Hello,
Is there a way to use integrated graphic card on mobo instead using DVI-D from actual graphic card while mining?
Yes, however if is intel IGPU then you need to set your cards with their actual drivers video display on them then after you set up you turn off and switch to your intel igpu driver video display, if you are using igpu from amd and your gpus are from amd then no need to do anything, the driver matches both gpus.