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Compaq 383161-001 Switching Between Battery and External Power

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3–2 Hardware and Software Guide

Power

Switching Between Battery and External Power

The notebook runs on external power whenever external power

is available to the notebook. This conserves the charge in an

inserted battery pack. External power can be supplied through the

AC adapter, an optional docking device, or an optional

combination power adapter.

Because the notebook switches between battery power and

external power according to the availability of external power:

■If the notebook is running on battery power and you connect

the notebook to external power, the notebook switches to

external power.

■If the notebook is running on external power (and contains a

charged battery pack) and you disconnect the notebook from

external power, the notebook switches to battery power.

A Power Meter icon is displayed by default in the taskbar. The

Power Meter icon changes shape whenever the power source

changes between battery power and external power.

If the Power Meter icon is not displayed in your taskbar:

1. Select Start > Control Panel > Performance and

Maintenance > Power Options.

2. Select the Advanced tab.

3. Select the Always show icon on the taskbar check box.

4. Select OK.

Contents

Main Page Contents 1 Component ID 2 Keyboard and Touchpad 3Power 4 Multimedia 5 Wireless (Select Models Only) 6 Security 7 Hardware Upgrades and Replacements 8 Software Updates and Recovery and System Software A Specifications Index Component ID Top Co mpon ents (Continued) Keys 1 Page Touch Pad Power Co ntrols 1 2 Lights Wireless and Volume Buttons Antennae Front Components Lights Speakers, Jacks and Display Release Button Rear Components 1 2 Left-Side Components Ports and Jacks PC Card Slot and Button Vent and Security Cable Slot 1 2 Right-Side Components 5 6 Bottom Components Mini PCI and Memory Compartments 1 2 Bays, Battery Latch and Vents 1 2 3 4 Additional Components Hardware Optical Discs Labels Page Keyboard and Touchpad Touch Pad Identifying TouchPad Components Using the TouchPad Setting TouchPad Preferences Page Hotkeys Identifying Hotkeys Hotkey Quick Reference Using Hotkey Procedures Using Hotkeys On the Internal Keyboard Using Hotkeys on an External Keyboard Using Hotkey Commands Open Help and Support Center (fn+f1) Open Print Window (fn+f2) Open Internet Explorer (fn+f3) Switch Image (fn+f4) Initiate Standby (fn+f5) Initiate QuickLock (fn+f6) Decrease Brightness (fn+f7) Increase Brightness (fn+f8) Media Activity Hotkeys (fn+f9 through fn+f12) Display System Information (fn+esc) Keypads Using the Embedded Numeric Keypad Page Switching the Functions of Keypad Keys Using an External Numeric Keypad Turning Num Lock Mode On and Off As You Work Power Power S ourc es Selecting a Power Source Switching Between Battery and External Power Power Control and Light Locations Standby, Hibernation and Shutdown Overviews Standby Hibernation Leaving Your Work Interference with Drive Media Standby, Hibernation and Shutdown Procedures Turning the Notebook On or Off Initiating or Resuming from Standby Initiating or Restoring from Hibernation Using Emergency Shutdown Procedures Power Preferences Using Power Schemes Setting a Standby Password Setting Other Power Preferences Page Battery Pack Charging a Battery Pack Page Monitoring the Charge in a Battery Pack Obtaining Accurate Charge Reports Displaying Charge Reports Managing Low-Battery Conditions Identifying Low-Battery Conditions Resolving Low-Battery Conditions Calibrating a Battery Pack When to Calibrate How to Calibrate Charging the Battery Pack Discharging the Battery Pack Page Recharging the Battery Pack Conserving Battery Pack Power Conserving Power as You Work Selecting Power Conservation Settings Replacing a Bat tery Pack Page Page Storing a Battery Pack Disposing of a Used Battery Pack N Page Volume Controls External Audio Devices Using the Audio-Out (Headphone) Jac k Using the Audio-In (Microphone) Jack External Video Devices Connecting an S-Video Device Connecting the Audio Connecting the Video Displaying a Video Image CD and DVD Procedures Using Media Activity Hotkeys Protecting Playback Protecting a CD or DVD Write Process Multimedia Software Observing the Copyright Warning Installing Software Enabling AutoPlay Changing DVD Region Settings Using the Operating System Using WinDVD Using Other DVD Software Wireless (Select Models Only) Wireless Features Wireless Controls 802.11 Wireless Devices (Select Models Only) Page Setting Up a WLAN in Your Home Connecting to a WLAN in Your Home Connecting to a Public WLAN Using Wireless Security Features Identifying an 802.11 Wireless Device Troubleshooting Devices Bluetooth Wireless Devices (Select Models Only) Page Wireless Device Power States Page Turnin g On the Devices on your notebook, you must turn them on before you shut down or restart the notebook. If And Then Turning Off and Disabling the Devices If And Then Security Security Features Page QuickLock Setup Utility and Windows Passwords Page Coordinating Passwords Choosing a Password Setup Utility Administrator Password Setting an Administrator Password Entering an Administrator Password Setup Utility Power-On Password Setting a Power-On Password Entering a Power-On Password Setup Utility Device Security Antivirus Software Critical Security Updates for Windows XP Firewall Software Optional Security Cable Hardware Upgrades and Replacements Connecting a USB Device Connecting a 1394 Device Connecting a Communication Device Digital Memory Cards Page Inserting a Digital Memory Card Removing a Digital Memory Card PC Cards Inserting a PC Card Stopping or Removing a PC Card Page Drives Caring for Drives Replacing the Internal Hard Drive Page Page Page Memory Increasing Memory Removing or Inserting a Memory Module Page Page Page Page Page Preparing for a Software Update Accessing Notebook Product Information Accessing Notebook ROM Information Downloading and Installing an Update Downloading and Installing a ROM Update Downloading a ROM Update Installing a ROM Update Downloading and Installing a Non-ROM SoftPaq Page Software Recovery Using System Restore Page Setup Utility Opening the Setup Utility Changing the Language of Computer Setup Navigating and Selecting in the Setup Utility Displaying System Information Restoring Default Settings in the Setup Utility Using Advanced Setup Utility Features Closing the Setup Utility A Specifications Operating Environment Rated Input Power Expansion Port Input/Output Signals Index