Hello, I am building my computer and my motherboard has no onboard video. Now I am struggling to figure out how to use the graphics card that I also bought. Everything seems to work fine in the computer. Fans are running the dvd drive opens and "read" what is inside, but stops after a few seconds. The graphics card is a ASUS Radeon 7770 2GB and has the led1 lighting up when I turn the system on. My MoBo is a AsRock 970 Extreme3. I tried connecting the monitor with a DVI and a HDMI cord, none seemed to work. Any suggestions on what to do now?