I recently had my motherboard die on me so its off on RMA, for the time being I am using a spare pc with one of my 270Xs in it. When trying to use my tv as another monitor the display is black and white and the sides and top and bottom are cut off, I didn't have this issue with my old system.
So far I have
Reinstalled the video drivers
Swapped HDMI cables
Tried a different HDMI port on my tv
Display is still black and white and cut off. If I switch the resolution from 1920x1080 to 1280x720 the display fits the screen properly but it is still black and white. I have not swapped out the 270x with my other one to see if that is the issue but I'm guessing that that should be my next step.