My f4 has no symbol. It sepouse to turn on backlit keyboard, but it doesnt. I need this function.

[Rinatush]

 i have 15-fd0016nj new laptop

[resistencia]

Hi @Rinatush 

This model does not have an illuminated keyboard and cannot be activated.

Keyboard

Full-size, soft grey keyboard with numeric keypad

[Rinatush]

Hi. Thanx for your answear. In the menu of hp they say that this model do have illuminated keyboard. Do you think i can complain? This function is super importent to me. And by the way- what f4 is for? He has no sign or symbol on it.

[resistencia]

Don't complain, I bought a model without illuminated keyboard, I don't know which one you see that claims to have it, if it is the manual it is generic and that is because in the series of that model there is illuminated keyboard. Did you verify with the seller that laptop an illuminated keyboard?

The F4 key is generally for the screen brightness.

if the laptop does not have the type key, it has no illumination.