X670E ProArt BIOS version 3205 will not complete memory training with any EXPO profiles

[Uro666]

Hello,

After upgrading my ProART X670E-CREATOR WIFI motherboard to the latest UEFI/BIOS version number 3205 the system fails to complete memory training in any available EXPO profile option (EXPO 1| EXPO 2|EXPO Tweaked) provided in the UEFI and therefore fails to complete POST and fails to boot my OS.

When in this state the only way to get the motherboard back in to a state to be able to access the UEFI/BIOS settings again is by shutting down the PC, disconnecting it from power and resetting the CMOS via the header pins, otherwise the motherboard sits with the DRAM debug LED lit in a memory training state ad infinitum.

When I leave the DOHC/memory profile set to Auto (which uses the DIMMs JEDEC timings) the system will complete memory training in less than 3 minutes and POST/boot with this UEFI version - which is the behaviour I had with previous UEFI versions with EXPO profiles enabled and I was expecting with this version, but alas this is not the case.

Obviously this is a massive regression from the prior UEFI/BIOS version(s), I would maybe expect this with a BETA UEFI/BIOS version, but this is NON-BETA UEFI/BIOS from the motherboards support page and I was expecting stability consistent with prior NON-BETA UEFI/BIOS upgrades.

I am reporting this to alert you to this issue as I searched and could not find any other reports on this regarding this specific motherboard, although there are similar reports involving other motherboards I did not want to hijack those threads.

Please advise of any suggested fixes or newer UEFI which has this regression fixed.
In the meantime I will attempt to roll back to the previous UEFI/BIOS version 3112.

Relevant system components:

MOBO: ASUS ProArt X670E-CREATOR WIFI
UEFI/BIOS Version: 3205
CPU: AMD Ryzen 9 7900X
MEMORY: Corsair VENGEANCE 64GB (2x32GB) DDR5 DRAM 5600MT/s CL40 AMD EXPO Kit.
MEMORY SKU: CMK64GX5M2B5600Z40 (Memory has been on the mobo's QVL since launch).

[heNNa]

I have the same/similar issue with the 3205 BIOS on my ASUS ROG CROSSHAIR X670E HERO.

Ever since the update to 3205 my PC won't shut down properly so I have to force it by holding the power button for 5 seconds. After that, the PC doesn't post until I unplug it from power, plug it in again and then start. I run the Memory on DOCP I.

@Uro666 Did the rollback to 3112 work for you? 

CPU: AMD Ryzen 9 7950X3D (Raphael, RPL-B2)
4200 MHz (42.00x100.0) @ 5050 MHz (50.50x100.0)
Motherboard: ASUS ROG CROSSHAIR X670E HERO
BIOS: 3205, 07/15/2025
Chipset: AMD X670E (Promontory PROM21L.1)
Memory: 98304 MBytes @ 3200 MHz, 32-39-39-80
- 49152 MB PC51200 DDR5 SDRAM - Kingston KF564C32-48
- 49152 MB PC51200 DDR5 SDRAM - Kingston KF564C32-48
Graphics: NVIDIA GeForce RTX 4090 (AD102-300/301) [InnoVision Multimedia]
NVIDIA GeForce RTX 4090, 24564 MB GDDR6X SDRAM
Drive: Samsung SSD 870 EVO 1TB, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: ST12000NE0008-1ZF101, 11718.9 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: Samsung SSD 860 EVO 1TB, 976.8 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: ST6000VN001-2BB186, 5860.5 GB, Serial ATA 6Gb/s @ 6Gb/s
Drive: Seagate FireCuda 530 ZP2000GM30013, 1953.5 GB, NVMe
Drive: WD_BLACK SN850X 4000GB, 3907.0 GB, NVMe
Sound: NVIDIA AD102 - High Definition Audio Controller
Network: Intel Wi-Fi 6E AX210 160MHz
Network: Intel Ethernet Controller I225-V
OS: Microsoft Windows 11 Professional (x64) Build 26100.6584 (24H2)

[Uro666]

Hello

I rolled back to UEFI/BIOS version 3112 and it is now exhibiting the same behaviour as 3205 is; That is that it will not successfully complete memory training with any EXPO profile selected (Each time I left it the full 15 minutes despite every previous memory training only taking a few minutes to complete).

