Manuals / HP / Computer Equipment / Laptop

HP 2161AD, 2509 Using Battery Power, To check battery status, To respond to a low-battery warning

Models: 2521EU 2530AI 2104EA 2102FD 2111EU 2508EU 2505EU 2164EA 2565EA 2561AH 2539AI 2523EU 2526AH 2538AI 2156AE 2126EU 2100 (Intel) 2120EU 2123EA 2116EU 2118EU 2509AT 2511EU 2168EA 2161AD 2175US 2181AF

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Using Battery Power

Batteries and Power Management

Using Battery Power

Using Battery Power

To check battery status

From the battery status light

Check the battery status light on the notebook.

From the Windows taskbar

The Windows taskbar can display a power icon that provides detailed battery status information (see Windows Help for details). The icon looks like a battery when AC is not connected.

•Place the pointer over the power icon to display the remaining battery charge. This value is shown as either a percentage of charge remaining, or as time remaining.

•Double-click the power icon to open the Battery Meter window.

From the Windows Control Panel

Select Start > Control Panel > Performance and Maintenance > Power Options, then select the Power Meter tab to see the battery status. The Alarms and Advanced tabs provide additional power-information options.

On the battery

1.Remove the battery from the notebook. See “Getting Started with Your Notebook” in this guide.

2.Press the contact pad on the side of the battery. The number of lights that turn on indicates the remaining charge (each light represents 20 percent of a full charge).

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.

32 Reference Guide

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HP 2161AD Using Battery Power, To check battery status, To respond to a low-battery warning, From the battery status light

