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HP Pavilion dv6-1320sd Entertainment Notebook PC support

USB Device Troubleshooting (Windows Vista)

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This document pertains to HP and Compaq Notebook computers with Windows Vista.
Most USB devices require USB device software drivers to be installed before connecting the USB device to the computer. When installing a USB device, always follow the documentation from the USB device manufacturer.
Before performing the troubleshooting actions below, run the HP Support Assistant to see if your problem can be fixed automatically. To run the HP Support Assistant, follow these steps.
  1. Click Start and then click Help and Support .
  2. Click Maintain , and on the Actions tab click Refresh .
  3. A list of Recommended actions and learning tips that are available will be displayed. Click All to select all the actions listed and then click Apply .
    The Health Analysis applies updates and fixes to your computer. To learn more about HP Support Assistant, see HP Notebook PC - HP Support Assistant .
If the Health Analysis in the HP Support Assistant did not automatically solve the problem, try the manual troubleshooting actions below.
Perform the following steps to troubleshoot the USB port when a USB device is detected by the computer, but is not working properly:
  1. Click Start , enter device manager in the search field and select Device Manager from the list.
    The Device Manager window opens.
  2. showhide
    Double-click Universal Serial Bus Controllers to expand the list, and take the recommended action.
    • If the device displays in Device Manager, the USB port is working properly. There is a physical problem with the device or there is an issue with the device software drivers. Try disconnecting the USB device, closing any software for the device that may be open, uninstalling the USB device software driver, and then reinstalling the driver. Connect the USB device to the computer after the software drivers are installed. Refer to the device manufacturer for more information.
    • If the device displays as an unknown device, check the following items:
      1. If the USB device is connected to a USB port on a port replicator, unplug it and plug it into a USB port on the notebook.
      2. The device may not be getting enough power. If other USB devices are connected to the system, remove all other USB devices (except keyboard and mouse) and restart the computer. Check Device Manager again. If this solves the issue, use a powered USB hub to power more devices.
      3. Disconnect the USB device, close any software for the device that may be open, uninstall the USB device software driver, and then reinstall the device software driver.
    • If the device displays under Other Devices, then the USB ports are working, but the device software drivers need to be installed. If a disc with drivers was provided with the device, unplug the USB device and install the software drivers per the manufacturer's instructions. If drivers are not provided, connect the USB device, then turn on the device and allow Windows to detect the device and install the generic Windows drivers.
    • The device is not listed at all. See Troubleshoot the USB port when device not detected .
If you have looked in Device Manager as outlined in Troubleshoot the USB port when device is detected , and the USB device was not listed, follow the steps below to troubleshoot the problem:
  1. If the USB device is missing, go to the Device Manager. Under Universal Serial Bus controllers, double-click the USB Root Hub , and when the window opens, click the Power tab. The available ports and power usage are shown.
    Remove the devices and use a powered hub if the displayed power is over 500 mA. To check the properties of a hub, double-click HUB and the hub information window will open.
  2. Remove high-speed USB cables that are over three meters in length and use high-speed cables that are shorter than three meters.
  3. Only use high-speed cables shorter than three meters with high-speed USB devices (Multifunction devices, scanners, and cameras).
  4. If the USB device is connected to a USB port on a keyboard, unplug it and plug it into a USB port on the computer or a powered hub.
  5. There may be an issue with the USB port. Try plugging into a different USB port. If the USB device displays in Device Manager after plugging the cable into a different port, then uninstall and reinstall the USB device software driver.
If these general troubleshooting tips do not help, continue to Remove the USB Host Controller .
If the USB device was not listed in the Device Manager, and none of the previous troubleshooting tips fixed the problem, it may be necessary to disconnect all USB devices and use the following steps to remove the USB Host Controller:
  1. Click Start , enter device manager in the search field and select Device Manager from the list.
    The Device Manager window opens.
  2. Double-click Universal Serial Bus Controllers to expand the list.
  3. Select USB Root Hub , and then right-click the item. Select Uninstall from the drop-down menu. Continue until all USB Root Hubs are removed.
  4. Once all the USB Root Hubs have been uninstalled, click the Scan for hardware changes button in the Device Manager taskbar. Windows Vista will scan your system and install default drivers to replace the ones you had just deleted.
  5. Reconnect the USB device. Consult the manufacturer of the device for support if the device still fails to display.
    NOTE:USB drivers for the notebook are part of the chipset. If necessary, the USB drivers required by the notebook can be reinstalled from Application recovery.
For additional information, go to the See also section.
Check the Basic Input/Output System (BIOS) for legacy USB support. To do this, follow the procedures below:
  1. Restart the computer.
  2. When the first screen displays, press F10 repeatedly until the setup screen displays.
  3. Use the Left Arrow and Right Arrow keys to select the Advanced tab. Now use the Up Arrow and Down Arrow keys to select Legacy USB Support .
  4. Press Enter , select Enabled , and then press Enter .
  5. Press F10 to save settings and exit. The error message should no longer display.
Many USB issues can be resolved by updating your operating system, BIOS, and/or device drivers as described below:
  • Performing Windows Updates - For Microsoft Windows products, go to Start and type updates and then select Windows Update from the resulting list for additional information on scheduling automatic updates or performing manual updates.
  • HP Support Assistant - HP recommends that you use HP Support Assistant to update your HP BIOS and device drivers. For additional information on updating the BIOS, go to the See also section.
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