Computer will not POST with new RAM installed in two slots

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Brumfondl

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#298764 14-Jul-2022 14:44

Setup:

Mobo: Asus Prime X470-Pro

CPU: was Ryzen 2700X - Upgraded to 5800X3D

RAM: 16GB (2x8) DDR4 3200 CL18

Video: Asus TUF 3080OC

Issue:

I upgraded my CPU as you can see above. That is working fine with the setup listed. At the time I grabbed the CPU I also bought a set of

G.SKILL Trident Z Neo RGB F4-3600C16D-32GTZNC 32 GB RAM (2X 16GB)

The RAM is on the QVL for the mobo and I assumed that all would be well. Alas, I can use one stick, or the other, of the new RAM but the computer will not POST with both sticks in, no matter what slots they are in. I took it back to PB Tech and they reckon the RAM is fine but I still cannot get both sticks to work when plugged in together. I have tried wiping the CMOS to see if that was the issue but it did not help. When I turn the computer on with both sticks, everything lights up but that is all. No beeps or anything. Also tried the latest and previous BIOS.

Any suggestions would be appreciated :)

Dynamic

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#2941858 14-Jul-2022 14:56

Check the System Memory page in the manually carefully for clues or tips. I couldn;t see anything with a quick look, but you might.

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/PRIME_X470-PRO/E13883_PRIME__X470-PRO_UM_WEB.pdf

Do you have the latest BIOS? Maybe set the BIOS back to factory settings?

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Brumfondl

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#2941864 14-Jul-2022 15:10

Tried the latest and previous BIOS (only ones that support the CPU). Both were restored to factory defaults. I also had no luck in the manual :(

Gordy7

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#2941877 14-Jul-2022 15:16

Have you tried testing without the graphics card?

Do you see both Ram sticks in the BIOS?

I have just put together a Prime Z690-A with 2 Ram sticks. Bios does not show POST/Logo when using onboard HDMI. Windows eventually boots up. POST/Logo does show up ok when using onboard Displayport. My issue has been escalated with Asus.

Gordy

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ratsun81

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#2941959 14-Jul-2022 17:39

Clutching at straws, are you using the correct slots? Dual channel must be used in the correct slots....

Quick check of the user manual for your motherboard says slots A2 and B2

Also assuming you are only using the new ram and not the old + new together.

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Brumfondl

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#2941972 14-Jul-2022 18:18

Sadly it is a CPU not an APU, so if I take the GPU out it still won't post, though I guess I might get a code saying no GPU available. The screen does not turn on when both sticks are in (and I have tried any and all combination of slots, including A2 and B2 and it says in the manual). When I use only one stick the computer works without issue, and my two sticks of DDR4 3200 also work without issue.

Gordy7

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#2942005 14-Jul-2022 20:39

Your hardware specs look ok and you have checked the QVL.

Maybe time to discuss your issue with Asus.

Gordy

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1101

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#2942124 15-Jul-2022 11:07

check here , g.skill configurator for that MB

https://www.gskill.com/configurator?page=2&cls=1529635169&adSearch2=Tested_Latency%C2%A714-14-14-34&manufacturer=1524725352&chipset=1532079592&model=1532079621

It may just be a bug in the MB firmware ?

If it doesnt POST , thats a serious compatibility issue
if so , you dont have any options. if it doesnt work it doesnt work.
Occasionaly you get MB's that can be a bit fussy with RAM

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Brumfondl

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#2942255 15-Jul-2022 15:38

Thanks for the Configurator link. It only shows RAM up to 3200, which is what the MB originally supported when it came out, but it is meant to take higher speeds now, and the RAM is on the QVL list.

May well be time to have a chat with ASUS :/

shrub

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#2942277 15-Jul-2022 16:06

Brumfondl:

Thanks for the Configurator link. It only shows RAM up to 3200, which is what the MB originally supported when it came out, but it is meant to take higher speeds now, and the RAM is on the QVL list.

May well be time to have a chat with ASUS :/

Should still post with non qvl ram as it will just run it at 2400 or 2666 until you enable XMP.

the 5800x3d is a brand new chip so you need bios version 6024 or preferably 6042. After updating bios with the 2700x try a clear CMOS then change the CPU

Brumfondl

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#2942284 15-Jul-2022 16:25

shrub:

Should still post with non qvl ram as it will just run it at 2400 or 2666 until you enable XMP.

the 5800x3d is a brand new chip so you need bios version 6024 or preferably 6042. After updating bios with the 2700x try a clear CMOS then change the CPU

This is what I did before installing the new CPU and RAM. The computer has no issue with the CPU but if I put the RAM in it just sits there with lots of pretty RGB and no video out or beeps to tell me something is wrong.