If anyone is reading this in 2026 or later, if you see this, don't panic, and don't do anything. Just wait. Up to 30 minutes at least. Answer from yick04 on reddit.com
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Reddit
reddit.com › r/amdhelp › error code 15 and long boot time
r/AMDHelp on Reddit: Error Code 15 and Long Boot Time
May 17, 2024 -

Hello! Quickly before I describe the issue my specs are below:

Motherboard - Asus B650E-E wifi

CPU - Ryzen 7 7800 X3D

GPU - Asus Rog Strix 4080 Super OC 16g

Ram - G Skill Trident Z5 Neo 64gb DDR5

The issue I am experiencing is long boot times but before it boots, I am receiving error code 15 on my mother board’s error code indicator. I have tried reseating the ram, tested another set of ram from Corsair, updated my bios and cleared the CMOS. I am not sure why my computer is taking so long to post. If someone can help me with a solution would be much appreciated!

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Reddit
reddit.com › r/techsupport › q code 15 - faulty motherboard or cpu?
r/techsupport on Reddit: Q CODE 15 - Faulty Motherboard or CPU?
December 12, 2020 -

Hello,

I recently got my new components to upgrade my old system which was originally built in 2012 with Intel Ivy bridge.

New components: Asus Crosshair VIII Hero Dark, 5900X and T-Force XTREEM AERG 3600Mhz CL14 32GB.

After installing the components I am greeted by a Q CODE 15 and the Q LED shinning yellow / orange on the DRAM. I have tested the ram at a friends older Intel 8700k system and it was just fine. Booted right up and showed no signs of being bad.

I have since then tried basically everything from clearing CMOS to running outside the case, only 8-pin and 24-pin power plugged in. Running without the CPU cooler inside the case and outside the case, checked for overtightened screws, loose screws, potential shorting, tried both ram stick one at a time in all the slots. I have also updated the bios twice to 3003 bios.

One time I got a Q CODE 00 after I held the clear CMOS for over 10 seconds, but I assume it was frozen or something since it didn't react to the power button and I had to switch off the PSU entirely.

I can't think of anything else to check now. I would need a completely different system to check motherboard and CPU. I've spent more than 8 hours trying to figure this out...

I am out of ideas and quite frustrated. Do anyone of you have any suggestions to what I can do or have experienced this yourself and solved it?

Anything is appreciated! Thank you very much!

Very late update: Board was defective. After some years with the Dark Hero now, I can confirm this error was due to the board being incapable of training the ram. Would suspect poor traces or faulty SoC voltage supply with either too high/low voltage or a very very poor signal (data eye). Which in turn meant the UMC on the CCX was unable to train the memory.

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Reddit
reddit.com › r/amdhelp › been trying to fix this pc getting stuck on error code 15 for days (more information in replies)
r/AMDHelp on Reddit: Been trying to fix this PC getting stuck on error code 15 for days (more information in replies)
October 15, 2024 - Its memory training … mine needed 35 mins, then looped a bit boot … for 5 boots stopped at 15 … stayed there for 10-15 mins and jumped to bios … rebooted, got stuck again … intermittently other error codes requiring a stop … but then running perfectly fine. I have 4 ram … not really recommended I know … but get it going! ... Gave it a go, each individual memory module has the same boot code pattern happening. I'd find it crazy if 4 RAM modules randomly died, versus the motherboard itself bricking perhaps?
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Reddit
reddit.com › r/buildapc › msi mag x870 wifi stuck on bios error code 15: "pre-memory system agent initialization is started"
r/buildapc on Reddit: MSI MAG X870 WiFi stuck on BIOS error code 15: "Pre-memory System Agent initialization is started"
May 25, 2025 -

I am working on a new build with all new components. On power on, the system runs through a series of codes too fast to read, then restarts, runs throw some more codes, and halts on code 15. According to the manual it is "Pre-memory System Agent initialization is started"

It has been stuck with this error for several hours now.

Ideas\suggestions?

CPU: AMD 9950x
MOBO: MSI MAG x870 WiFi
RAM: 2x 32GB DDR5 Flare G-Skill
GPU: Not Installed yet (RTX 5070)
M.2 Samsung 990 pro 4TB
PSU: Reddragon 850

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Reddit
reddit.com › r/buildapc › debug code 15 on new build (msi)
r/buildapc on Reddit: Debug Code 15 on New Build (MSI)
November 8, 2022 -

Hello all, I just completed a new build with the following specs:

CPU: AMD 7950x

MOBO: MSI x670e MEG ACE

RAM: Corsair Dominator Platinum 64gb (4x16gb) 6000mhz

GPU: 3090 FE

PSU: Corsair AX1600i

Boot drive is a 1tb Kingston KC3000 m.2; there are several other m2 drives and SATA drives also present

Initial boot was lengthy as anticipated, about 1 minute. However, every time I boot (or try to wake from sleep) I get debug code 15, it hangs on this code for about 30 seconds, then reboots and then boots normally. Overall the PC is working fine, but I've been trying to find a solution to this with no luck. I updated to the most recent BIOS 7D69v125(Beta version) with no change. If anyone has any suggestions I would greatly appreciate it. Thanks in advance.