Only by leaving the UEFI Memory profile set on "Auto" does the training ever complete and the board will then complete POST and boot into the OS using the JEDEC timings from the memory SPD - each time when attempting to use any EXPO profiles the only way to recover back to being able to access the UEFI/BIOS setup menus is a CMOS reset via motherboard pin shorting - the motherboard effectively gets stuck in an EXPO training loop that never completes and the only way to break out of that loop in order to get back to the UEFI/BIOS configuration menu is by powering the machine off and resetting the CMOS.

Whatever irreversible changes ASUS have done with the 3205 UEFI patch with this board is preventing the EXPO profiles from being enabled on both 3205 and 3112 (after having previously applied 3205).

I guess I will have to purchase a new memory kit to rule out these QVL sticks have not gone bad and if they have gone bad then the only thing that changed state in this machine is the UEFI/BIOS version itself,  if the changes made to the UEFI have cooked the sticks from being able to boot with EXPO profiles then that is a big problem.

[Uro666]

Hello

Today I tried using the latest official UEFI/BIOS version 3304 published on 2025/09/25 from the motherboards support page:
https://www.asus.com/motherboards-components/motherboards/proart/proart-x670e-creator-wifi/helpdesk_...

With this UEFI 3304 version flashed the motherboard is still producing the same results as 3205, that is it will not successfully complete memory training on reboot with any EXPO memory profiles configured and thus will not start/complete POST with the only way to recover the board to be able to access the UEFI/BIOS again being a CMOS pin reset, even reverting to previously working with EXPO UEFI version 3112 is no longer working with EXPO profiles after having flashed 3205 to the board, the only way to have this board boot successfully now is with the UEFI memory tuning profile configured to "Auto" setting which loads the SPD JEDEC profiles from the memory sticks which defeats the entire purpose of EXPO.

I have ordered new memory kit to rule out my current ASUS QVL verified Corsair CMK64GX5M2B5600Z40 EXPO kit being an issue, the only thing that changed in this system when it went from working with EXPO profiles configured to no longer completing memory training with EXPO profiles configured is the UEFI/BIOS update.

Perhaps some ASUS update there is broken, maybe the ASUS embedded memory profiles are overriding the SPD of this kit? or the 3205 version broke my memory kit from being able to sync with CPU's memory controller with the EXPO configuration enabled? - I can view the SPD data in the UEFI and it shows both the JEDEC and the EXPO profiles being readable/available and this hardware combination has worked flawlessly since this motherboard and memory kit launched in October 2022, that is up until UEFI version 3205 and now also the latest 3304 version.

[mdzcpa]

How long have you waited on memory training to complete?  I may have missed that in your posts.  out of the several recent builds with 600 and 800 chipsets, come complete training in 45 seconds and some need 15 minutes or longer. 

[Uro666]

Hello,

I stated in my reply 2 weeks ago to @heNNa that I left the it 15 minutes (which was a minimum) and highlighted that fact within braces in my first paragraph, perhaps re-reading what I previously wrote may be beneficial.

But to reiterate again: From purchasing this mobo from its release date and up until UEFI version 3112 and prior UEFI versions I had a sub 3 minute memory training time which was consistent for years over multiple UEFI versions and all this time the mobo, memory kit and cpu have remained the same.

I have left UEFI version 3205 and subsequent UEFI versions a minimum of 15 minutes to attempt to train but it never successfully completes in order to begin the system's POST, which given the prior history with this mobo, cpu and memory kit combination is an abnormality, the only time this system will successfully train memory and begin/complete POST is when the memory kit's JEDEC profiles are configured in UEFI), EXPO profiles simply will no longer boot since flashing the mobo with 3205 and even reverting to the previously working with EXPO profiles UEFI version 3112 will no longer complete memory training preventing the system from POST'ing when EXPO profiles are configured.

Whatever changes that 3205 did appears to be irreversible or has done damage to my hardware making it no longer able to complete training with EXPO profiles enabled.

The only thing that has altered in this system in regard to cpu/mobo/ram in that time is the official (NON-BETA) UEFI/BIOS versions I have flashed, no cpu/mobo/ram hardware changes have been made aside from doing the "reseat the memory sticks" regimen which never did anything in my experience other than ticking a tech-support box.

A new memory kit should arrive in the next few days, I will see if it can achieve a successful memory training and completing POST in order to boot with EXPO profiles on this post-3205 motherboard.

If this does not rectify itself then whatever 3205 did to my mobo has hosed it, I shall be opening a support ticket after this new memory kit arrives and I have tested it with working EXPO profiles or not as this ASUS UEFI 3205 update has been the root cause of this costly issue.