Vista printer unknown device

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Remove From My Forums. Answered by:. Archived Forums. Windows Vista Hardware. Sign in to vote. Wednesday, October 29, PM. Hi, This behavior occurs if incompatible drivers exist. Unplug all cables from the scanner and the scanner cable from the computer 2. Friday, October 31, AM. Hi, How does it work when you try to scan with the software that came with the device? I do not know what is to try to fix it.

In Device Manager properties it says "No driver installed or needed for this device. If I uninstall or disable this Unknown Device it simply reinstalls when computer is turned on next. Code 43 implies that Windows has stopped this device because it has reported problems. One of the drivers controlling the device notified the operating system that the device failed in some manner. This lets the controllers recover the USB port from its unresponsive condition.

Disconnect all USB devices except keyboard and mouse. Click on start button. Type "devmgmt. In the device manager scroll down to the USB Controllers. A list of the devices that are installed on your computer that may have a problem is displayed in the details pane, as follows:.

The Device column lists the common name for the device, or the name of the device driver associated with it. The Error Code column lists the error code associated with this specific problem. Frequently, the Device Manager error code helps determine what created the unknown device. For example, if your computer generates a "Bad or missing device driver" error message, three types of entries may be listed under Problem Devices , depending on the device type:.

View the Setupapi. By default, the Setupapi. Sometimes the listed device name can be misleading. For example, a device may be listed as a serial device in Device Manager, when in reality it is not related to a serial port. This typically occurs when a partial Plug and Play ID is available, and Device Manager interprets it as a serial device. This interpretation may occur because of a compatible ID specified by the device. Again, this can be corrected by locating the startup program that may not be behaving correctly.

Be aware that merely removing the unknown device in Device Manager does not work if a software program is the cause of the unknown device. You must remove the program and then restart your computer. If the unknown device is still listed in Device Manager after you restart your computer in safe mode, contact Microsoft Customer Support Services for help in removing the device.

Remove hardware devices from your computer Remove hardware devices one at a time until the unknown device is no longer listed in Device Manager. Be aware that this method may be time-consuming and is not always reliable. Determine whether the device driver is digitally signed When you install a device driver, and Windows detects that it is not digitally signed, you may receive a warning message and the option to cancel or continue the installation This message is displayed only if your computer is configured to display a warning message whenever an installation program tries to install a device driver without a digital signature.

Note A device driver that is digitally signed can still be listed as an unknown device in Device Manager. For more information about driver signing for Windows, visit the following Microsoft Web site:.

You can block the installation of device drivers that do not contain a digital signature. Use this approach when you want to prevent any deliberate attempts to destabilize the computer. To do this, follow these steps:. Click Start , click Run , type control sysdm.

Under Drivers , click Driver Signing , and then click Block - Never install unsigned driver software. To view a list of device drivers installed on your computer that are not digitally signed, use either of the following methods:. Error 0xef: The third-party INF does not contain digital signature information. Use the File Signature Verification tool The File Signature Verification tool lists all the unsigned drivers that are installed on your computer. It ended up being a Lexmark problem after all.

So you are correct, it was a defective Lexmark issue. I got this really cheap, and I was warned by a fellow tech co-worker of mine, that they are cheap for a reason.

Next time, I'll choose another brand. Thanks for your help. The newest drivers from each of these companies was used and the same problem has occurred. Unfortunately I cannot find any advice about this subject in conjunction with Windows Vista anywhere. As they are unable to supply the correct drivers to work with Vista so they should be responsible for refunding the purchase price of the printer so that the person can purchase a different brand that actually works with Vista.

As I posted months ago, HAL is right. It was a Lexmark issue, and not the OS. The vendor was kind enough probably because they knew Lexmark are horrible devices , and refunded my money. I ended up buying an Epson printer, and with their Vista drivers and software, Vista recognized it, and installed it within seconds.

It has been running smoothly ever since. HI when u install virus effected drivers so that it will blocked the usb port, first scan u r system with antivirus then install Drivers Regards Meer Akbar Ali.