I noticed on my L590 that the light indicators don't turn on/off correctly on caps lock, numlock, etc. Usually when I click the button, the light doesn't turn on (the button works anyway). Sometimes they turn on by themselves and start blinking (turning on and off). When the lights turn on, the correct ones do so, so it seems it's not randomly lighting them up, but they don't get power most of the time. Backlit on keyboard works fine. Other indicators that aren't on keyboard work correctly (power button, charging, etc.) I updated BIOS and installed all possible updates, also tried reinstalling keyboard drivers.