X399 Taichi won't boot with multiple RAM installed

Sorry for the date, in the bios you let the overclocking to auto, should be disabled.
With windows10 : if start does not work try at least 5 times cause windows will show recovery console at some stage. And funny enough on my as rock x399, just exiting the recovery console and the system booted UEFI fine.

Be careful with the TR socket not meant many for much swapping.

To bug fix a system, just video card no ram and CPU so see if the BIOS at least can start the BIOS= CPU working and video working.
Insert one dim and boot up again.

As soon windows loads, let it go to the desktop and start windows update cause it needs to load AMD chip-set firmware , drivers for video and audio.

Then start a dos prompt and enter sfc /scannow
Cause if there is a failure on the disks sfc can fix that but it takes a long time.

If sfc finds nothing shut down. But if SFC reports bad clusters do keep an eye on it.

Shut down anyway insert the second dim and boot up. And windows should load fine.

New CPU arrived today. Just installed - still the same problem. about to do a CMOS clear and see if it helps, then an OS reinstall and see if that helps... but I doubt it.

Reason I went for the CPU first: It was an open box CPU from NewEgg, so it could have been mishandled by previous purchaser - most likely culprit. In fact, I know for fact that it had been popped out of the carrier frame, and re-inserted in 180 degrees opposite - triangles did not line up - if it was ever installed like that who is to say perhaps the MCU in the CPU could have been blown.

But it turns out no... it was probably fine. SMH, FML.

which part to pull next. Could be the RAM, could be the board. I may ask my friend to borrow his RAM and install both sticks in my board and see if it works. If so, then the issue is not the board. If not, then the issue is probably the board.

Seems as good logic as any to use.

Only update is that I have RMA'd the CPU (no restocking fee due to some particular circumstances as far as I could tell), and new CPU is on the way. Arrives 1/16. If that doesn't work, I'll RMA the RAM... and at that point I will have subbed out Motherboard, CPU, and RAM. I doubt I could swap out anything else that matters!

We will see!

I found out - windows setup allocates a large RAM disk as soon as you start the installer. The proof of Linux having an issue would be if I could create a 20 GB ram drive under Linux and then start to dd if=/dev/zero of=/mnt/ramdrive ??and wait to see if as it slows up an error creeps in - slowly or otherwise - as Linux allocates space and uses it.

That said though, I'm rather suspecting the memory controller in this CPU is borked??and am thinking to have Newegg replace it.

Update:

• I downloaded Ubuntu 18.10 onto a thumb drive booted with all 32G in the system, no issue.


• While in Linux, I used fdisk to remove partitions from the NVMe and blow away the existing windows installation. The spinning disk appeared to have no partitions in GParted.


• I downloaded memtest86 v8.1 and put it on a USB, but the USB wouldn't detect in the boot choices menu as UEFI mode, and so I couldn't get it to work


• I downloaded new windows installation media and put it on a 64 USB3.


• I Attempted to reinstall windows without removing RAM (32GB). Same fail as always. 0xC0000221, Failed to find ntoskrnl.exe


• I used the built-in windows memory check since I couldn't use memtest86 at that point, and after many hours it froze at 19% on pass 3:
  
  
  Original: https://ibb.co/mzBG9PK


Interesting to note that windows DID detect (and very quickly) that "Hardware problems were detected. To identify and repair these problems, you will need to contact the computer manufacturer"... but gives me no way to determine what it thinks these hardware problems ARE.... thank you so much Microsoft.

• I removed one stick of RAM, windows installed like a champ (16GB).


• Of note, when I installed windows - the spinning disk actually did have partitions on it ??so I blew those away and recreate one partition (which created an MSR partition too, I left that all alone)


• I rebooted and removed windows installation media, windows booted up no issue (16GB)


• I shut down, added the other RAM back (32GB) - windows gave the original 0xC0000221, kernel is missing or contains errors: \windows\system32\ntoskrnl.exe


• I shut down, removed the RAM that I had previously left in, windows booted up again no issues (16GB).

What am I missing here? Linux seems to not mind the RAM, Windows on this PC won't have it. Windows on another ASRock X399 Phantom Gaming with a 1920X doesn't mind it.

Could I be looking at an issue with the memory controller on the 2920X CPU that Linux is just more forgiving of?
Is the RAM really the culprit?

Either way, I need to return whatever the problem is for exchange soon - but Newegg is not forgiving of things they deem returned "working" (15% restocking fee) ??reason for me to go with Amazon next time, I guess!

I really wouldn't mind if ASRock_TSD would chime in here too...