yup. One of my first threads.
Hook up a regular monitor to your computer and change the output resolution to something other than what it is at now.
Probably 800x600 right? Change to 640x480 or 1024x768 and that should fix it.
It drove me crazy for a while.
I will find my thread and post a link. Man that sucks. Although in a slight way I am happier that I am not the only one.