pre memory sb initialization

reddit.com › r/homelab › supermicro board stopped working (pre-memory sb initialization 19, 0x55 memory not installed?)

r/homelab on Reddit: SuperMicro board stopped working (Pre-memory SB Initialization 19, 0x55 Memory Not Installed?)

May 23, 2019 -

I purchased a used SuperMicro X11SSZ-TLN4F a few weeks ago from eBay and finally set everything up and it worked great for a week but yesterday the server locked up (but the BMC/IPMI still worked).

During boot it now shows:

Pre-memory SB initialization... 19

Usually it will freeze there, but so far (twice) it also displayed:

0x55 Memory No

(which I think is cut-off, and 0x55 appears to be Memory Not Installed).

It's odd that it worked for a week and suddenly stopped working. I've ordered new memory to see if that is the problem but it seems strange? Has this happened to anybody else before?

Top answer

1 of 2

To cover the ground you already have and looking at the board documentation, it would suggest that 'Pre-memory SB initialization...' (Pre-memory South Bridge initialisaion..) has a progress code of 0x19. So that seems OK. Then you have your '0x55 Memory No' which would match the PEI Error Code 0x55 - Memory not installed. So I think you are on the right track. If it were me, I'd pull everything pluggable (cards, storage etc..) all the memory and install a known good stick (and check its seated properly), or cycle through the sticks you do have (one at a time..) to see if you can get past the error, and then add things back in until it fails again (or not, happens sometimes..). It's odd that it worked for a week and suddenly stopped working. I've ordered new memory to see if that is the problem but it seems strange? Has this happened to anybody else before? Everything can fail, I've certainly had failed RAM in various boxes at various points, if anything it tends to be a nice failure (because its a swappable component that fails obviously, rather than something with data on, or something that creates odd hard to repeat issues, heat stress issues are a right bastard). It's also fairly common. Of course if you replace the RAM and you still have a problem then its likely there is an issue with the board itself and that it's an issue that you can't fix (at least if compressed air doesn't solve it). So, hope its the RAM, it almost certainly is, and yes, it can just happen.

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I had a SM board do something similar except it was something about the USB headers being fucked. I was basically dead in the water, SM support said GG the board is done for. Thankfully I kept looking into it and it turns out that SM IPMI can re-flash the bios (At least for my particular model) Do you have access to your IPMI page? If so i can walk you through how to hopefully bring it back to life.

ManualsLib

manualslib.com › brands › asus manuals › motherboard › p11c-m/4l

Q-Code Table - Asus P11C-M/4L Manual [Page 129] | ManualsLib

March 20, 2019 - Asus P11C-M/4L Manual Online: Q-Code Table. Action PHASE SEC Start up Security Phase PEI(Pre-EFI Initialization) phase MRC Progress phase Quick VGA DXE(Driver Execution Environment) phase ASUS P11C-M/4L POST CODE TYPE 0x1 Progress 0x2 Progress 0x3 Progress 0x4 Progress 0x5 Progress 0x6...

Ubuntu

bugs.launchpad.net › bugs › 1908294

Bug #1908294 “MCE on shutdown when nouveau driver loaded” : Bugs : linux package : Ubuntu

ManualsLib

manualslib.com › brands › asus manuals › server › rs720-e9-rs24-u › user manual

Asus RS720-E9-RS24-U User Manual (Page 23 of 186) | ManualsLib

View and Download Asus RS720-E9-RS24-U user manual online. 2U Rackmount Server. RS720-E9-RS24-U server pdf manual download. Action PHASE POST CODE TYPE 0x10 Progress PEI(Pre-EFI 0x11 Progress Initialization) phase 0x15 Progress 0x19 Progress 0x32 Progress 0x33 Progress 0x34 Progress...

