"Unknown device" constantly detected

Under Vista, an "unknown device" is detected when nothing is connected to the USB ports, and it continues to settle after I uninstall it.
Moreover, nothing that I connect is never detected.

Hi MatCar,

Check to see if the following is useful.

Method 1:

 

Try to reinstall the USB controllers and check if it helps.

a. click the Start button, type "devmgmt.msc" and press ENTER.

(b) in Device Manager, expand the Bus USB controllers section by clicking on the sign «+»

c. each of the devices under the USB controller section uninstall by right-clicking on each one, then click on uninstall.

d. close Device Manager, and then restart your computer. Windows RE-automatically install the USB controllers in your computer, without you having to do anything further. Your computer is now running properly USB devices.

Method 2:

Log on to the manufacturer's Web site and update the latest chipset drivers and other updates to the device driver.

Tags: Windows

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