Tried with Crimson 15.30, first without the hotfix, then installed the hotfix, still no good.
Now I have tried with Catalyst 15.11.1 as you suggested, but the vga still spins up.
What I noticed is, it is not related to any of the background services, tried to shut them down
one by one in task manager, and uninstalled Corsair Link too.
The water cooling module runs totally normal, only the air cooling went goes wild.
Might be worth mentioning I am using it with win7 64bit. Maybe a reinstall would help my case?
Or should I dismount the vga and mount it again?