ManualsLib

manualslib.com › brands › asus manuals › server › 90sf0071-m00040 › user manual

Q-Code/Port 80 Status Leds - Asus 90SF0071-M00040 User Manual [Page 28] | ManualsLib

November 23, 2023 - Pre-memory NB Initialization · Pre-memory SB Initialization · DXE Initial Program Load(IPL) DXE Core Started · DXE NVRAM Initialization · SB run-time Initialization · CPU DXE Initialization · PCI HB Initialization · NB DXE Initialization · NB DXE SMM Initialization ·

PrimeLine Solutions

primeline-solutions.com › datasheet › 51693 › asus-esc4000a-e10-gpu-server.pdf pdf

2U Rackmount Server ESC4000A-E10 User Guide

PEI(Pre-EFI · Initialization) phase · 0x10 · Progress · PEI Core Entry · 0x11 · Progress · PEI cache as ram CPU initial · 0x15 · Progress · NB Initialization before installed memory · 0x19 · Progress · SB Initialization before installed memory ·

reddit.com › r › homelab › comments › bs5c6r › supermicro_board_stopped_working_prememory_sb

SuperMicro 主機板掛了(Pre-memory SB Initialization 19, ...

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reddit.com › r/buildapc › oem pre-memory installation code

r/buildapc on Reddit: OEM pre-memory installation code

April 5, 2022 -

I am trying to boot my pc build for the first time and it keeps sitting at these codes in the 20s. I looked it up and as the title says the code corresponds to “OEM pre-memory installation” error. I have tried switching around my memory which is 4 x 32gb ddr5 and tried each of them individually. This ram has leds which all light up perfectly but I am still getting this error. I have an msi unify z690 board.

The fans and everything else seems to be working. I tired plugging the power cables back in again but still nothing changed.

Any thoughts as to what I could be doing wrong?

Top answer

1 of 1

Might be something wrong with your CPU, either it's not seated correctly, or there is damage to the socket or CPU

Techiplays

techiplays.com › pre-memory-cpu-initialization-is-started

Pre Memory CPU Initialization Is Started: Causes & Solutions

October 22, 2024 - Pre-memory CPU initialization is crucial for preparing your computer’s memory during startup. If issues arise, disabling overclocking may help....

MS.Codes

ms.codes › blogs › computer-hardware › pre-memory-cpu-initialization-is-started

Pre-memory CPU Initialization Is Started

February 14, 2024 - When it comes to the intricate world of computer systems, there is one crucial step that happens behind the scenes: pre-memory CPU initialization. This process, which occurs before the central processing unit (CPU) can access the system's memory, ...

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reddit.com › r/buildapc › pre-memory south-bridge initialization is started

r/buildapc on Reddit: Pre-memory South-Bridge initialization is started

November 28, 2021 - i just built a new pc and I cant boot it up. The debug LED says code 19: Pre-memory South-Bridge initialization is started. The rgb on my gpu and RAM sticks turn on but not the RGB on my motherboard. Does anyone know how I can fix this?

reddit.com › r/servers › server booting stuck at memory initialization stage

r/servers on Reddit: Server Booting Stuck at Memory Initialization Stage

November 10, 2017 -

So I have a Lenovo RD450 and I shut it down the previous night, I turned it on the next day, and it refuses to go past the memory initialization stage, how can this be resolved please?

Note: It is shut down everyday due to lack of constant power supply , and pressing the power button does not shut it off.

Someone suggested that I perform a cold reset to remove power from the RAM by unplugging the power cable and pressing the power button for fifteen seconds then plugging it back and starting the server.

PLEASE I NEED HELP , I DONT WANT TO GET FIRED !!!

Top answer

1 of 2

A. Reseat the dimms If it does not work. B. Isolate them by removing all dimms and only put in 1 memory dimm to see if it can get through. If it works, good. Then add more dimms and repeat the process. Hopefully it's not a faulty memory slot or memory dimm that cause this. If not. C. I always try to reseat the procs. I resolved most of my HP and dell servers this way. As I always encounter intermittent issues. (Careful of the pins bro)

2 of 2

Sounds like you might have a faulty stick of RAM. Does it show any diagnostic information? Or are there any lights? If not, try removing the sticks one by one to figure out which one is faulty - then you can replace it.

Overclock.net

overclock.net › home › forums › intel › intel - general

Z87X OC Code 15: Pre-memory North-Bridge initialization is started. | Overclock.net

Whenever I'm working on a memory OC and it goes unstable, 15 is one of the codes I see a lot. You said it boots if you completely reset the BIOS? If you leave everything on default and restart, will it fail to boot or will it work at that point? If this is the case, it sounds like there's a setting you're inadvertently changing or making too tight which is preventing the boot.

