So I have a Mac mini set up with Windows 7 only and then I have that connected to a 27" iMac with the miniDP cable. At first, during installation, I have no issues; Windows is installed and drivers are done... reboot. I start seeing artifacts, especially in dark areas (little sparkling pixels of colors--kind of like white noise except it's not everywhere and this is in color), also every few seconds the screen would flicker, and occasionally the screen would change to where the bottom of the be on top (hard to explain, but imagine a movie where the frame isn't centered and you can see the bottom of the previous frame and the top of the current one). I figured it was an issue with the iMac, so I switched back to the iMac and there are no issues. I switch back to the Mac mini and screen is still messed up. After reinstalling drivers and doing a bunch of troubleshooting, I couldn't find a solution; it even had these issue during the boot menu (where you choose the start-up disk). At that point I redid everything and it was not working. Finally I joked to myself that the cable was directional (it shouldn't be), but after changing directions, now everything fine! No more flickering, messed display, or pixellation. I switch it back the other way and issues again. So right now I have the cable connected the right way... all is good right? Not really (hence all this). My resolution is stuck at 1280x720 (which is exactly a quarter resolution). How do I fix this? Pretty much a cable direction swap allows for higher resolutions, but causes the display artifacts.