Hi [NAME] welcome to this free user to user Alienware laptop discussion forum. This is not Dell Support.  AWCC FX can be toggled off and on (FN + F12), but the power button LED remains on. Seemingly the mainboard power supply rail for the AWCC FX LED lights has failed, and a new mainboard is the fix.  Support for Alienware m15 R6 Documentation, please look at Alienware FX lighting issues | Dell US
Hi all, This happened today idk why. None of the lights on my laptop work now. The power button LED does not turn on either when I turn on the laptop. The power button light works when the system wants to throw an error like after I reconnected the battery it flashed red three times and booted normally. Everything else works fine. I tried disconnecting the battery. Reinstalled windows. Updated Bios and AWCC. Nothing works  Any fix for this?
m15 R6, AlienFX lights not working