I have one of the newer model Dell Inspirion laptops. How do I turn off the light that accompanies the power button and the charge light on the front. I'm able to turn off my backlit keyboard, but these two other lights are quite bright and annoying when I'm trying to play movies in a dark room.
The power led and the leds on front are also used as diagnostic indicators. If there is any hardware issue on the machine, these leds help isolate the source of the issue. Hence, there is no way to disable the leds from turning on, as they would be connected to a cable soldered to the motherboard.
Download the service manual / specifications for a better understanding of the machine - http://dell.to/1n3X2po - enter the service tag and download it from the Manual section.
Write me a private conversation with the service tag and your contact details(Name and Email) for case records.