I am sorry to hear you are having problems but let me help you.
Based on the problem description, it seems that problem you are having can be caused by a compatibility issue. My recommendation is to test the system without the video card.
Besides this you can install the check with the video card manufacture to confirm the compatibility with this board. Another good step is to install the latest firmware for your card.
From our side please try installing the latest BIOS update for your board: