All of the sudden, when I turned on my pc this morning, it says no signal to displayport. It worked flawlessly last night. If I hook the displayport cable up to another monitor, that monitor works fine. If I hook the monitor that says no signal up with an HDMI cable, that works fine. It almost seems like my monitor's displayport isn't working anymore. I did a clean install of the latest nvidia graphics drivers and that didn't fix.