Genuino isn't recognized by pc

Hi, i bought Genuino Uno Rev3 last week but i have a big problem. When i connect usb to the computer, computer doesn't recognize Genuino (if i go to the Devices Manager Genuino doesn't appear anywhere) but the led of power is on and the orange led is on.

I changed the usb wire many times but is the same. I tested on another computer but the situation is the same. I'm very tired of this situation.

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No, i've tested with an old USB cable, but it didn't working, then i bought a new cable USB but it doesn't work...

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If you get nothing on plugin, (make sure sound is on, listen for the noise), or if you get the "hardware has malfunctioned" popup message, return it for a refund/replacement.

If you get something in device manager, and it just doesn't work, that's likely a driver issue.

Yes, i made a ticket at Store Support to replace the board