Gx780 - klm light won't turn on

hello to all,
I give up... i really don't understand how to turn on led lights on keyboards....
Some suggest how to light up?
Thanks
Emy

It says it depends on region whether it has backlit keys or not.
• LED backlight keyboard (limited regions)
http://www.msi.com/product/nb/GX780.html
It shows how to use it on the same page through the keyboard LED manager.

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Gx780 - klm light won't turn on

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