Thank You, Mister! 

Check this - https://rog.asus.com/forum/showthread.php?129310-ROG-Maximus-Z690-Extreme-onboard-LED-Stealth-Mode-in-new-1505-BIOS-not-settingYou can disable it only by Armoury Crate or bios settings. If You can't, then must be something wrong with you...

Alright, thanks for the info.

Check CMOS Battery. I had similar behaviors with Rampage IV Extreme back in the days.

What caused this problem?