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Reddit
reddit.com › r/gigabyte › aorus x670e motherboard error 15 when using two out of four ram?
r/gigabyte on Reddit: AORUS X670E Motherboard Error 15 when using two out of four RAM?
January 29, 2024 - For a while, I've been trying to ... and the X670E Aorus motherboard. For about 5 months, everything worked as expected and I had all 64 GB RAM functioning perfectly. After that 5th month, the PC stopped booting and I was getting Error Code 15 on the motherboar...
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Tom's Hardware Forum
forums.tomshardware.com › home › systems
Error code 15 on mobo, what do? | Tom's Hardware Forum
February 6, 2015 - My current setup: i7 3770k gtx 970 8gb@1600 850psu ga-z77x-ud3h mobo Problem: ERROR CODE 15 - Pre-memory North-Bridge initialization is started. I'm trying to install 8 more of the exact same ram (corsair) but every time I put in my new ram I get the error code 15. My current used slots are...
Find elsewhere
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Reddit
reddit.com › r/techsupport › gigabyte ga-z77x-ud3h code error 15
r/techsupport on Reddit: Gigabyte GA-Z77X-UD3H code error 15
August 18, 2022 -

Hi guys

I've had this board since 2013 and it's been running perfectly fine since day 1. Yesterday, I set up a new monitor and everything was running fine.

Turned off the PC and went to bed. Woke up this morning and my PC will not boot into the BIOS. Keep getting error 15 on the mobo and I know it means "Pre-memory North-bridge initialzation is started" - well, I don't know what that means.

The CPU fan doesn't spin, although it initially looks like it's about to.

Looked on previous forums and some say it's a corrupted BIOS and needs to be reflashed (tried Alt+F10 and nothing worked).

Tried taking the RAM out and using different slot etc but nothing is working.

Any chance anyone could give me a hand?

My full specs are;

  • Intel Xeon E3-1230 v2 3.30GHz

  • Gigabyte GA-Z77X-UD3H

  • MSI GTX 980Ti Gaming 6G

  • 2 x Crucial 8GB DDR3 1333 MT/s (PC3-10600) CL9 @1.5V Ballistix Sport

  • Seagate 2TB 3.5" SATA

  • CM Storm Enforcer Case

  • MSI 323CQR (new monitor)

  • Dell UltraSharp U2713HM

If the mobo is dead, what would be an ideal replacement?

Thanks, I would hugely appreciate any support on this.

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Reddit
reddit.com › r/asrock › asrock x670e taichi won't boot, error code 15
r/ASRock on Reddit: ASRock X670E Taichi won't boot, error code 15
October 26, 2022 -

Troubleshooting Help:

**What is your parts list? **

ASRock X670E Taichi AM5 DDR5 AMD Ryzen™ 7000 X670E SATA 6Gb/s Extended ATX Motherboard

AMD Ryzen 9 7950X - 16-Core 4.5 GHz - Socket AM5 - 170W

ASRock OC Formula Radeon RX 6900 XT 16GB GDDR6 PCI Express 4.0

corsair 1000w power supply

CORSAIR Vengeance 32GB (2 x 16GB) 288-Pin PC RAM DDR5 5600

SAMSUNG 980 PRO M.2 2280 1TB PCI-Express Gen 4.0 x4, NVMe 1.3c Samsung V-NAND 3-bit MLC Internal Solid State Drive

Describe your problem. List any error messages and symptoms. Be descriptive.

When I first booted the computer windows was on the install screen and it said "your computer needs to be repaired" I did not get a chance to record the code.

After that it would not boot at all. I tried booting with the graphic card removed, but found out that doesn't work unless your processor has on board video built in.

I also tried booting with a bios usb, still nothing.

It gives error code 15, the manual calls this "dr. debug" under 15 it says: PEI_CAR_NB_INIT

also gives 5c but the manual says nothing about this

List anything you've done in attempt to diagnose or fix the problem.

I've tried re seating the GFX card and processor and hitting the reset switches. I have also replaced the motherboard, I just got the new one today, does the same thing. It also gives the same error code with the video card removed.

