HP 320399-002 manual USB Problems, USB device does not work during startup

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Problems and Solutions

USB Problems

USB device does not work

■If the device requires external power, be sure that it is plugged securely into an electrical outlet as well as into a USB connector on the notebook.

■Verify that the device is functioning properly by connecting it to a USB connector on another system.

■Verify with the device manufacturer that you are using the correct driver(s).

■Use the Device Manager utility in your operating system to check for and resolve any resource conflicts.

USB device does not work during startup

Refer to your model-specific documentation for information about USB legacy support. (USB legacy support enables a USB device, such as an optional external keyboard or mouse, to function during startup, before Windows loads.)

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 is not audible Audio ProblemsSound does not record 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 device does not work FireWire Ieee 1394 ProblemsFireWire connector has only 4 pins Game frequently stops responding or locks up Game ProblemsGame sounds are erratic Primary hard drive cannot be accessed Hard Drive ProblemsPrimary hard drive is not recognized Secondary hard drive is not recognized Infrared link cannot be established Infrared Communication ProblemsStandby is preventing infrared transmission Internet buttons do not respond Internet ProblemsAssorted keys are typing incorrect characters Keyboard and Pointing Device ProblemsLetter keys are typing numbers Pointer moves erratically as you type Keypad does not workHotkeys do not work on an external keyboard Pointer driftsTouchPad does not work Pointing stick does not workExternal mouse 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 memoryNo dial tone is audible Modem ProblemsModem does not dial correctly Modem sounds are not audible Modem dials correctly but does not connectCharacters are garbled or transfer rates are slow Modem does not connect at highest speedModem loses connection 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 alerts are not audible PC Card problemsPC Card does not work and alerts are not audible PC Card modem is not working Network PC Card stops communicatingVideo jack has 7 pins Television problemsTelevision is blank Temperature Problems USB device does not work USB ProblemsUSB device does not work during startup 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