I have built a 'standard' install - no OC or otherwise. Windows 2008 R2 (though that has nothing to do with the issue).
Whenever I start the pc without a monitor plugged in it never boots. I don't hear a beep or anything. It starts, after about 10s it shuts down and restarts. It never gets as far as the POST (I guess).
If I plug a monitor in at any time, it boots fine without an issue.
How can I make it boot without a monitor. I have tried setting no halt on errors.