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Reddit
reddit.com › r/pcmasterrace › asus q-codes jumping between 30, 31, 32 after normal boot
r/pcmasterrace on Reddit: Asus Q-codes jumping between 30, 31, 32 after normal boot
March 30, 2023 -

Asus Strix z790-E, 13700K, 2x16 Trident Z 6800, 3060TI, Win 11, dual monitors

Just got this put together last week, everything appears normal, XMPI profile enabled and seems to be running at 6800.

But after boot to windows, everything normal and seems to be running as expected, the q-code keeps jumping back and forth from 30, 31, and 32. Does this right after boot, without going to sleep. Been watching it for 5+ minutes after normal boot, still doing it.

Is this normal? I thought once the computer was booted up, the q-code should should be stable at A0 or something.

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Asus
rog-forum.asus.com › t5 › amd-800-series › severe-instability-q-code-31-on-cold-boot-and-wake-from-sleep › td-p › 1141985
Severe instability (Q-Code 31) on cold boot and wake from sleep - ASUS X870E + Ryzen 7 9800X3D
March 25, 2026 - Strangely enough, today the system magically managed to cold boot with both sticks without throwing the Error 31. However, a new and fatal symptom appeared: upon restarting the system, the motherboard intermittently fails to initialize the USB ports (my keyboard is not detected at all), forcing a hard shutdown just to try and get into the BIOS. Given all these erratic symptoms (Q-Code 31 on cold boots that survived a careful CPU reseat, and now random USB initialization failures), it's completely clear that this specific motherboard has an intermittent physical hardware defect (perhaps a micro-fracture, a bad trace, or faulty soldering affecting both the memory channels and USB controllers).
Discussions

ASUS ROG Strix x870E-E q-code 31. G.SKILL 6000MHZ ... - Republic of Gamers Forum - 1089060
ROG Strix X870E-E Motherboard 2x16gb G.Skill 2x16gb DDR5 6000mhz CL26 kit. AMD 9950x3d CPU. I'm unable to get a successful post. Motherboard displays code 31 if I have the ram installed in all configurations except if I set one pin to the third slot from the cpu. Then it gives q... More on rog-forum.asus.com
🌐 rog-forum.asus.com
April 14, 2025
Q Code 31 and 98
Good morning everyone! I have an issue with a new build, I just upgraded my mobo and cpu to z790 Hero and 13900k, for some reason I keep getting either code 31-34 or 98, I've tried unplugging everything and plugging things one by one and I can't seem to figure out what devices it could be, any su... More on linustechtips.com
🌐 linustechtips.com
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October 14, 2023
Question - Post stuck at 31 when booting | Tom's Hardware Forum
Hi, sorry if this is in the wrong section. I have currently got an issue with my partners PC. She had a ryzen 3 cpu in a Rog crosshair hero vi and worked to some extent. So now I've just put my old ryzen 7 1800x in there but when I turn the PC it's stuck posting and won't move from code 31... More on forums.tomshardware.com
🌐 forums.tomshardware.com
July 22, 2023
Q-Code LED function 31,32,33 and 36 - Republic of Gamers Forum - 963157
I was getting these fluctuating numbers on my Q-Code LED and I was scratching my head thinking there was something wrong with the new rig I'm building but there wasn't at all. It turns out that in the UEFI under Advanced>Onboard Devices Configuration>LED Lighting the Q-Code LED function is ... More on rog-forum.asus.com
🌐 rog-forum.asus.com
October 11, 2023
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Asus
rog-forum.asus.com › t5 › zenith-extreme-x399-e › oled-display-in-motherboard-quot-code-31-check-cpu-quot › td-p › 744770
Oled Display in Motherboard: "Code 31 Check CPU" - Republic of Gamers Forum - 744770
March 6, 2024 - Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. ... Hi All, I had just put together an AMD Ryzen Threadripper system which consists of: 1. CPU: Ryzen Threadripper 1925x 2. Motherboard: Asus Zenith Extreme 3. RAM: 32 Gb Corsair Vengeance 3000 (16GB x 2) 4. Asus GTX 1080 I had tried to overcloak it by running the AI Suite 3. After that, my system was freezing up sometimes and then this error message: "Code 31 Check CPU" came on in the small Oled display on the motherboard.
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Asus
rog-forum.asus.com › t5 › amd-800-series › asus-rog-strix-x870e-e-q-code-31-g-skill-6000mhz-cl26-and › td-p › 1089060
ASUS ROG Strix x870E-E q-code 31. G.SKILL 6000MHZ ... - Republic of Gamers Forum - 1089060
April 14, 2025 - Motherboard displays code 31 if I have the ram installed in all configurations except if I set one pin to the third slot from the cpu. Then it gives q-code EC.
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WePC
wepc.com › home › tips & tricks
Motherboard error codes explained - For Gigabyte, ASUS, and MSI motherboards
February 5, 2024 - If your fault isn’t listed specifically in your motherboard manual, the trick to finding your fault is deciphering what bracket your fault fits into. For example, RAM faults usually fall between 19 and 31 on most motherboards, unless specified ...
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Linus Tech Tips
linustechtips.com › the workbench › troubleshooting
Q Code 31 and 98 - Troubleshooting - Linus Tech Tips
October 14, 2023 - I just built a PC with the same mobo and cpu as you, and I’m having the exact same problem and codes. It seems to be the ram. I’m using 4 sticks of 16gb Corsair Dominator 6200mhz. the PC won’t boot with all 4 sticks in. I get hung up on code 31. I dropped it down to 2 sticks on the 2 slots furthest from CPU and everything runs fine.
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Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Question - Post stuck at 31 when booting | Tom's Hardware Forum
July 22, 2023 - So as I have now upgraded my CPU I wanted to give my wife the 1800x Update: a friend has advise to try update the bios so I've popped the old CPU in (3200g) so I can get to the bios. It has successfully updated. It now gets past the 31 code and stops at code 55.
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Asus
rog-forum.asus.com › t5 › hardware-build-advice › q-code-led-function-31-32-33-and-36 › td-p › 963157
Q-Code LED function 31,32,33 and 36 - Republic of Gamers Forum - 963157
October 11, 2023 - It turns out that in the UEFI under Advanced>Onboard Devices Configuration>LED Lighting the Q-Code LED function is set to Auto which means not only does it show codes but it also shows cpu temperature. So I switched it to show POST code only and then it showed AO which made me extremely happy.
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MSI
forum-en.msi.com › home
Debug code 31-35 (MEG Z690 ACE)
December 3, 2022 - MSI Global English Forum
Find elsewhere
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Asus
asus.com › us › support › faq › 1043948
[Motherboard] Common Q-CODE(Error CODE) and Troubleshooting | Official Support | ASUS USA
Through the common Q-CODE, identify common installation problems and component problems of the motherboard.
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Reddit
reddit.com › r/pcmasterrace › q-codes on asus maximus z790 hero
r/pcmasterrace on Reddit: Q-Codes on ASUS Maximus Z790 Hero
March 2, 2023 -

