CPU Change, BOOT LOOP, MSI RYZEN 9

Hello,

-- For my part, I would suspect that the cooling is not effective... And particularly the thermal paste, its quality... its quantity... its application... the proper contact of the CPU with the cooling plate...

You should try discharging the power of this PC... so unplug it... no screen, no disk, no CD, no graphics card, etc... just the power supply, the case, one RAM stick on the motherboard and its processor... And a wired keyboard... and you power it on while carefully watching the keyboard lights... You hear the fans, and see the keyboard lights lit... press the shift key, the light should change state each time...

let it run like this for 20 minutes... It shouldn't stop since we’re not asking it for power... however, if it stops, it means there's a problem with the assembly and/or the cooling... Have you changed the RAM for this new CPU..?

Have fun playing..

I would be surprised; the processor doesn't have time to heat up at all, and the thermal paste is well spread out.

I have already tested without a graphics card, just the processor and RAM, and the same problem persists.

and no, still the same RAM

So you claim that with just the processor and RAM, it also restarts in a loop…??

Without Windows and without a disk..? There's something wrong... A compatibility issue... or a dedicated BIOS..?

Don't be mistaken, a processor heats up and goes into safety mode in three seconds (without a cooler).

I cleaned the thermal paste, I applied a thin layer of transparent paste, but the problem persists.

I retested because I hadn't tried without my SSD that contains Windows; indeed, with just the processor and one RAM, it seems to run without restarting.

What should I do now?
Thank you for your help.

I would bet on the RAM... not compatible with the new processor
What do you have originally?

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Euskadi Ta Askatasuna

I have 2 x 4GB DDR4 Ballistix Sport LT 2666 MHz

I reassembled my graphics card, and I just noticed that while staying in the BIOS, the PC doesn't restart by itself. In my opinion, the problem comes from Windows because as long as I don't launch it, the PC doesn't reboot

Is it possible that this is because I reinstalled Windows with my old processor?

So, now I would say to place the graphics card and a monitor and nothing more...

You start your PC and enter the BIOS... the BIOS menus should be displayed on the screen... you navigate through it, check the settings...
The goal is to see if the display works with this graphics card and that the PC does not restart... Because in this simple configuration, it is not overly demanded...

You can even after 10 minutes enable XMP mode... and see if it keeps running, without restarting... That would nicely confirm that the processor is compatible with the motherboard and the BIOS configuration... and you leave it like that for 30 minutes.

If you have a live CD of Windows PE or a Linux, you can reconnect the DVD drive and try, or USB with a live stick without a CD drive

Because the next step will be switching to advanced mode including Windows... if these steps have worked well.

Okay, I have a processor, 1 RAM stick, the graphics card, and a monitor. I started it up and I'm in the BIOS, I'm waiting to see.
What is the XMP mode and why do I need to activate it?

Are you talking about a Windows installation USB key?

After 15 minutes in the BIOS, the PC is still running without restarting.

Well, that's good news... XMP is a turbo mode designed to push RAM to its maximum speed... There is a profile for this speed, and there is a default profile saved when XMP exists in the BIOS...
It can also be called "Overclocking profiles," but in that case, you have to create it, and there is none "by default."

If there aren't any, we can do without...

In the meantime, check if you have any lit LEDs on your motherboard; there are four side by side... if so, let me know which one...

I'm not talking about Windows installation USB... but about keys with Windows PE on them, and this would be for testing on your PC with that... while waiting, you can download the necessary file and also burn the DVD or create the USB key; both are possible and explained on the site...

Here is the starting site and reading the principle of using this particular version of Windows. It does not install on the PC; we ignore the hard drive... here, the goal will not be to repair your PC (for now) but to diagnose.

https://www.malekal.com/malekal-live-cd-reparer-depanner-pc-windows/

And this link is to download the ISO file that will be burned... Click on "Download the live...." and don't worry about the 404 that appears below..
https://telecharger.malekal.com/download/live-cd-malekal/

That's it for now..

So the reference for your memory is: BLS2K4G4D26BFSB ..?? A BIOS update is necessary if your version is not already that one...

You could try this BIOS update https://download.msi.com/bos_exe/mb/7A38v9C5.zip (from 2022)

Your memory model is indeed on the whitelist

Support 1866/ 2133/ 2400/ 2667MHz (JEDEC)---> but it is on this list and does not support overclocking or XMP.
Support 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466 MHz (A-XMP OC mode) ---> this one is OK for overclocking.

You can configure it exactly in the BIOS ==> Overclocking===> DRAM Frequency == click on it in the column, select DDR4-2666 ==> save==Save and restart... you need to check that it still works..

Then, you should be able to reconnect your hard drive and launch Windows..!!!

Hello, just to close this story, in the end after testing a lot of things I took the processor to LDLC, after 5 minutes the verdict came: the processor is dead.

To you, internet user reading this topic in search of answers, you can find many English posts discussing similar issues with the keywords Ryzen 3000 and 400 series motherboard.

Good luck and thank you.

Ah ... Requiem for him.. It's the first time I've heard of a Dead processor, personally, I've never seen one, because they have tough skin and are well protected...

So then..?? Did they give you another one..??

In any case, thanks for the update..

I've read a few sites... the BIOS seems seriously implicated.... Everything's going wrong.

A brand new CPU that is dead from a functional standpoint is indeed exceptional.
With AMD, what I've seen before is broken or bent pins, but here it’s the user who is responsible...

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Euskadi Ta Askatasuna

So it wasn't new but refurbished and according to LDLC, "nothing happened" when it was plugged in, and the seller I sent it back to told me it was stuck in a boot loop, with no external damage by the way! (no bent or broken pins) Anyway, they sent me another one, and now, no problem at all, I turned on the laptop and since then everything works.
Thanks everyone! Best wishes

Oh yes..! Quite a strange explanation...

If everything is working now, that's great. Problem solved and thank you for this feedback.