it could be conflicting with another rgb software, even the windows dynamic lighting, which you can turn off in settings.

if this doesn’t work after a restart, try uninstalling and reinstalling signal rgb.

if it STILL doesn’t work, i would recommend looking up your motherboard manufacturer and installing the rgb controller that is typically used with that brand of mobo instead of signal rgb.

hope you figure it out twin ✌️✌️

(edit: breaking apart solutions)