I have just installed a raedon rx 650 graphics card. it has a dvi and hdmi port at the back of the card. I have tried to hook up two monitors one with a hdmi connection and one with a dvi connection. when both plugged into back of card, neither monitor works. when I take one out, the other monitor works and vice versa. I have bought a hdmi signal splitter switcher but it does the same thing. can I connect two monitors using the graphics card I have, and how can I do it?