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Reddit
reddit.com › r/amdhelp › no post stuck in loop with code 15
r/AMDHelp on Reddit: No POST stuck in loop with code 15
May 6, 2023 - Its a memory issues so first, reseat your RAM and just for giggles reseat the CPU. if that fails, try booting with only one of each stick of RAM as one of those two sticks may be bad. if you have the option try a different kit of ram.
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Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Question - CODE 15 | Tom's Hardware Forum
February 1, 2025 - Problem: Installed all parts, went to boot. Code 15. Updated bios w/qflash. Returned mobo and ram for new. Installed same error. Move ram to slots 1/3 same error. Took ram out get code c5 I ordered the ram on gigabyte memory support. Same errors. I am on 2nd mobo and 3rd set of ram...
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Reddit
reddit.com › r/gigabyte › x870e aorus pro ice crashing on code 15
r/gigabyte on Reddit: X870E Aorus Pro Ice Crashing on Code 15
October 30, 2024 -

Im building a new PC with an X870E Aorus Pro Ice, Ryzen 9950X, 4080, and 64gb Corsair Dominator ram, but it keeps crashing on Code 15. Everytime I power it up, the DRAM Light comes on Red, it gets to code 15, and then it almost immediately shuts down.

I have had it actually post twice though, once it only made it to the BIOS then turned off, the second time it actually booted all the way into the Windows Install USB, then turned off. Both times though it made it past Code 15 and the DRAM light went off, and the Boot Light came on.

I know that Code 15 means its doing memory training and sometimes it takes a few minutes to move past it, but in this case that is not my problem, as it just shuts off.

Things I've tried so far:

  • Confirmed that the Memory is in the supported memory list for the motherboard

  • Tried with 1 Stick, Then the other stick, in all 4 slots

  • Tried using A1/A2, B1/B2, A1/B1 slots instead of A2/B2 like the manual says

  • Reseated the RAM Multiple times

Does anyone have any thoughts on what could cause this? Did I just get bad memory? Im not really sure what else to try at this point.

Edit: For anyone who finds this post later, the issue was not at all memory related. A loose pin on the CPU Cooler PWM plug was causing the AIO pump not to run and as a result the CPU was overheating and the system was shutting down. The pause at the memory init was just long enough to let it overheat and shutdown i guess.

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PCPartPicker
pcpartpicker.com › forums › topic › 420495-pc-will-not-post-anymore-error-code-15-90
PC will not POST anymore, error code 15, 90 - PCPartPicker
December 9, 2022 - AMD revised voltage limits down after launch reviews but never changed the official specs which are what motherboard manufacturers are supposed to use. But could be a simple corruption of both the BIOS ROM. Unlikely to lose both unless something unauthorized was writing to BIOS. You get two sets of errors from dual BIOS if one fails it will revert to the second which is also failing.
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Reddit
reddit.com › r › ASRock › comments › 167b56b › error_code_15
Reddit - The heart of the internet
September 1, 2023 - I've been on latest BIOS 1.28 since it came out and started getting code 15 on startup. Will not POST.
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Reddit
reddit.com › r/gigabyte › no post error 15 to ec
r/gigabyte on Reddit: No post error 15 to EC
November 4, 2024 -

Recently upgraded to 9950x with gigabyte x870 auros elite motherboard and 64gb Corsair 5600 ddr5 RAM but can't get post. I tried to flash bios through USB but didn't work. Reseated RAM but still shows the dram LED despite the slot or paired/single. It's a new PC, almost. GPU, SSD, case, and fans are from old rig. I don't have another pair of RAM to test motherboard. I'm going to reseat the CPU, CMOS, and check all cables are plug in all the way. I'm annoyed the possibility rma the motherboard or RAM. This sucks. Big change I'll have to replace RAM huh

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Reddit
reddit.com › r/gigabyte › help with x470 error 15
r/gigabyte on Reddit: Help with X470 error 15
December 25, 2021 -

As the title says my x470 is showing error code 15. I tried clearing cmos, removing the battery trying each ram individually. I looked around but couldnt find a clear answer or video on how to resolve. Its permanent black screen and will not allow me into the bios. Sorry if this has been answered and i missed it. Cpu ryzen 2700 1070 hybrid Corsair x4 2666 Gigabyte x470

Any help before i buy a new mobo would be great.

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Reddit
reddit.com › r/computerhelp › code 15 msi mpg x670e carbon wifi
Been trying to fix this PC getting stuck on error code 15 for ...
September 7, 2025 -

Hello everybody I need some help My pc specs are: CPU:Ryzen 5 7600X PSU: 850W Corsair GPU: Powercolor 9070xt Ram : Corsair Vengeance RBG DDR5 16GBx2 6000MHz

The issue that it is occurring is that i am getting a code 15 for a couple seconds and then my computer just turns off. I have updated the Bios to the most recent one. I have changed the Ram from a 6400MHz to a 6000MHz. I’ve cleared the CMOS using the button on the motherboard to no avail. And I have tested these parts on my Friends computer and it works just fine. I’ve always decided to only put one ram in the A2 slot and vice versa but still doesn’t work. What could the issue be. Please help!