Ok, I did steps 1-3, was able to manually detected 1 fan, and kept adding until I had 4 fans and 1 pump. Nothing lit up but the correct things are listed for the correct ports. Updated to 5, they are still there, tried auto and manual detect in 5, still would not find anything. Regardless they are there.
I did your power down after every change.
fwiw, in SDK LightingService.exe is listed now, but no help trying to run from armoury crate either.
all detected under 4.33
Still detected under 5.14.93
I have a 14 year old using this computer quite a bit. I'm quite strongly tempted to flash C drive, and re-install windows. I don't know that he hasn't put something on that's conflicting, but this is kind of ridiculous amount of troubleshooting! 🙂