Arduino Leonardo cannot install the drivers

Hi everyone!!

I bought an official arduino leonardo (i guess rsrs) and when I go to connect the card to the computer, it does not appear as "Arduino Leonardo". This should happen right?

Instead, it appears in other devices the name ATm32U4DFU.
It makes me think that the arduino did not come with the bootloader installed, or am I wrong?

The IDE is already installed
In Device Manager, I will try to update driver and install the correct driver browse inside the folder C: \ Program Files (x86) \ Arduino \ drivers and select the driver, click next....

The windows starts to install the driver but has an error: The device cannot start. (10)

I try in 3 different pcs, usb 2.0, usb 3.0, test with other cables and nothing....
Have googled a lot and found nothing that could help me ... =(

The board already installed with blink sketch?
When i plug the usb the led ON and L lights up and stay on... its rigth?

Sorry for my english ...

And thanks for help!!