Why won’t my hardware device work after installing a Windows Vista service pack?

The device driver might not be installed or it might not be installed properly. To determine whether Device Manager can find the device driver, and to install or reinstall the driver if necessary, follow the procedures below in the order they're given.

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Find the device driver

Follow these steps to determine whether Device Manager can find the device driver:

  1. Click the Start button Picture of the Start button, click Control Panel, click System and Maintenance, and then click Device Manager. Beheerdersmachtiging vereist Typ het wachtwoord of een bevestiging als u wordt gevraagd om het Administrator-wachtwoord of een bevestiging.
  2. In the list, double-click the type of device, and then locate the specific device that isn't working properly.

    If an exclamation mark appears next to the name of the device, Device Manager can't find the device driver. Go to "Use Windows Update to find a device driver."

    If no exclamation mark appears next to the name of the device, go to "Uninstall and reinstall the device driver."

  3. Close Device Manager.

Uninstall and reinstall the device driver

Follow these steps to manually uninstall and reinstall the device driver:

  1. Click the Start button Picture of the Start button, click Control Panel, click System and Maintenance, and then click Device Manager. Beheerdersmachtiging vereist Typ het wachtwoord of een bevestiging als u wordt gevraagd om het Administrator-wachtwoord of een bevestiging.
  2. In the list, double-click the type of device, and then locate the specific device that isn't working properly. Right-click the device, and then click Properties.

  3. Click the Driver tab, click Uninstall, and then click OK.

  4. In the Device Manager dialog box, click the Action menu, and then click Scan for hardware changes.

    If you see a message saying that Windows has to install driver software for your unknown device, click Locate and install driver software (recommended).

    If the device driver is installed and working properly, you have resolved the problem. If the device is installed but isn't working properly, go to "Use Windows Update to find a device driver."

Use Windows Update to find a device driver

To use Windows Update, you must be logged on to the computer as an administrator. Follow these steps to use Windows Update to find a device driver:

  1. Click the Start button Picture of the Start button, click All Programs, and then click Windows Update. Beheerdersmachtiging vereist Typ het wachtwoord of een bevestiging als u wordt gevraagd om het Administrator-wachtwoord of een bevestiging.
  2. Click Check for updates.

  3. To see if any updated drivers are available, click View available updates.

    If updates are available, click the driver that you want to install, and then click Install. Beheerdersmachtiging vereist Typ het wachtwoord of een bevestiging als u wordt gevraagd om het Administrator-wachtwoord of een bevestiging.

    If Windows Update can't locate the required device driver, contact the device manufacturer to download the latest device driver for Windows Vista.

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