Note Most USB and IEEE 1394 devices function correctly without additional device drivers because they are configured by the drivers that are included with Windows for these bus types. Also, a status of Error Code 1 or Error Code 10 may be displayed when you view the properties of the device in Device Manager. This is very common with universal serial bus (USB) and Institute of Electrical and Electronics Engineering (IEEE) 1394 composite devices. The device does not have a device driver: When a device driver for a device is not available, Device Manager displays the device as Unknown Device and puts it in the Other devices branch. Causes of unknown devices in Device Manager For information about how to do this, visit the following Microsoft Web site: If you are not comfortable with advanced troubleshooting, you might want to ask someone for help or contact support. This section is intended for advanced computer users. Download and install the Windows XP version of the driver. Look for a Drivers section or a Download section on the manufacturer’s Web site, and search for the device name. Visit the Web site of the device manufacturer if the device was preinstalled on your computer and the computer manufacturer does not have an updated driver. Visit the Web site of the device manufacturer if the device was installed after you purchased your computer. Visit the Web site of the computer manufacturer if the device came with the computer.

When you download a driver from the Internet, download the Windows XP version of the driver when multiple Windows versions are listed. Method 2: Download and install the latest driver from the Internet Visit the following Microsoft Web site to see whether the Web site autodetects an updated driver for your device. Use the following methods to enable Windows to recognize your device. To fix this issue, obtain an updated driver for the device. The main reason for Unknown Device to display in your Device Manager is because you have a device that is not working correctly. This article discusses the possible reasons that an unknown device may appear in Device Manager. It may be difficult to determine the cause of this unknown device, because there are few indications of what generates it. When you view device information in Device Manager, you may see a device listed as Unknown Device next to a yellow question mark. Lessįor a Microsoft Windows 2000 version of this article, see 244601.ĭevice Manager displays a list of all devices that are installed on a Windows XP-based computer. Microsoft Windows XP Home Edition Microsoft Windows XP Professional Microsoft Windows XP Professional 圆4 Edition More.

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