Sometimes it can be turned on just by touching the touchpad, but sometimes, I have to press the keyboard backlight button (f7) again. I think there is nothing wrong with the lights as they do light up for a second or 2 when i first turn on the. Not sure what i did previously but now my keyboard backlights seems to be permanently off, I have tried using the Fn+F3 and Fn+F4 keys to turn up the keyboard backlights but to no avail.
#Change keyboard backlight color dell laptop windows 10