Contacted Dell Technical Support today and got the following information - this issue is affecting the 130, 230 and 330 series - draining power on the server with the power button will get it to post correctly the next power up - a BIOS update to correct this issue is in the working and scheduled Q1 2017  Hope this helps.  Not deploying any more of these until issue is fixed.
Installed three PwereEdge T330 servers for three different clients in the past few months.  They have 16GB, 24GB and 32GB memory, respectively.  All three exhibits the same problem: - when the computer is restarted(automated), it stalls out at the POST with error message "Memory is detected, but is not configurable."  Nothing will happen unless user reboots it physically with the power button.  The error will show up in the log of Dell OpenManage. I have updated the BIOS, iDRAC firmware, Chipset, etc. .Re-seated the memory modules as well but still behaving the same. This is unique only to PE T330 because I have a few T320, T310, and T410 with no such issue. Please help.  Thanks. 
PE T330 servers - Memory is detected, but is not configurable.