playing and will increase when a DVD stops playing.
Displaying the remaining battery charge 11

Inserting or removing the battery
CAUTION: Removing a battery that is the sole power source can cause loss of information. To prevent
loss of information, initiate Hibernation or shut down the computer through Windows before removing
the battery.
To insert the battery:
1. Turn the computer upside down on a flat surface, with the battery bay toward you.
2. Insert the battery into the battery bay (1) until it is seated.
The battery release latch (2) automatically locks the battery into place.
To remove the battery:
1. Turn the computer upside down on a flat surface, with the battery bay toward you.
2. Slide the battery release latch (1) to release the battery.
3. Remove the battery (2).
12 Chapter 4 Using battery power

Charging a battery
WARNING! Do not charge the computer battery while you are onboard aircraft.
The battery charges whenever the computer is plugged into external power through an AC adapter, an
optional power adapter, an optional expansion product, or an optional docking device.
The battery charges whether the computer is off or in use, but it charges faster when the computer is
off.
Charging may take longer if a battery is new, has been unused for 2 weeks or more, or is much warmer
or cooler than room temperature.
To prolong battery life and optimize the accuracy of battery charge displays, follow these
recommendations:
●If you are charging a new battery, charge it fully before turning on the computer.
●Charge the battery until the battery light turns off.
NOTE: If the computer is on while the battery is charging, the battery meter in the notification
area may show 100 percent charge before the battery is fully charged.
●Allow the battery to discharge below 5 percent of a full charge through normal use before charging
it.
●If the battery has been unused for one month or more, calibrate the battery instead of simply
charging it.
The battery light displays charge status:
●Amber: A battery is charging.
●Turquoise: A battery is close to full charge capacity.
●Blinking amber: A battery that is the only available power source has reached a low battery level.
When the battery reaches a critical battery level, the battery light begins blinking rapidly.
●Off: If the computer is plugged into an external power source, the light turns off when all batteries
in the computer are fully charged. If the computer is not plugged into an external power source,
the light stays off until the battery reaches a low battery level.
Charging a battery 13

Managing low battery levels
The information in this section describes the alerts and system responses set at the factory. Some low-
battery alerts and system responses can be changed using Power Options in Windows Control Panel.
Preferences set using Power Options do not affect lights.
Identifying low battery levels
When a battery that is the sole power source for the computer reaches a low battery level, the battery
light blinks.
If a low battery level is not resolved, the computer enters a critical battery level, and the battery light
begins blinking rapidly.
The computer takes the following actions for a critical battery level:
●If Hibernation is enabled and the computer is on or in the Sleep state, the computer initiates
Hibernation.
●If Hibernation is disabled and the computer is on or in the Sleep state, the computer remains briefly
in the Sleep state, and then shuts down and loses any unsaved information.
14 Chapter 4 Using battery power