Actually, this happens because there is little interference from the host controller hardware, hubs Attached, Attached devices, USB driver versions, support for USB 2.0. Device or device you are using is included in the device that is vulnerable to changes in electric current and static electricity problems. One device that is often experienced this is a USB stick. If there is little current leakage in the casing which then spread to flash, flash may cause malfunction. Similarly, if there are unexpected effects of static electricity on the environment around the USB terminal. Another factor that causes the error message USB Device Not Recognized that occasionally appear in Windows XP due to driver installation errors occur, ie When a USB device plugged into the computer (maybe even during the installation process automatically) USB Driver is not installed properly and would cause the most damage on the other USB drivers.
Here are some solutions to assist you in troubleshooting the error message "USB Device Not Recognized" :
A. Use Device Manager to scan to find new hardware or hardware changes to the information. To do this, click Start> Run> Type "devmgmt.msc" (without the quotes). From the Action menu, select "Scan for Hardware Changes". This option will activate the Windows hardware detection to find the newly installed device. When finished, close all open Device Manager and Control Panel. Consider whether the USB device has been successfully detected.
2. If the above methods do not work, please Disable Power Management features of the USB Root hub. To do this, follow these steps:
Click Start> Run> Type "devmgmt.msc" (without quotation marks yah) and click Ok.
Show all entries on the Universal Serial Bus Controllers, then follow these steps for each USB Root Hub is available.
Right-click USB Root Hub> Click on Properties
Click the Power Management Tab
before Uncheck the check box option "Allow the computer to turn off this device to save power"
After Uncheck the check box option "Allow the computer to turn off this device to save power", click Ok.
3. If the above two solutions can not resolve your problem, please disconnect the CPU of any electric current for a while. Turn off the computer, remove the battery (for laptops), or unplug electrical power (for desktop), unplug the USB device you are following all the incoming power cable to the CPU and Monitor. Wait 20 to 30 minutes and then turn on as usual. Of the majority of cases, this proved successful. But sometimes the USB port is loose and there was damage to the USB port can also be one cause of failure of USB hardware detection.
I think the above solution of the three most powerful way and easy to do is a 3, Because of the two ways I have done ditas, it has not been able to solve the problem error message USB Device Not Recognized that occasionally appear in Windows XP, various ways were I have been doing such as scan hardware for changes, Disable Power Management features of the USB Root hub, Unknown Device Uninstall, Uninstall Driver, I was to attempt a System Restore. My advice from if you are having problems like me, it's good to try out a solution that only 3, but it would not hurt also if you want to try a solution for the No. 1 and 2. Please make sure the USB port on your computer or laptop is not loose or damaged, if damaged best solution is to replace it with a new USB port.
Hopefully this article useful for you who are experiencing problems "USB Device Not Recognized" like me.
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