Quick update. Read this
http://vip.asus.com/forum/view.aspx?SLanguage=en-us&id=...
What I noticed, is the system would post & boot with one stick of memory, or even dual (however not in dual channel mode)
Memory controller is in the cpu...err...wait a tick...
Read the post linked above, one guy released some clip tension on the cpu cooler.
I am using the standard shipped amd cooler, removed the chip, replaced & replaced the heat sink, however did not lock it fully and...presto...
Posts & boots with all 4 sticks...what a STUPID problem...