HP 320399-002 manual Throughput and connection range vary

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Problems and Solutions

Throughput and connection range vary

If there are large variations in throughput and range even when equipment is stationary, the cause may be nearby sources of radio frequency interference. WLAN radios operate in unlicensed frequency bands where many other sorts of radio devices may also operate. Such radio devices may severely impact performance of the WLAN. Devices which may cause interference include cordless telephones, microwave ovens, and Bluetooth radio devices.

If the problem is due to a cordless telephone, either the telephone or the WLAN device can be moved to another frequency in the band for improved performance. For channel changing instructions, refer to your telephone or WLAN device documentation.

Notebook cannot detect a Bluetooth device

Verify that the Bluetooth device is turned on.

Some Bluetooth phones must be set for detection and may be detectable by other devices for only a short time.

On most notebooks, the device configuration is available in the Entire Bluetooth Neighborhood. For more information, refer to the documentation included with the Bluetooth device.

Refresh the list of Bluetooth devices as instructed in your Bluetooth documentation.

Verify that:

The Bluetooth search for devices is active.

Device responses to the Bluetooth search are not filtered.

Troubleshooting

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Contents Troubleshooting Page Contents Contents Troubleshooting Index Help Is Available Is the Notebook Turned On? Is the Notebook Receiving Adequate Power?Is the System Unresponsive? Is the Notebook Overheated?Is an External Device Not Working? Is Software Functioning Abnormally? Help Is Available Help from Documentation Help from Your NotebookFor help specific to your notebook Help from the World Wide WebPreparing to Call Customer Support Help by TelephoneAccessing Customer Support Telephone Numbers Help from a Service ProviderProblems and Solutions Sound does not record Audio ProblemsSound is not audible Battery and Power Problems Indicators are displaying a low-battery condition Battery pack is warm after charging Battery pack does not chargeBattery pack charge displays seem inaccurate Standby cannot be initiated Battery pack run time is shorter than expectedHibernation cannot be initiated CD or DVD drive is not recognized by the system CD or DVD ProblemsNo alert sounds when a CD or DVD drive is inserted DVD play is erratic DVD movie does not fill the screenStandby or Hibernation affects CD or DVD play DVD region error code is displayedDigital memory alerts are not audible Digital Memory Card or Memory Stick problemsProblems and Solutions Display is blank Display ProblemsCharacters are dim or difficult to read Desktop icons are too large or too smallFireWire connector has only 4 pins FireWire Ieee 1394 ProblemsFireWire device does not work Game sounds are erratic Game ProblemsGame frequently stops responding or locks up Primary hard drive is not recognized Hard Drive ProblemsPrimary hard drive cannot be accessed Secondary hard drive is not recognized Infrared link cannot be established Infrared Communication ProblemsStandby is preventing infrared transmission Internet buttons do not respond Internet ProblemsLetter keys are typing numbers Keyboard and Pointing Device ProblemsAssorted keys are typing incorrect characters Pointer moves erratically as you type Keypad does not workHotkeys do not work on an external keyboard Pointer driftsExternal mouse does not work Pointing stick does not workTouchPad does not work USB keyboard or pointing device does not work PS/2 scroll mouse does not workNew memory module affects startup Memory ProblemsInsufficient memory message is displayed New memory module does not increase memoryModem does not dial correctly Modem ProblemsNo dial tone is audible Modem sounds are not audible Modem dials correctly but does not connectModem loses connection Modem does not connect at highest speedCharacters are garbled or transfer rates are slow Message reports excessive line current Fax transmissions do not workConnection occurs, but network seems inactive Network ProblemsNetwork connection is slow Some network resources are not availablePC Card does not work and alerts are not audible PC Card problemsPC Card alerts are not audible PC Card modem is not working Network PC Card stops communicatingTelevision is blank Television problemsVideo jack has 7 pins Temperature Problems USB device does not work during startup USB ProblemsUSB device does not work Wireless LAN Wlan Device Problems Connection breaks after 3 minutes Rate indication in the Connection Status fluctuates Throughput and connection range vary Index Index DVD Index-4 See also Internet monitor, external Index-6 Index-7 USB