My win7 computer won't recognize my uno


i bought arduino uno , downloaded ide 1.0.5
and i'm having trouble arduino uno being recognized windows7 computer. comes unknown device in the" universal serial bus control" in device manager . ihave tried use or activate driver (arduino.inf) in drivers file
and windows said it's updated after plugged out uno , plugged in, turned on leds on uno while , sign comes out said there unknown device etc.

i apologize if there language mistakes


where did buy uno?


Arduino Forum > Using Arduino > Installation & Troubleshooting > My win7 computer won't recognize my uno


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