It looks like you have a bad board a single module should work in the second slot. You could try adjusting the command rate though and set it to 2T (looking at your manual I think they call it MA timing) and then try it again.
Looks like I in fact have odd memory. As it turns out the Patriot PSD22G80026 2GB memory module is rated at 800 Mhz when run in single channel, it has to be dropped to 667 Mhz when run in dual channel.
The board will try to run it at 800 Mhz and of course it will fail to boot. You have to manually set the one stick in Bios as 667 speed memory, THEN install the other module.
I learned all of this after I of course had RMA'd the board for the 2nd time (first one was legitimate DOA)
Guess that's what I get for sorting by "Lowest Price" on Newegg... but it was a budget system build.