Ok, so Epson overnighted me a new projector. I immediately packed up the old one and shipped it back. They have a hold of over $600 on my card that does not come back until they receive the old (bad?) unit back. That should be Friday, or Monday.
Alright, so I get home, hook up the new projector and test for that pattern of lines. ITS THERE AS WELL!

No, this is not the same image from the other post. This is a picture taken of the new projector. First thing, I checked serial numbers. Did I send the new one back? Nope, different serial number, so this is the new (refurbished) one.
Alright, now, this happens even with nothing but power connected, so it’s not the computer, video card, cable, etc. I tried a different power cord, different extension cord, same problem.
So, I call my brother to run this past him. We go back and forth, and finally he goes “Could there be another light source reflecting off the lamp?” I said “No, there is nothing else lit in the room.”
But then, that got me thinking, wait a minute. 2 weeks ago, I put up two cardboard tops as templates to figure out how to cut the real ones out of wood.. Here’s what it looks like.

As you can see, there is some light that casts on the tip here. There is no way around that due to the size of the room the sim in in. However, you don’t see the shadow on the projector screen because it’s below your eye point.
BUT… could the projector be casting light off this cardboard, and that light be reflecting UP back onto the screen? You can’t see in this shot, but on the front / bottom of the cardboard that is on the FO’s side, along the edge is clear packaging tape! Which is REFLECTIVE… DOH!!!!!!!!!!! (Smack’s Forehead!)
I removed the tape and guess what… my mystery lines vanished…

You can see above, where I ripped off the clear packing tape. And the mystery lines are now gone. The oddball thing is, I left the projector ON for that one hour on the Vista login screen just before I put up these cardboard template tops.
To boot, the lines MATCHED the Vista login screen! So it seemed likely that this was burn in from that hour long view of the vista login screen… Sigh.

I’m glad it’s resolved. Many thanks to my brother who saved my ass and ended my day on a high note. (and to Karl and Ron on the FDS forums for their helpful insight and recommendations/suggestions)
Too bad I have a refurbished projector now and Epson has my brand new one.
(Smack’s Forehead again)!!!!