HP 2500 (DP663AV), 2186AF, 2183AF, 2182US, 2182AT, 2182AF, 2181AF, 2509 Memory problems, Modem problems

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Troubleshooting and Maintenance

Troubleshooting Your Notebook

Memory problems

If a message says you are out of memory

•Make sure drive C is not running low on free space.

•If you are having memory problems while running MS-DOS programs, use the MS-DOS or Application and Software troubleshooter in Windows Help. Select Start >Help and Support.

•The full amount of RAM in your notebook is not available for running applications. A certain amount of RAM is used for display memory. The amount of display memory is shown in the BIOS Setup utility.

If memory doesn’t increase after adding RAM

Make sure your notebook is using only PC2100 DDR 266MHz or higher memory (RAM) modules.

If the notebook beeps but doesn’t start after adding RAM

You installed an incompatible type of RAM. Remove the module.

Modem problems

If the modem seems slow

•Excess static or noise on a line reduces the overall transmission speed of the modem connection. If necessary, contact your telephone company about fixing this type of problem.

•If you’re dialing internationally, line noise is often a problem that’s difficult or impossible to eliminate.

•If you have call-waiting, disable it—your telephone company can provide instructions. It can cause symptoms similar to static.

•Eliminate extra connections in the line. If possible, connect directly to the wall jack.

•Try another telephone line, preferably one normally used for a fax machine or modem.

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Contents Compaq Notebook Series Reference Guide Reference Guide Second Edition March Part Number Important Safety Information Iv Reference Guide Software Product License AgreementReference Guide Vi Reference Guide Contents Batteries and Power Management Troubleshooting and Maintenance Index Getting Started with Your Notebook Front panel and right panel components Identifying Parts of the NotebookCD-ROM, DVD, or other drive Universal serial bus port USB Left panel and back panel components PC Card and CardBus slot and buttons Bottom panel components Identifying Parts of the Notebook Hard drive activity Power modeBattery status Status lightsIdentifying Parts of the Notebook Insert the battery Setting Up Your NotebookConnect AC power Connect a phone line Turn on the notebook Set up WindowsHint Basic Operation Operating Your Notebook Default power settingsPower mode To enter this mode Function Standby -PowerTo change the boot device To reset the notebookTo use the TouchPad TouchPad on-off button and indicator lightThis hot key Does this To use the function hot keysTo program a One-Touch button To use the One-Touch buttonsTo use the ALT GR key To use the Windows and Applications keysThis key combination Does this Onto the spindle 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 moviesWindows To set up password protectionSecuring Your Notebook To lock your notebookTo protect against viruses To attach a security cableHard drive To lock the hard driveTo protect your hard drive Taking Care of Your NotebookTo maintain your notebook To clean your notebook To safeguard your dataTo extend the life of the display Batteries and Power Management How the notebook manages power automatically Managing Power ConsumptionInformation that was not saved will be lost Unsaved data if the notebook battery runs down completely Changing timeout settings and creating power schemesTo check battery status Using Battery PowerTo recharge the battery To respond to a low-battery warningTo get the most from your batteries Using Battery Power Modem and Network Connections Your telephone line type prior to connecting your phone line Using the ModemSpecial restrictions in certain countries To change your modem settingsConnecting to a Local Area Network LAN Connecting to an existing wireless network Making Wireless Network Connections select models onlyTo prepare for connections Creating a New Notebook-to-Notebook Network Ad Hoc Individual wireless functions Purchase a license before using the wireless functionTurning on communication and making a connection Turning off communication and ending a connection Function Making Wireless Bluetooth Connections select models onlyTo turn Bluetooth communication on and off Turning on Bluetooth communicationTurning off Bluetooth communication To prepare for Bluetooth connectionsSharing files with another Bluetooth device FTP To send or receive files using BluetoothSending Outlook data to another Bluetooth device OPP Add-On Devices Connecting PC Cards Connecting External DevicesInserting a PC Card Connecting External Devices These jacks may damage the notebook Audio recorderAudio ports on your notebook Adjusting monitor resolution and other settings Connecting an external monitorTo use an external monitor To connect an Ieee 1394 device select models only Using dual display modeTransferring files through an infrared connection Using the infrared portTo connect an infrared device select models only Printing to an infrared printerTo use a port replicator select models only Corresponding port on the port replicator is ignored To dock to the port replicatorTo undock from the port replicator To install a RAM expansion module Installing Additional RAM MemoryBack of the notebook Installing Additional RAM Memory To remove a RAM expansion module Installing Additional RAM Memory To replace the hard drive Replacing the Hard DriveTo replace the hard drive holder To prepare a new hard drive Troubleshooting and Maintenance If sound does not record Troubleshooting Your NotebookAudio problems If no sound is audibleIf a DVD plays erratically CD-ROM and DVD problemsIf you can’t boot from a CD or DVD If you get a Region Code error when playing a DVD movieDisplay problems Heat problems Hard drive problemsKeyboard and pointing device problems Infrared problemsIf you can’t log in to Netware servers Local area network LAN problemsIf a PS/2 scroll mouse doesn’t work If the built-in network adapter doesn’t connect to the LANModem problems Memory problemsIf the modem isn’t detected If the modem doesn’t dial or no dial tone is detectedIf the modem dials incorrectly If the modem dials but doesn’t connectIf the modem doesn’t fax If the modem causes an Error messageIf the modem dials but you can’t hear it If the modem connects, but transferred data is badPerformance problems PC Card Pcmcia problemsIf the notebook keeps beeping Power and battery problemsIf the notebook stops responding If the notebook turns off immediately after it turns onIf the Time Remaining for the battery is not correct If the battery does not chargeIf the notebook has a short operating time Printing problems If the serial or parallel port is not working Serial, parallel, and USB problemsIf a serial mouse doesn’t work If a serial modem does not work properlyStartup problems If you have problems with wireless 802.11 communication Wireless problemsIf your notebook cannot detect a certain Bluetooth device If your notebook cannot detect any Bluetooth devicesIf you can connect, but the network is slow To run the Bios Setup utility Configuring the NotebookMain Menu Setting Description DefaultSecurity Menu To change video memory settings using Bios Setup utility To replace a damaged QuickRestore System Recovery CD Reinstalling and Updating SoftwareReference Information Modem Reference Information Command ConexantModem Reference Conexant G,h,i G,h +MCR ECC Commands +FMR AT* CommandsCode Meaning Register Function Conexant Range/units DefaultPower cords Safety InformationCountry or Region Rated Voltage and Current Laser safety Battery safetyMercury safety LED safetyExposure to radio frequency radiation Connections to Peripheral Devices Regulatory InformationRegulatory Information Trade name CanadaDeclaration of Conformity U.S.A Responsible PartyEuropean Union Regulatory Information Japan Telecommunications Approval JapanConexant AMC20493-KT5 Data Fax Modem PTC 211/02/071 New ZealandRussia International EMC Index QuickRestore System Recovery USB
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2547EA, 2552AI, 2541AH, 2543AH, 2542EA specifications

The HP 2135US is a versatile all-in-one desktop computer designed to meet the needs of home and small office users. This robust machine is particularly attractive for individuals who seek a blend of performance, aesthetics, and user-friendly features.

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