Contents

Compaq Notebook Series Reference Guide Compaq Notebook Series Reference Guide First Edition December Reference Number 2100/2500/N1050v Part Numbernotebook must be connected to the Telecommunication Network through a Important Safety Informationline cord that meets the requirements of ACA Technical Standard TS008 Software Product License Agreement iv Reference GuideOWNERSHIP. Customer agrees that he/she does not have any title or ownership of the software, other than ownership of the physical media. Customer acknowledges and agrees that the software is copyrighted and protected under the copyright laws vi Reference Guide Getting Started with Your Notebook ContentsBasic Operation Batteries and Power Management Troubleshooting and MaintenanceModem and Network Connections Add-On DevicesReference Information IndexGetting Started with Your Notebook Reference GuideSeries 2100 and N1050v Identifying Parts of the NotebookIdentifying Parts of the Notebook Getting Started with Your Notebook Identifying Parts of the NotebookReference Guide 13 AC adapter jack 14 Universal serial bus ports USB4 Reference Guide Reset buttonBattery latch Getting Started with Your NotebookSeries Getting Started with Your NotebookIdentifying Parts of the Notebook Reference GuideGetting Started with Your Notebook 6 Reference GuideIdentifying Parts of the Notebook 26 Hard disk drive 27 Battery latch 31 Reset buttonGetting Started with Your Notebook Identifying Parts of the Notebook1 Power mode 3 Battery statusStatus Lights 2 Hard disk drive activityIdentifying Parts of the Notebook 1 Caps Lock On Caps Lock is activeStep 1 Insert the battery Setting Up Your NotebookSetting Up Your Notebook Step 2 Connect AC power Setting Up Your NotebookStep 3 Connect a phone line Setting Up Your NotebookStep 5 Set up Windows Step 4 Turn on the notebookSetting Up Your Notebook HintBasic Operation Reference GuideOperating Your Notebook Default power settingsOperating Your Notebook To change the boot device To reset the notebookOperating Your Notebook To use the TouchPad Operating Your NotebookTo use the function hot keys Basic OperationOperating Your Notebook Reference GuideTo program a One-Touch button To use the One-Touch buttonsOperating Your Notebook To use the ALT GR key To use the Windows and Applications keysOperating Your Notebook Using CDs or DVDs Using CDs or DVDsTo insert or remove a CD or DVD could stop responding and you could lose dataTo create or copy CDs To play DVD moviesUsing CDs or DVDs To set up password protection Securing Your NotebookTo lock your notebook Securing Your NotebookTo protect against viruses To attach a security cableSecuring Your Notebook When you enable hard disk drive lock, the current BIOS user password To lock the hard disk drivehard disk drive Securing Your NotebookTaking Care of Your Notebook To protect your hard disk driveTo maintain your notebook Taking Care of Your NotebookTo safeguard your data To clean your notebookTo extend the life of the display Taking Care of Your NotebookBatteries and Power Management Reference GuideManaging Power Consumption How the notebook manages power automaticallyManaging Power Consumption information that was not saved will be lostunsaved data if the notebook battery runs down completely Changing timeout settings and creating power schemesManaging Power Consumption Using Battery Power To check battery statusTo respond to a low-battery warning Using Battery PowerTo get the most from your batteries To recharge the batteryUsing Battery Power Using Battery Power Unplug the AC adapter when the notebook is not in useModem and Network Connections Reference GuideUsing the Modem Using the Modemtelephone line type prior to connecting your phone line Special restrictions in certain countries To change your modem settingsUsing the Modem Connecting to a Local Area Network LAN Connecting to a Local Area Network LANMaking Wireless Network Connections select models only Making Wireless Network Connections select models onlyConnecting to an Existing Wireless Network To prepare for connectionsCreating a New Notebook-to-Notebook Network Ad Hoc Making Wireless Network Connections select models onlyTo turn wireless communication on and off purchase a license before using the wireless functionthe individual wireless functions Turning on communication and making a connectionTurning off communication and ending a connection Making Wireless Network Connections select models onlyMaking Wireless Bluetooth Connections select models only To turn Bluetooth communication on and offMaking Wireless Bluetooth Connections select models only authorization before turning on your notebook wireless networkingTurning off Bluetooth communication To prepare for Bluetooth connectionsMaking Wireless Bluetooth Connections select models only To send or receive files using Bluetooth Sharing files with another Bluetooth device FTPSending Outlook data to another Bluetooth device OPP Making Wireless Bluetooth Connections select models onlyAdd-On Devices Reference GuideConnecting External Devices Connecting PC CardsConnecting External Devices To insert or remove a PC CardRemoving a PC Card Connecting External DevicesTo connect an audio device audio recorderof these jacks may damage the notebook replicatorConnecting an external monitor Switching the display to the external monitorAdjusting monitor resolution and other settings To use an external monitorTo connect an IEEE 1394 device select models only Using dual display modeConnecting External Devices Using the infrared port To connect an infrared device select models onlyNote select models only Printing to an infrared printerTo use a port replicator select models only Connecting External DevicesTo dock to the port replicator Connecting External DevicesTo undock from the port replicator 56 Reference GuideConnecting External