1. Let's confirm one more time that I am using the tri-channel slots and not the dual channel ones. So there you have it, 1, 3, 4
The slots in order away from the CPU are 1, 3, 2 than 4 so for 3 channel mode you need to use slots 1, 2 and 4 as it is in your pics.
You might if got the numbers but if you say you can't get the system to boot in slot 1 then their a problem, its hard to say if its the board or CPU but its likely board.
If you have ram in slots 1 and 4 or 1 and 3 you should get 4GB not 2GB