Thanks for the answer, but this GPU is working all the time, even before I run game.
Tested it: changed to small performance and had 30 fps , while in high performance have 120 (all under shader 2.0)
I am able to change this by clickin on desktop and choose : configure graphic switch (or whatever translate it).
I have installed last drivers from HP site, others doesn't work (multi gpu conflict).
One more funny thing is that, the Regnum doesn't see any GPU but works