X670e-f gaming wifi / EXPO failure and BIOS update disaster

[bashlor]

Hi folks,

MB: Asus ROG Strix X670 e-f gaming wifi

CPU: AMD 9800x3d

• RAM: 2x 32GB Corsair Vengeance 6000mhz CL30 (CMK64GX5M2B6000Z30)

The system went fine for 1 month under Bios 2504 or 2604 from 13/12/2024.

RAM was fine on EXPO 1. No other OC.

I made no changes and today PC would not boot. I was in POST failure screen. After research i found out it was due to ram. I reser settings to default and PC booted again with Ram running 4800mhz.

I then tried to update the BIOS (latest) from 17/01/25 via ASUS Ez Flash within BIOS.

After the question to really start updating the pc crashes immediately and would not boot anymore.

I reinstalled bios via Bios Flashback USB Port. I removed CMOS battery before and after.

The PC wont boot now. Screen all back. Fans spinning. 

Qled is constant GREEN for boot.

Did i brake my MB? What can i do?

[Silent_Scone]

Hi @bashlor 

To confirm, can you try once more with UEFI 2704? 

[bashlor]

Hey. I tried to reinstall BIOS 2504 3x times via backside Bios Flash and did several CMOS clears. Out of magic it started again with a complete disconnect of the AC from power and let the PC sit for 10 minutes after i gave up before.

Running the RAM now on 5600mhz. looks stable so far. But i wont update bios again after this disaster.

[Silent_Scone]

Initial DRAM training following a reset CMOS can take 3-5 minutes or more depending on the memory configuration - glad you were able to get it working on previous build. 

Unfortunately not able to comment on why you're unable to flash to the latest build. You could always try redownloading the file to verify it wasn't corrupted and then use a different flashdrive.

[bashlor]

Thx for reply. Can you describe what DRAM Training means?

Will an update to newest BIOS fix my RAM issues? I dont get why it was working before and then i suddenly got the initial POST failure what made me disable EXPO profile in the first place. It worked for one month. No changes made then.

Im afraid to try another update on the BIOS since it gave me so much trouble fixing stuff. 

[AfterShock]

it's basically an extensive diagnostic and benchmark used to set memory timings. Besides your 4 basic timings that you see on the sticker of your memory modules there are many other sub timings and voltages that the bios needs to set.and it's a slow process. Seeing you have 64gb  of memory it wouldn't be out of the norm to take over 15 min to complete and when you change certain options in your bios it will force the memory to train again. I would reset bios to defaults and then power off your computer and use bios flashback to flash to the latest version and when that's done turn the pc on and just leave it be for awhile. No reason to be removing cmos batteries on modern motherboards.