Phelper,

I would power off the server, remove the ac cables, then hold power for 20 seconds. After doing that then remove A3 and verify there is no damage or debris in the slot or with the dimm. Once you do that then swap the removed A3 dimm with another in the server and then restore cables and power to verify if error followed the dimm or stayed at slot A3. 

Let me know.

Hi Chris, the error did not follow the DIMM.  I swapped A1 and A3, but for some reason it's still complaining about B3.

Thanks!

Sorry I left that out of the reply. Swap B3 with another dimm in the server as well. 

Swapped the DIMM in B3 and B1, and the error stayed with B3.  Error has always reported B3.

Moved B3 and A3 to B9 and A9 respectively, and despite no memory in B3, the system continued to complain about the unpopulated B3.

A3/A6/A9 & B3/B6/B9 memory removed, system still complaining of error on B3.  

Is there somewhere in BIOS I should be configuring?

Funny thing is, it always fully recognizes my the full amount of memory installed.

Clear the hardware log and then we will clear the NVRAM, you do so by powering down the server and moving the NVRAM jumper seen below

 Once jumper is moved then add power to clear NVRAM. After done then power down and restore the jumper to its original location. 

Let me know if anything changes.

Hi phelper, The forum may be old, but since you installed the x5690 on the T720, since the x5690 consumes 130w, did you make any changes to the bios so that it would recognize and/or deliver the correct watts? Hopefully you can help me. thank you!