How to Fix USB Not Recognized – Fix Unknown Device USB Port

Getting a USB device not recognized error whenever you plug in a USB Flasdisk, USB mouse, USB keyboard, USB Printer or other USB device? you see see Unknown Device in Device Manager? How to fix USB device not recognized error in windows xp or vista? Not need to reinstall driver and it’s easiest way to fix  USB device not recognized in windows (XP/Vista)
before you follow the step make sure and check out all USB drivers are installed in the system by system properties > hardware > device manager, if all usb driver are installed but you still see “USB device not recognized”,  just follow this step:
Restart Motherboard (motherboard is where all of hardware of the computer is connected to, including the USB ports) how to do? restart or shutdown computer from “shutdown/restart button” computers not really turn off because the motherboard still powered, it’s mean motherboard not realy shutdown. To restart motherboard, after you shutdown from “shutdown button” UNPLUG power cable computer from the power supply, just wait 30-60 seconds and plug     it back in, turn on your computer and try to plug-in your USB device, if you are lucky , it’s work for you and you’ll not see  USB device not recognized,
all USB Device will recognized. I’m lucky man, it’s work for me!