Question about Computers & Internet
What I do in such circumstances is run a little piece of freeware called "Unknown Device Identifier" which does a pretty good job of telling me what device is not working properly, identifying the manufacturer, which allows me to look up the support site and get the driver necessary to correct the problem. I've found that to be the quickest and surest way to resolve such issues.
You can also try double clicking the device in device manager and then selecting "update driver" and see if Windows can locate it on your hard drive or search the internet [providing you have a working connection] to find the appropriate driver and install it. I find it works about half of the time.
There is are other trouble shooting methods and the Microsoft Knowledge base does the most straight forward job of defining them so rather than reinvent the wheel I'll present them as written there:
The main reason for Unknown Device to display in your Device Manager is because you have a device that is not working correctly. To fix this issue, obtain an updated driver for the device.
Use the following methods to enable Windows to recognize your device. Method 1: Windows Update loadTOCNode(3, 'moreinformation'); Visit the following Microsoft Web site to see whether the Web site autodetects an updated driver for your device. Install all recommended drivers. http://www.windowsupdate.com (http://www.windowsupdate.com) Method 2: Download and install the latest driver from the Internet loadTOCNode(3, 'moreinformation'); When you download a driver from the Internet, download the Windows XP version of the driver when multiple Windows versions are listed. Use one of the following options:
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. However, an additional device driver is needed if the device does not fit the defined and supplied Windows class drivers. If the bus cannot identify the device, it interprets the device as a composite device and then reports it as such in Device Manager.
Note Software programs that require virtual hooks into hardware may create these devices. Additionally, devices that bridge between bus types, such as a device driver that enables a parallel port device to emulate a SCSI or an AT Attachment Packet Interface (ATAPI) bus, are also known to generate an unknown-device response in Device Manager.
Posted on Feb 04, 2010
A spyware infection doesn't care if your system is running Vista, XP, or Windows 98. With over 20 years of experience cleaning up computers, I can tell you that every system is at risk, and every operating system must have a robust spyware scanner that runs at regular intervals and that protects while a user browses the internet.
Posted on Feb 20, 2012
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Posted on Jan 02, 2017
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