Razer Blackwidow X Chroma leds indicator issue

Hi, yesterday i notice an issue with the leds indicator in upper right corner of my blackwidow X chroma. The problem happen when press num lock key. The white led on "1" doesn't light up but the white led on "G" (the last led indicator) start to flashly. The led on "G" (gaming mode) work well when use combo key (FN+F10). The only problem is num lock led that doesn't light up in any way but when pressed the white led on "G" start to flashly... Someone has this same issue??? Can anyone help me? Ps: I tried to unplug and re-plug the keyboard: nothing Uninstall and reinstall drivers or synapse software but nothing Plug and install only keyboard driver on another pc but nothing Here is a video (I can't upload because the file is too big) https://www.dropbox.com/home/Applicazioni?preview=IMG_6390.MOV