Compaq 319954-001 Wireless Problems

Troubleshooting

Reference Guide 6–21

Wireless Problems

If You Have Problems with Wireless 802.11

Communication

■Make sure the wireless indicator light is on.

■If your notebook includes Bluetooth capabilities, make sure

wireless 802.11 communication is turned on. Select Start >

All Programs > Utilities > Wireless Configuration, then make

sure that the 802.11 button is enabled.

■Make sure you are using the correct SSID and channel

settings.

■Make sure you are in range of an access point (for an

infrastructure connection) or other wireless notebook

(for an ad hoc connection).

■When you log on to an 802.11 network via an access point,

yet your notebook cannot connect to network resources,

your notebook may not have been assigned an IP address.

If the subnet mask for your wireless connection is

255.255.000.000, the network server did not assign an IP

address to your notebook, and you may have to release and

renew your network IP address. If releasing and renewing the

IP address does not fix the problem, the access point may

need to be rebooted.

■If you want to change the SSID to a different value to connect

to a different access point, or if you want to change from

Infrastructure mode to Ad Hoc mode, you may first have to

release and renew the Internet IP address.

■See ��Local Area Network (LAN) Problems” in this chapter.

319954-001.book Page 21 Thursday, February 3, 2005 3:03 PM

Contents

Main b Reference Guide Compaq Notebook Series Page Software Product License Agreement Page Page Page Contents Software Product License Agreement 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 7 Reference Information Index Page Front Panel and Right Panel Components Page Left Panel and Back Panel Components Page Bottom Panel Components 1 Hard drive 4 2 Battery latch 5 3 Page Status Lights Page Setting Up Your Notebook Step 1: Insert the Battery Pack Step 2: Connect AC Power Step 3: Connect a Phone Line 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 TouchPad To Use the Tap to Click Function of the TouchPad To Use the Function Hot Keys To Use the One-Touch Buttons 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 Lock Your Notebook To Attach a Security Cable To Protect Against Viruses To Lock the Hard Drive Taking Care of Your Notebook To Protect Your Hard 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 Schemes 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 Modem and Network Connections Using the Modem To Connect the Modem Special Restrictions in Certain Countries To Change Your Modem Settings Connecting to a Local Area Network (LAN) Using a Wireless LAN Adapter Page Making Wireless Network Connections (Select Models Only) To Prepare for Connections Connecting to a Wireless Network Checking the Wireless Connection Status Creating a New Computer-to-Computer (Ad Hoc) Network To Turn Wireless Communication On and Off Turning On Communication and Making a Connection Turning Off Communication and Ending a Connection Add-On Devices Connecting External Devices To Insert or Remove a PC Card Using Dual Display Mode To Connect a 1394 Device To Connect an Infrared Device Using the Infrared Port Avoiding Standby While Using Infrared Printing to an Infrared Printer Transferring Files Through an Infrared Connection To Use a Port Replicator Page Page Installing Additional RAM (Memory) To Install a RAM Expansion Module Page To Remove a RAM Expansion Module Replacing the Hard Drive To Replace the Hard Drive Page To Replace the Hard Drive Holder To Prepare a New Hard Drive 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 Pointer Is Difficult to Control If the TouchPad Does Not Work If the TouchPad Moves the Pointer or Cursor While You Type If a PS/2 Scroll Mouse Does Not Work Local Area Network (LAN) Problems If the Built-In Network Adapter Does Not Connect to the LAN If You Cannot Browse the Network Neighborhood or My Network Places If You Cannot Log In to Netware Servers If a Network Connection Responds Slowly Memory Problems If a Message Reports That You Are Out of Memory If Memory Does Not Increase After Adding RAM If the Notebook Beeps But Does Not Start After Adding RAM Modem Problems 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 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 and Battery Pack Problems 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 If a Serial or Parallel Printer Does Not Print 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 Main Menu System Devices Menu Security Menu Boot Menu Security Menu Exit Menu To Change Video Memory Settings Using BIOS Setup Utility 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 Reference Information Page Page Page Page Page Page Page Conexant AT Commands (Advanced Users Only) ECC Commands ECC Commands Command (Conexant) +ER: +ER= +ES= FAX Class 1 Voice Commands Voice Commands AT* Commands S-Registers (Conexant) Selected Result Codes (Conexant) Safety Information Power Cords Battery Safety Laser Safety LED Safety Mercury Safety Exposure to Radio Frequency Radiation Wireless Notice Regulatory Information U.S.A. Connections to Peripheral Devices Page Page Canada European Union Page Page Page Page New Zealand Conexant AMC20493-KT5 Data Fax Modem PTC 211/02/071 (Continued) Page Page Page Index