Devices Add-On DevicesInstalling Additional RAM Memory To install a RAM expansion moduleInstalling Additional RAM Memory back of the notebookInstalling Additional RAM Memory 5. Replace the cover 6. Insert the batteryof the notebook To remove a RAM expansion moduleInstalling Additional RAM Memory 60 Reference Guide Installing Additional RAM Memory5. Pull the board out of the connector 6. Replace the cover 7. Insert the batteryTo replace the hard disk drive Replacing the Hard Disk DriveReplacing the Hard Disk Drive To replace the hard disk drive holder Replacing the Hard Disk DriveTo prepare a new hard disk drive Replacing the Hard Disk DriveTroubleshooting and Maintenance Reference GuideTroubleshooting Your Notebook Audio problemsTroubleshooting Your Notebook If no sound is audibleCD-ROM and DVD problems If you can’t boot from a CD or DVDIf you get a Region Code error when playing a DVD movie If you hear a loud high-pitched whine feedback from the speakersDisplay problems If a DVD movie doesn’t fill the screenIf a DVD doesn’t play with two displays If the notebook can’t find Wordpad.exe after inserting a CDHard disk drive problems If an external display does not workIf the notebook hard drive doesn’t spin If the hard disk makes a buzzing or whining noiseHeat problems Infrared problemsIf you have problems with infrared communications If the notebook gets abnormally hotKeyboard and pointing device problems If the pointer is difficult to controlIf the TouchPad doesn’t work If the TouchPad moves the pointer or cursor while you typeLocal area network LAN problems If the built-in network adapter doesn’t connect to the LANIf you can’t browse the Network Neighborhood or My Network Places If you can’t log in to Netware serversMemory problems Modem problemsIf a message says you are out of memory If memory doesn’t increase after adding RAMIf the modem doesn’t dial or no dial tone is detected If the modem dials incorrectlyIf the modem dials but doesn’t connect If the modem isn’t detectedIf the modem causes an ERROR message If the modem dials but you can’t hear itIf the modem connects, but transferred data is bad If the modem doesn’t faxPC Card PCMCIA problems Performance problemsIf the notebook doesn’t recognize a PC Card If a network PC card stops communicating properlyPower and battery problems If the notebook stops respondingIf the notebook turns off immediately after it turns on If the notebook keeps beepingIf the battery doesn’t charge If the Time Remaining for the battery is not correctIf the notebook has a short operating time Troubleshooting Your NotebookPrinting problems If the notebook doesn’t enter Standby mode as expectedIf the notebook doesn’t enter Hibernation as expected If a serial or parallel printer doesn’t printSerial, parallel, and USB problems If a serial mouse doesn’t workIf a serial modem doesn’t work properly If the serial or parallel port is not workingStartup problems If the notebook doesn’t respond when you turn it onIf the notebook won’t boot from battery power If the notebook won’t boot from the floppy disk driveWireless problems If you have problems with wireless 802.11 communicationIf the notebook takes a long time to resume after being suspended Troubleshooting Your NotebookIf your notebook cannot detect any Bluetooth devices If your notebook cannot detect a certain Bluetooth deviceIf you cannot connect to a particular notebook on the network If you can connect, but the network is slowTo run the BIOS Setup utility Configuring the NotebookConfiguring the Notebook Main Menu System Devices MenuTroubleshooting and Maintenance Configuring the NotebookBoot Menu Security MenuExit Menu 86 Reference GuideTo change video memory settings using BIOS Setup utility Configuring the NotebookTo replace a damaged QuickRestore System Recovery CD Reinstalling and Updating SoftwareReinstalling and Updating Software Reference Information Reference GuideConexant AT Commands Advanced Users Only Modem Reference InformationModem Reference Conexant Modem Reference InformationConexant AT Commands Advanced Users Only CommandReference Information Modem Reference Information92 Reference Guide Conexant AT Commands Advanced Users OnlyCommand Reference InformationConexant AT Commands Advanced Users Only CommandReference Information Modem Reference InformationECC Commands FAX Class94 Reference Guide Conexant AT Commands Advanced Users OnlyVoice Commands Conexant AT Commands Advanced Users OnlyCommand AT* CommandsModem Reference Information S-Registers Conexant Selected Result Codes Conexant96 Reference Guide DefaultPower Cords Safety InformationSafety Information Laser Safety Battery SafetySafety Information Mercury Safety LED SafetySafety Information Exposure to Radio Frequency Radiation Safety InformationRegulatory Information U.S.ARegulatory Information Connections to Peripheral DevicesApplicable certification jack USOC = RJ11C. A plug and jack used to connect this equipment to the premises wiring and telephone network must comply with the applicable FCC Part 68 rules and requirements adopted by the ACTA. A compliant telephone cord and modular plug is provided with this product. It is designed to be connected to a compatible modular jack that is also compliant. See installation instructions for details Regulatory InformationDeclaration of Conformity U.S.A CanadaRegulatory Information European Union Regulatory InformationRegulatory Information Italy Indoor or outdoor use in a public area requires a user licenseJapan Telecommunications Approval JapanRegulatory Information New Zealand PTC200 2.11.1 6 & 7 Compliance Testing Functional testsReference Information Regulatory InformationInternational RussiaRegulatory Information Safety Reference InformationRegulatory Information Reference GuideIndex Reference GuideQuickRestore System Recovery Reference Guide112 Reference Guide