Tom's Hardware Forum

forums.tomshardware.com › home › motherboards

Error code "19" then reboot before post | Tom's Hardware Forum

August 24, 2012 - After that I have to do a hard restart for it to do anything, and then it's fine again. I looked in my motherboard manual and apparently this means "Pre-memory PCH initialization has started." The thing is, it doesn't happen every time, and it's completely random on when it decides to do this for some reason.

HatchJS

hatchjs.com › home › pre-memory cpu initialization started: what it is and why it matters

Pre-Memory CPU Initialization Started: What It Is and Why It Matters

December 26, 2023 - The pre-memory CPU initialization process is a critical part of the boot process of a computer. It is responsible for initializing the CPU and other essential components of the system before the operating system is loaded.

B&H Photo Video

bhphotovideo.com › lit_files › 642701.pdf pdf

1 Quick Start Quick Start

Presence Detect (SPD). Go to BIOS and find the DRAM Frequency to set the memory

reddit.com › r/amdhelp › expo delays boot up by 1min with "pre-memory system agent initialization is started" but works fine after boot

r/AMDHelp on Reddit: EXPO delays boot up by 1min with "Pre-memory System Agent initialization is started" but works fine after boot

October 4, 2023 -

New to AMD so not sure if this is a faulty Motherboard, RAM or just DDR5 experience since it's new

Without EXPO - My computer boots up normally and without delay

However, when I enable EXPO, and boot her up. The computer will go to code 15 ( book says - Pre-memory System Agent initialization is started). It will stay at this code for approx 1 minute before the computer boots up as normal.

Once booted to desktop, I check cpuz - and the RAM is running at EXPO frequency and timings without issue. No other issues with the computer once it's booted, have stressed tested multiple times.

Photo in comments (if allowed). When in code 15, RAM and CPU EZbug led light (Red CPU and yellow RAM), lights up during this phase before they turn off after the minute and computer boots up normal

BIOS is on latest version ( 2023-08-14 )Selected RAM is on the QVL list for the motherboard

Computer Type: Desktop

GPU: ASUS Strix RTX 4080 OC

CPU: AMD 7800x3d

Motherboard: MSI MPG X670E Carbon

BIOS Version: 7D70v18

RAM: G.Skill 64GB (2 slot) @ 6000Mhz - F5-6000J3040G32GX2-TZ5NR

PSU: MSI MEG Ai1300P 1300W

Case: NZXT H9 Flow

Operating System & Version: WINDOWS 10 PRO 19042

GPU Drivers: GEFORCE GAME READY DRIVER - WHQL Driver Version

Chipset Drivers: AMD X670E 5.01.29.2026

Background Applications: N/A

Top answer

1 of 2

I hope this helps you. https://reddit.com/r/MSI_Gaming/s/T4GX5c4CU5 https://youtu.be/vZukEdUAKfU?si=nmgsjQJkpERnenOo https://youtu.be/DXpzhpjkTjs?si=TgeXVA2b6gykXTBc I have an ASUS MB, and when applying AMD EXPO1, I enabled "Memory Context Restore" and "Power Down Enable" under DRAM Timing Control. When EXPO was simply applied, POST took about 40 seconds, but now it takes about 10 seconds.

2 of 2

Link to the EZbug lights on motherboard. https://app.gemoo.com/share/image-annotation/568063626894356480?codeId=v69pyX5YOX1zy&origin=imageurlgenerator

Oracle

docs.oracle.com › cd › E37035_01 › html › E37039 › gkzpz.html

POST Code Checkpoint Reference - Sun Blade X4-2B Service Manual

POST (power-on self-test) works with other processes to complete initialization of the host system prior to booting. During the host initialization process, if failures...

Softwareg.com.au

softwareg.com.au › en-us › blogs › computer-hardware › pre-memory-cpu-initialization-is-started

Pre-memory CPU Initialization Is Started – Softwareg.com.au

Pre-memory CPU initialization is a crucial step in the startup sequence of a computer. It involves initializing the central processing unit (CPU) before it can access the computer's memory and execute any commands.

G.SKILL TECH FORUM

gskill.us › forum › forum › general-discussion › general-discussion-aa › 11121-what-to-do-about-q-code-22-pre-memory-pch-initialization

What to do about Q-Code 22 - Pre-memory PCH initialization - G.SKILL TECH FORUM

April 1, 2013 - Hi, Have you ever try boot up with one DIMM only? If all memory modules shows the same result as "22", the issue should be other components, also run the Memtest to see if any errors occurred.