I had just setup VNC Viewer successfully for once. I shutdown my pi 2 then reconnected the pi camera cable that had fallen out. Now the HDMI is not working. I tried the same cable on 3 screens then a new cable on the same screens. Nothing will get it going.
Could this have been caused by disabling the PolicyAuthentication Agent through the command lxsession-edit? Or has the many a times unplugging my pi with the green light on as a way to restart the HDMI screen load out finally fried my pi rendering it junk?