I accidentally changed the display setting on my mac mini to 1080p. As soon as I did this, it went black. I wasn't thinking, ... the TV is only 720p. And so, now I am trying to change the setting back to a lower resolution but all I have to work with is a black screen. As the computer is starting up, I see the apple screen then it goes black. I have tried "safe" mode by holding shift but it has gotten me no where. Anybody have any ideas for me???