HP Pavilion dv2-1200 - Entertainment Notebook... User manual

Power Management
User Guide

© Copyright 2009 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.
First Edition: September 2009
Document Part Number: 539701-001
Product notice
This user guide describes features that are
common to most models. Some features
may not be available on your computer.

Table of contents
1 Setting power options
Using power-saving states ................................................................................................................... 1
Initiating and exiting Sleep ................................................................................................... 1
Initiating and exiting Hibernation .......................................................................................... 2
Using the battery meter ........................................................................................................................ 3
Using power plans ................................................................................................................................ 4
Viewing the current power plan ........................................................................................... 4
Selecting a different power plan .......................................................................................... 4
Customizing power plans ..................................................................................................... 4
Setting password protection on wakeup ............................................................................................... 5
2 Using external AC power
Connecting the AC adapter .................................................................................................................. 7
Testing an AC adapter ......................................................................................................................... 8
3 Using battery power
Finding battery information in Help and Support ................................................................................ 10
Identifying batteries ............................................................................................................................ 11
Using Battery Check ........................................................................................................................... 12
Displaying the remaining battery charge ............................................................................................ 13
Inserting or removing the battery ........................................................................................................ 13
Charging a battery .............................................................................................................................. 15
Maximizing battery discharge time ..................................................................................................... 16
Managing low battery levels ............................................................................................................... 17
Identifying low battery levels .............................................................................................. 17
Resolving a low battery level ............................................................................................. 18
Resolving a low battery level when external power is available ........................ 18
Resolving a low battery level when a charged battery is available ................... 18
Resolving a low battery level when no power source is available ..................... 18
Resolving a low battery level when the computer cannot exit Hibernation ....... 18
Calibrating a battery ........................................................................................................................... 19
Step 1: Fully charge the battery ......................................................................................... 19
Step 2: Disable Hibernation and Sleep .............................................................................. 19
Step 3: Discharge the battery ............................................................................................ 20
Step 4: Fully recharge the battery ...................................................................................... 21
Step 5: Reenable Hibernation and Sleep .......................................................................... 21
Conserving battery power .................................................................................................................. 22
Storing a battery ................................................................................................................................. 22
Disposing of a used battery ................................................................................................................ 23
iii

Replacing the battery ......................................................................................................................... 23
4 Shutting down the computer
Index ................................................................................................................................................................... 25
iv

1 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 lights blink 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.
NOTE: You cannot initiate any type of networking connection or perform any computer functions while
the computer is in the Sleep state or in Hibernation.
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+f3.
●Slide the power switch briefly.
●Close the display.
●Click Start, click the arrow next to the Shut down button, and then click Sleep.
You can exit Sleep in any of the following ways:
●Slide the power switch briefly.
●If the display is closed, open the display.
●Press a key on the keyboard or button on the remote control (select models only).
●Activate the TouchPad.
Using power-saving states 1

When the computer exits Sleep, the power lights turn on and your work returns to the screen where you
stopped working.
NOTE: If you have set a password to be required on wakeup, 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.
Power settings and timeouts can be changed using Power Options in Windows Control Panel.
To initiate Hibernation:
▲Click Start, click the arrow next to the Shut down button, and then click Hibernate.
To exit Hibernation:
▲Slide the power switch briefly.
The power lights turn on and your work returns to the screen where you stopped working.
NOTE: If you have set a password to be required on wakeup, you must enter your Windows password
before your work will return to the screen.
2 Chapter 1 Setting power options

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 low battery level, critical battery level, or reserve
battery level.
To hide or display the battery meter icon:
1. Right-click the Show hidden icons icon (the arrow at the left side of the notification area).
2. Click Customize notification icons.
3. Under Behaviors, select Show icon and notifications for the Power icon.
4. Click OK.
Using the battery meter 3

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
▲Click the battery meter icon in the notification area, at the far right of the taskbar.
– or –
Select Start >Control Panel >System and Security >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 Security >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 Security >Power Options.
2. Select a power plan, and then click Change plan settings.
3. Change the settings as needed.
4. To change additional settings, click Change advanced power settings and make your changes.
4 Chapter 1 Setting power options

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 Security >Power Options.
2. In the left pane, click Require a password on wakeup.
3. Click Change Settings that are currently unavailable.
4. Click Require a password (recommended).
5. Click Save changes.
Setting password protection on wakeup 5

2 Using external AC power
External AC power is supplied through one of the following devices:
WARNING! To reduce potential safety issues, use only the AC adapter provided with the computer,
a replacement AC adapter provided by HP, or a compatible AC adapter purchased from HP.
●Approved AC adapter
●Optional docking device or expansion product
Connect the computer to external AC power under any of the following conditions:
WARNING! Do not charge the computer battery while you are onboard aircraft.
●When you are charging or calibrating a battery
●When you are installing or modifying system software
●When you are writing information to a CD or DVD
When you connect the computer to external AC power, the following events occur:
●The battery begins to charge.
●If the computer is turned on, the battery meter icon in the notification area changes appearance.
When you disconnect external AC power, the following events occur:
●The computer switches to battery power.
●The display brightness is automatically decreased to save battery life. To increase display
brightness, press the fn+f2 hotkey or reconnect the AC adapter.
6 Chapter 2 Using external AC power