Compaq 370698-002 ,

Battery Packs and Power Management

Reference Guide 3–5

To Respond to a Low-Battery Warning

The notebook automatically alerts you when the battery power

drops to a critically low level. The notebook first emits a

high-pitched beep or displays a warning message. Then, if you

do not restore power within a short time, the notebook goes into

Hibernation.

After the notebook enters Hibernation in this way, you will not be

able to turn it on again until you restore power by using one of the

following procedures:

■Replace the battery pack with a charged one.

■Plug in the AC adapter.

✎If you plug in the AC adapter, you can continue to work while

your battery pack recharges.

To Recharge the Battery Pack

ÄCAUTION: The AC adapter is normally warm when plugged into an

AC outlet. The notebook is normally warm while recharging. Do not

recharge the notebook in a briefcase or other confined space, or the

battery pack could overheat.

»Plug the AC adapter into the notebook.

Charging can take several hours. If you continue working while

the battery pack charges, the charging time may increase.

The operating time for a fully charged battery pack depends on

the notebook model, power management settings, and level

of use.

Contents

Main b Reference Guide Compaq Notebook Series Page Contents 1 Getting Started with Your Notebook 2 Basic Operation 3 Battery Packs and Power Management 4 Modem and Network Connections 5 Add-On Devices 6 Troubleshooting Index Page Front Panel and Right Panel Components Left Pa nel and Ba ck Panel Com ponents Bottom Panel Components Status Lights Page Setting Up Your Notebook Step 1: Insert the Battery Pack Step 2: Connect AC Power Page Step 4: Turn On the Notebook Step 5: Set Up Windows Page Default Power Settings Power mode To enter this mode Function To Reset the Notebook To Change the Boot Device To Use the Touch Pad Page To Use the Function Hot Keys To Use the One -Touch Bu ttons To Use the Windows and Applications Keys To Type Alternate Graphics Using the ALT GR Key Using CDs or DVDs To Insert or Remove a CD or DVD To Play DVD Movies To Crea te or Cop y CDs To Write to DVD Media (Select Models Only) Securing Your Notebook To Set Up Password Protection To Loc k Your Note book Taking Care of Your Notebook To Prot ect Your H ard Drive To Maintain Your Notebook To Safeguard Your Data To Extend the Life of the Display To Clean Your Notebook Page How the Notebook Manages Power Automatically When this occurs The result is To resume To Change Timeout Settings and Create Power Sc hemes Using Battery Power To Check Battery Status To Respond to a Low-Battery Warning To Recharge the Battery Pack To Get the Most from Your Battery Packs Page Disposing of a Used Battery Pack Modem and Network Connections Using the Modem To Con nect the Modem Special Restrictions in Certain Countries To Cha nge Your Mo dem Set tings Connecting to a Local Area Network (LAN) Using a Wireless LAN Adapter (Select Models Only) Making Wireless Network Connections (Select Models Only) To Turn Wireless Communication On an d Off Turning On Communication and Making a Connection Page Add-On Devices Connecting External Devices To Insert or Remove a PC Card Inserting a PC Card Using Dual Display Mode To Con nect a 1394 D evice (Select Models Only) Installing Additional RAM (Memory) To Install a RAM Expansion Module Page To Remove a RAM Expansion Module Page Replacing the Hard Drive To Rep lace the Hard Dri ve To Replace the Hard Drive Holder Page Troubleshooting Troubleshooting Your Notebook Audio Problems If No Sound Is Audible If Sound Does Not Record If You Hear Loud, High-Pitched Feedback from the Speakers CD-ROM and DVD Problems If You Cannot Boot from a CD or DVD If a DVD Plays Erratically If You Get a Region Code Error When Playing a DVD Movie If the Notebook Cannot Read a CD or DVD Display Problems If the Notebook Is On, But the Screen Is Blank If the Screen Is Difficult to Read If an External Display Does Not Work Hard Drive Problems If the Notebook Hard Drive Does Not Spin If the Hard Drive Makes a Buzzing or Whining Noise If Files Are Corrupted Heat Problems If the Notebook Gets Abnormally Hot Keyboard and Pointing Device Problems If the Pointer Is Difficult to Control If the TouchPad Does Not Work Local Area Network (LAN) Problems Memory Problems Modem Problems If the Modem Seems Slow If the Modem Does Not Dial or No Dial Tone Is Detected If the Modem Dials Incorrectly If the Modem Dials, But Does Not Connect If the Modem Is Not Detected If the Modem Dials, But You Cannot Hear It If the Modem Connects, But Transferred Data Is Bad If the Modem Causes an ERROR Message If the Modem Does Not Fax If Excessive Line Current Is Detected PC Card (PCMCIA) Problems If the Notebook Does Not Recognize a PC Card If a Network PC Card Stops Communicating Properly If a PC Card Modem Is Not Working Performance Problems If the Notebook Pauses or Runs Sluggishly If the Notebook Stops Responding Power an d Batter y Pack Pr oblems If the Notebook Turns Off Immediately After It Turns On If the Notebook Keeps Beeping If the Battery Pack Does Not Charge If the Notebook Has a Short Operating Time If the Time Remaining for the Battery Pack Is Not Correct If the Notebook Does Not Enter Standby Mode as Expected If the Notebook Does Not Enter Hibernation as Expected Printing Problems Serial, Parallel and USB Problems If a Serial Mouse Does Not Work If a Serial Modem Does Not Work Properly If the Serial or Parallel Port Is Not Working If the USB Port Is Not Working Startup Problems If the Notebook Does Not Respond When You Turn It On If the Notebook Will Not Boot from Battery Power Page Wireless Problems If You Have Problems with Wireless 802.11 Communication Page Configuring Your Notebook To Run the BIOS Setup Utility Page System Devices Menu Security Menu Boot Menu Exit Menu Updating Software and Drivers from the Web Using System Recovery Features Safeguarding Your Data Operating System (OS) CD Repair OS CD Reinstall Reinstalling Drivers Restoring Software Applications Index