Hi,
Thank you for the reply.
I have this printed information from the manual,I think the order of ram is in reverse to the quoted numbers in figure 8-11 page 180, so that DIMM1 is the most on top when you look at this table and DIMM2,DIMM3,DIMM4 follows downward direction.It also say in this page that DIMM1,DIMM2 is channel B and DIMM3,DIMM4 for Channel A, but when I placed ram and checked the BIOS,I found the reverse that is DIMM1,DIMM2 is channel A, DIMM3,DIMM4 is for channel B, I cannot explain this why they are not same order as in figure 8-11!
So the correct ram population is DIMM1, then DIMM3,then DIMM2,then DIMM4.
My issue is also different,when I placed this PC3-12800 4GB ram in DIMM1 slot, error message 201 appeared,when I replaced with PC3-10600 4GB ram no error message appeared.
When I placed thie PC3-12800 ram in DIMM3 slot and placed 2 x 2 GB RAM PC3-10600 in DIMM1,and DIMM2 no error message appeared!!!! does this mean the PC3-12800 has problem,or incompatible that the system can detects this when I placed in DIMM1 slot but does not detects when I place in DIMM3? this is my question.