Question ASRock B650M Pro RS and 8500G only recognize 1 DDR5 RAM at POST

[albertkao]

My CPU is AMD Ryzen 5 8500G.
My ASRock B650M Pro RS motherboard BIOS is 3.10.

I put the TeamGroup T-FORCE VULCAN Z DDR5 RAM 32GB (2x16GB) 5200MHz at the DIMM slots:
A2
B2

I have only one TEAMGROUP MP44L 1 TB M.2-2280 PCIe 4.0 X4 NVME SSD.
I put it on the gen 5 SSD socket (M2_1) but it prevents the POST screen from appearing, i.e. only a blank screen appear, so I remove it for now.
Then I get the POST screen.

However, ASRock B650M Pro RS and 8500G only recognize one DDR5 RAM at the A2 slot but its speed is at 4800Mhz, not 5200MHz.
The other three slots are "Not Present".
What do I do now?
Do I remove and reinsert the DDR5 RAM at the B2 slot until it is recognized during POST?
Do I put the gen 4 SSD on a gen 5 SSD socket (M2_1) only after both DDR5 RAMs are recognized during POST ?

 

[Ralston18]

How long are you waiting?

This motherboard?

https://download.asrock.com/Manual/B650M Pro RS.pdf

(Verify that I found the applicable User Manual.)

First read/review the entire User Manual. Check everything as you read through.

Pay close attention to all fine print, details, warnings, etc.

RAM is presented on physically numbered Pages 25-26. Check that the RAM is supported, correctly installed, and configured.

Check BIOS as well.

 

[albertkao]

How long are you waiting?

This motherboard?

https://download.asrock.com/Manual/B650M Pro RS.pdf

(Verify that I found the applicable User Manual.)

First read/review the entire User Manual. Check everything as you read through.

Pay close attention to all fine print, details, warnings, etc.

RAM is presented on physically numbered Pages 25-26. Check that the RAM is supported, correctly installed, and configured.

Check BIOS as well.

Yes. You found the applicable User Manual.
The POST screen appeared 10-15 seconds after the computer is turned on.
Then it stayed the same (was unchanged) after a long time (more than 30 minutes).
Is there a way to change the "RAM training" time?

 

[Ralston18]

Not that I am aware of.

In any case , the process needs to complete.....

FYI:

Memory Training

https://www.clrn.org/what-is-memory-training-ram/#google_vignette

That said, 30 minutes is likely some other problem or combination of problems.

My immediate suggestion is to take another look at the build starting with Section 2.14 (Page 50)
and then all of the following Sections include Wifi install.

Doublecheck it all.

Objective is to rule out errors of omission or commission.