Eventually,this problem has fixed by replacing the PEM board. The new PEM board part number is 0DPKTV which you mentioned in your first post on this topic,its a NTPM version match to the motherboard version. I dont konw if this is a compatibility issue between motherboard(NTPM) and PEM(TPM), or maybe it just a broken PEM installed in a good motherboard. In the first,i suspect my motherboard is broken,and now, im lucky,its good! If somebody have the same issue with me, replacing the PEM board to the same version and try it! Thanks for your help,Maria!
Recently, i bought a pem board for my R820  to use 4 cpu,but when i install all 4 cpus and dimms then power it up,stuck in configure memory with fan speed 100%, 10 or more seconds later the screen dispalys"Fatal error,cpu in socket 4 did not come out of reset".No matter how i swap the cpu and get the same error.After remove the cpu 4, system boot it up,but always show 2 cpu in post screen and bios,as if there is a cpu 4 in pem board and then can't boot and show the same error. 4 cpu with same model,4 dimms in A1,B1,C1,D1. Have anyone met this before?[IMAGE] Forgive my bad english,thanks!
R820 with pem cant not post: cpu in socket 4 did not come out of reset