For me to better help answer your question.
1) What other video input ports do you have in your monitor?
2) What is your monitor resolution?
CPU: Core i5 4690k
Motherboard: MSI Z97 SLI Krait
RAM: Kingston Hyper X, 2x4GB
PSU: EVGA Supernova B2 750W
Display: ASUS VN248H-P, 1080p, 60Hz
The monitor has HDMI and VGA. I am using an HDMI to DVI cable going to the DVI port on the card. The display is 1920 x 1080.
Can you try using a different display cable/adapter?
Try using just a HDMI cable - HDMI for the Video Card's output and HDMI for the Display's input.