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Unknown usb device error

Last response: in Windows 7
November 16, 2011 8:15:06 AM

Hello everyone i am new here. I have question to ask.
I just bought a amd phenom ii x4 955 and a asus m4a88tm le motherboard . After that i formated my hdd and installed win 7 ultimate and amd motherboard drivers. Now when i connect a usb device it shows Unknown usb device (except my mouse and keyboard) . Please help me.
November 16, 2011 8:42:38 AM

Well i have a bad bad luck. My 1st usb drive connected to usb get damaged by usb power. Now the other devices are working fine.
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November 16, 2011 9:03:11 AM

any idea how can i recover the data from a undetected pen drive
a b \ Driver
a b $ Windows 7
November 16, 2011 9:05:18 AM

Is it undetected in all ports? Do u have other PC to see if it get detected?
a b \ Driver
a b $ Windows 7
November 16, 2011 9:05:38 AM

What model name is it?
November 16, 2011 2:40:24 PM

The model is transcend jf v10 8gb and its also undetectable on other usb interfaces on other pcs. Its light didn't glow either.