ASRock X570 Taichi RAM issues

Hello all,

I've recently bought a ASRock X570 Taichi and a AMD Ryzen 5950X to upgrade my previous setup an ASRock X470 Taichi & AMD Ryzen 2700X.

The RAM I used the ones I had before, 4x GSkill FlareX for AMD DDR4 @3200MHZ

When I tried to boot up the new rig it kept restarting. After reading a bit, the problem was the BIOS version, that it didn't support the CPU.

Put the 2700X in the rig, booted up. Updated the BIOS to 4.0 (via FlashBack), booted up with the 2700X, with the 5950X kept restarting.

I've downgraded the BIOS to 3.40 (via FlashBack) and the rig booted up with the 5950X as well.

The problem that I have now, it's that my PC recognizes only the RAM installed in the A1 and A2 slots and the ones from B1 and B2 not. Tried to switch them between them and nothing changed.

Should I update the BIOS to another version? Which version should be ok for the CPU as well?

Is there something else that I should look at?

https://ibb.co/dL23Fzk

Hi muziqaz, thanks for the reply

I used flashback to flash 4.0 because that's what I understood from the BIOS support page on ASRock site

*If you use Pinnacle Ridge or Picasso, please use ASRock Flashback function to update this BIOS.

I had the 2700X at that time so being Pinnacle Ridge that's why I flash it.

Then I removed the 2700X, put the 5950X and it didn't start, so I flashed with flashBack the 3.40.

Regardless, I followed your advice and strated updating the BIOS version by version with clear CMOS between for each.

3.40 -> 3.60 OK
3.60 -> 3.61 OK
3.61 -> 3.80 NOT OK

The system kept restarting on it's own, no boot, no BIOS. Error on the motherboard 0d.

Searched a bit over 0d and found

0d     Problem related to memory, VGA card or other devices. Please clear CMOS, re-install the memory and VGA card, and remove other USB, PCI devices.

I will try to remove the memory from slot B in order to install the BIOS but I don't think this is the issue here as it worked with the 2700X on 4.0 Version.

Do you have other suggestions?
Thanks!

3.61 works fine, 3.80 gives the 0d error.

I've tried switching all memories on the A1 A2 slots they work. I put the in my old rig with the X470 Taichi, I get 32GB RAM, they all work in BIOS, all 4 slots.

In Windows task manager I get 16GB only. In CPU-Z I can see all 4 slots/channels, I can navigate to all of them.

also have a skim through this thread:
http://forum.asrock.com/forum_posts.asp?TID=18010&PN=1&title=asrock-taichi-x570-issues

It might have some suggestions to try ;)