have the Thermaltake riing 360 plus and I'm in the same boat I've tried everything I could. I switched out cables thinking that might help, I've reinstalled the software, I tried switching the fan ports, I also plugged in a speaker into the 9pin usb and the speaker started charging, I have also ran a cleaner on my computer and no LEDs.
Im running a strix 360E mobo with a 1080Ti.