Hey, all!

I just built a brand new PC and realized my mobo (model on title) is showing these cycling Q-Code 'errors', ranging from 30 to 36, apparently.

Consulting the manual, I learned the 30 code means the system is waking up from the S3 sleeping state (??), 31 means memory installed (and why that shows up now and then is a mystery to me), and the range 32-36 means CPU post-memory inicialization. Google told me it might be a badly seated CPU.

However, the thing is: I am indeed running a i9-13900K using a contact frame from Thermal Grizzly (which is tricky to properly mount), but the system is apparently functioning perfectly. So if the system boots normally and presents no falty behavior, why is the mobo showing these codes?

Any help or insight is appreciated! Thanks!

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Reddit
reddit.com › r/asusrog › asus z790 maximus hero q code 35-36-37-38-39-40-…
r/ASUSROG on Reddit: Asus z790 Maximus hero q code 35-36-37-38-39-40-…
December 5, 2022 -

I need help this is the first time that this happens to me I build a new Pc with a 13900k and when I boot the Pc everything works fine but que Q code is showing random number I goe up to the 80-81-82- 27 - 28 this is crazy I’m getting crazy

Update: it was the bios set to display the cpu temp the board it’s fine :)

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Reddit
reddit.com › r/asus › x870e apex – post code 31, cpu q-led stays on, no display – tried 2 cpus, flashback, multiple ram kits
r/ASUS on Reddit: X870E Apex – POST Code 31, CPU Q-LED stays on, no display – tried 2 CPUs, Flashback, multiple RAM kits
June 22, 2025 -

I'm trying to get my brand new ASUS ROG Crosshair X870E Apex to POST, and I’m stuck at POST code 31 with CPU Q-LED solid on. There’s no display output at any point.

My Setup:

  • Motherboard: ASUS ROG Crosshair X870E Apex

  • CPU: Ryzen 9 9950X3D (also tested 9800X3D)

  • RAM: Tried multiple DDR5 kits

  • GPU: 4090 Discrete GPU installed

  • PSU: Corsair AX1600i 1600W, known good

  • Cooling: Custom loop

What I’ve Tried:

  • Cleared CMOS multiple times

  • Updated BIOS via Flashback (successfully completed)

  • Tested two CPUs (9950X3D and 9800X3D)

  • Multiple RAM kits, both slots and one stick at a time, all known-good

  • Stripped system down to only CPU, one stick of RAM, PSU, and GPU

  • Checked socket pins carefully – looks clean

  • Tried Retry, Safe Boot, LN2 Mode, and Slow Mode – no change

  • BIOS Flashback LED blinks and completes as expected

  • