The power LED turns on, but the screen remains entirely black with no fan spin.
Power off the laptop, unplug the charger, and remove the bottom base cover. dell latitude 3420 bios bin file
Check your clip orientation. Pin 1 on the chip (marked by a small dot or indentation) must align with Pin 1 on the programmer. If it still fails, the chip must be desoldered from the board to cut off motherboard interference. The power LED turns on, but the screen