Gigabyte keyboard: Map Win key to "Super" action

Hi!

I would like to know what is happening with my keyboard. I run Ubuntu 15.10 with a Gigabyte Force K7 keyboard, Wireless.

With any other keyboards I can use the Windows key to access the Dash, but here I can't.

Do you know how to do it? I've tried addiing a custom shortcut via System->Keyboard. But even when configuring the shortcut by pressing the key, it seems like Ubuntu even recognizing it as a key. If I press the Windows key, it does nothing. But if then I press enter, it tells me "Error, this key can't be used because it is used for other things...etc" So no clue

Thank you!

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