X470D4U2-2T Fails to Post :-(

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   Just got the X470D4U2-2T installed with the AMD Ryzen 7 3700X.  There is a sticker on the board that says the BIOS version is 3.20 so I assume it should be supported.

I have 2 sticks of Samsung 32GB ECC memory and have tried various bank configuration.  What am I missing?

I even tried with NO memory, looking for an audible beep to indicate it failed to POST.  No luck...  

Stock CPU cooler and IPMI is loading up but nothing displayed when I KVM into it.

I am at a loss and feel like the board is going to need to be RMA'ed :-(

Any thoughts?

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KoolFrank87 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Jan 2020 Status: Offline Points: 4	Post Options Post Reply Quote KoolFrank87 Report Post Thanks(0) Quote Reply Topic: X470D4U2-2T Fails to Post :-( Posted: 29 Jan 2020 at 10:18am
	Just got the X470D4U2-2T installed with the AMD Ryzen 7 3700X. There is a sticker on the board that says the BIOS version is 3.20 so I assume it should be supported. I have 2 sticks of Samsung 32GB ECC memory and have tried various bank configuration. What am I missing? I even tried with NO memory, looking for an audible beep to indicate it failed to POST. No luck... Stock CPU cooler and IPMI is loading up but nothing displayed when I KVM into it. I am at a loss and feel like the board is going to need to be RMA'ed :-( Any thoughts?

KoolFrank87 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Jan 2020 Status: Offline Points: 4	Post Options Post Reply Quote KoolFrank87 Report Post Thanks(0) Quote Reply Posted: 01 Feb 2020 at 4:51am
	Turns out it was the RAM... I had RDIMM and needed to use UDIMM.

ktingle Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 25 Jan 2020 Status: Offline Points: 4	Post Options Post Reply Quote ktingle Report Post Thanks(0) Quote Reply Posted: 15 Feb 2020 at 10:23pm
	I am facing the same issue.., what RAM did you wind up using? I am using the following right off the QVL: DDR4 2666 ECC 32GB Samsung M391A4G43MB1-CTDQ 901 K4AAG085WM BCTD Sec

penetal Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Apr 2021 Status: Offline Points: 30	Post Options Post Reply Quote penetal Report Post Thanks(0) Quote Reply Posted: 06 Apr 2021 at 1:46am
	I also have DDR4 2666 ECC 32GB Samsung M391A4G43MB1-CTDQ Tried 2 sticks, 1 stick and zero sticks. No boot, no post, no dr debug, just the heartbeat led, power led and ipmi lan led. IPMI works except it always reports as off even when it is started and the fans are spinning. I have another of these boards that has a 3600 for cpu instead and that seems to work just fine with the same ram. Also strange that it does not even report no ram when there are no sticks installed. Did you find out how to get it working£ For cpu I use 3900X, and I used IPMI to try to update BMC to the newest version (3.40 at time of writing).

penetal Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Apr 2021 Status: Offline Points: 30	Post Options Post Reply Quote penetal Report Post Thanks(0) Quote Reply Posted: 06 Apr 2021 at 3:25am
	Update: I opened up the box with ryzen 3600 that works with the same memory and noticed I had connected the atx12v1 8-pin power, I assumed this was for the new 12V atx standard, but I guess not. It now works as expected with the samsung ram.

ThreeDee Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 24 Jul 2019 Location: Billings,MT Status: Offline Points: 2396	Post Options Post Reply Quote ThreeDee Report Post Thanks(0) Quote Reply Posted: 07 Apr 2021 at 8:18pm
	I run the X470D4U with a 3700x .. I bought 2 x 16GB Nemix 3200 ECC UDIMM's for it. The setup did not post I tried just one stick in A1 .. and it posted .. I tried the other stick by itself and it would not post no matter what slot I did an RMA request and ordered 2 more 16GB sticks of a different brand, slower speed and low profile .. while waiting for these to arrive, I installed TrueNAS on a 32GB m.2 drive ..and updated the BIOS and BMC via IPMI to 3.50 and 2.20.. On a whim, I tried the "dead" Nemix stick afterwards .. and it automagically was working now. My new ECC RAM arrived and I added it to the Nemix stuff and it's all working at 2666 ..all 64GB of it. maybe the BIOS update did it .. don't know .. I seated and reseated that "dead" stick to no avail prior to the BIOS update .. Sooo .. just food for thought .. I don't have the 10GB nics, but the rest is basically the same.
	\|Ryzen 5 5900\|ASRock X570 Taichi-BIOS 4.60\|2x16GB HyperX Predator RGB 3200@3600 1:1 IF\|ASRock RX 6700XT\|2 x PCIe 4.0 M.2 Drives for OS & Games\|850 WTT Seasonic 80+ Titanium PSU\|Noctua NH-D15\|