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Thursday, 13 December 2012

Solution to Resolve the Error USB Device Not Recognized

USB device not recognized is regarded as a windows error which appears on the screen after an user attempts to attach an external device to the system. The error takes place when the computer has not recognized the USB device plugged into the system. The USB device may possibly belisted as an unknown device in Device Manager if this scenario emerges.

Root causes
The error may emerge as a consequence of one a combination of several of the following factors:

Affixed hubs
Malfunctioning USB driver modelsNo support for USB 2.0
Affixed devices
Extra system hardware or configurations that could perhaps adjust the timing
Failure of the host controller hardware

In a bid to eliminate the problematic issues causing the error the methods below may be applied

1. An unsecure or loose connection is one of the most common reasons for the occurrence of the error USB device not recognized.
The operator should remove the current USB device from the machine in the situation where one is attached. This is done in the eventuality that the connection is not firm and has become loose. The device should subsequently be securely reconnected to the system through a firm reattachement to the USB port.

2. Scan in order to access hardware changes in device manager that may be causing a situation in which the USB device is not recognized.
A computer owner should scan for recently installed hardware by manipulating the Device Manager. This is successfully done by navigating from the start menu to the 'run' option. When the 'run' option is chosen the characters Devmgmt.msc should be typed into the pop up box. The option ??~OK??T should then be selected. Utilizing the action menu, the operator should then click ??~scan for hardware changes??T. This procedure is going to induce windows to scan and locate any newly installed devices. As soon as this action has been done the user should ensure that all control panels and previously opened device managers are closed. Immediately after completing the steps in this process the user should try to verify whether the system has started to recognize the USB devices or devices.

3. USB Hub Power Management
error addressing technique normally requires the disabling of the power management of the USB hub. Adherence to the steps outlined below should result in the disabling of the power management on the USB hub

A. Click Start, followed by 'Run'.

B. Type devmgmt.msc in the popup box, after which you can click Ok. Expand the Universal Serial Bus Controllers' node,

C. Now follow the basic steps below for each listed USB Root Hub:

1. Use the right-click mouse function on the USB Root Hub and after that select (by clicking) Properties.

2. Choose the Power Management tab.

3. Press to clear the 'Allow the computer to turn off this device to save power' check box, followed by clicking Ok.

Consumers should be aware that should the ensuing procedure be applied to a laptop computer, a reduction in the battery life may occur The issue can sometimes be resolved by removing the USB device, shutting down the system for a period of twenty minutes before restarting it.
More Tips

If application of all the solutions fail then the user is advised to contact the manufacturer for new driver information This is practical since the drivers may require updating. Moreover a hardware failure could exist and in this situation the expertise of a hardware expert is required.