[solved] B650M/HDV.M2 BIOS memory stability issues

RAM support is a tricky beast, particularly since the IMC is located on the CPU
on modern CPUs. This means any change to the IMC or a CPU quality issue adversely effects
RAM compatibility. Another major issue is that RAM manufacturers will often change
the components of a particular model of RAM without warning or notification. It's
not uncommon to see 2 RAM modules of the same model number have completely different
physical RAM chips on them. So long as the RAM chips meet the technical specs
of the model they will change them (usually due to availability issues). I am
sure you can guess that this also hurts compatibility.

Fairly often, unless you are seeing a lot of other people with your board model
reporting the same issue, the problem is coming from the CPU not the actual board.
I have a brand new out the box 3600 that never worked with anything over JEDEC
speeds on any board I have tried it in. It's memory controller was borderline bad
right out the box. Unfortunately it had been sitting on a shelf for over a year
before I tested it so I missed my return window and AMD refused an RMA citing
that it worked as intended at it's rated RAM speeds.

As I said in response to your reply in essential's thread, make sure your support
ticket went through and that you received the automated confirmation email.

When the MB trains memory, what does it do? I just get a black screen for 30 minutes or so. There's no indication training is taking place. Then I hard boot, it goes to boot Windows and immediately encounters an error. Then they system restarts to the Asrock boot screen and stays there for another 30 minutes before I finally must revert back to 1.30 AS05 FW. Might it be the 670E will not accept training options like the B650?

M440 wrote: mrbill wrote: Training isn?�t working for me. - screen stays black for 30+ minutes. Nothing works for me beyond. FW 1.30 AS05. update the ancient bios to the most recent 2.10 (as of today). Repeat what you did for the newly updated bios

As I said, nothing works beyond FW 1.30 AS05. FW 2.00, 2.02, 2.08 and 2.10 all fail and will not train with memory on the QVL which obviously has not been supported since 1.30 AS05. Try to train and the screen stays black for 30+ minutes. Let it boot right into Windows and an immediate Win error occurs.

Training isn?™t working for me. - screen stays black for 30+ minutes. Nothing works for me beyond. FW 1.30 AS05.

Xaltar wrote: Short of a reply from ASRock_TSD or someone testing it out there is no way to know at this point. Generally, if the beta passed testing it will simply be relabeled and uploaded as a release version. If there were any bugfixes made then these will be added to the final release too. Which is true here I can't say. You could open a support ticket and ask directly. Sorry I couldn't be of more help.

Yes thats how I understand it, just wanted to make sure. Thank you

Anyway I decided to take a look again on this and found a fix.

I needed to set all the training options from default to auto. I've set the first option (DFE read training) to enable in the main timing menu.