The problem is we are dealing with things that there are only 1 of. It's 2015 and like everyone else I moved past monitors and network cables 10 years ago. So I have 1 monitor, 1 computer that takes a monitor (the Mini), 1 vga cable. So it's hard to verify that something like a network cable to be known-good.
I did try a second network cable and no-go. I only have the one vga so I can't try swapping that out (and I purchased it a month and a half ago just for this. Could possibly be the monitor, I guess, it's old but I'd rather not spend $150 on something I'm going to use a total of 1 time.
This whole situation really bums me out. It's frustrating to work with headless computers that you can't diagnose easily.