Notebook won't configure plug-in monitor

[MR ZenWiz]

My Asus N75SF recognizes that a monitor (HDMI TV) was plugged, but it
fires off 4-8 copies of the Display configuration app, none of which
recognize that monitor.

I haven't tried booting with the HDMI TV plugged in yet, but I'm
wondering if it might be a hardware issue.  I didn't see anything in
the BIOS that might be related.

I did try to reset the autoconfigure box of the Display config app -
no difference.

Any clues where to look?

Thanks.
MR