I do have a gpu on board "Intel(R) HD Graphics" and it works when i unplug dedicated gpu but can't make them work together maybe it's bios limitation can't enable options in bios and my motherboard is Gateway Dt71 already try their new bios version of 2012 -__-.
My cpu is i7 2600
Yeah Furryball it depend on the motherboard, some allow the integrated gpu to work aswell as dedicated one same time, not the case for me unfortunatly
Thank you Apostlekin for encouragement
But my motherboard sucks, i already apply there second and final flash bois 2012 -___- nothing changed, instead to buy another motherboard just to free some ressources better buy another graphic card but it's not the time to buy anyone now, let's see when my 25mh/s will brough me a new graphic card (i think the exact time when i'll lose the first one xD)