Minibook X backlight of the keyboard

backlight of the keyboard is always on and I can’t switch off it manually. Fn +F5 doesn’t work. Any idea?

Hi, does pressing f5 alone or restarting also keep it on all the time?

F5 alone also doesn’t work. Other functional keys + Fn are working like mute, volume, bright etc, but not backlite. Restarting many times.

Can you send me drivers for keyboard? Mayby this can help. Phisicaly key F5 is working, testing, but bot action with Fn. Or there are any setings in BIOS?