Question All RGB lights suddenly stop working, but fans still working

[Maverick1005]

All (case and additional RGB) suddenly stop working after starting PC. Connected to 2 controller, one came with case, another bought separate to additional fans. All connections OK . Fans blinking in a second when I starting PC and that's it. Any ideas?

 

[JohnBonhamsGhost]

include make & model of all components.

and what software are you using to control available LEDs?
and have you checked BIOS for RGB effects/options?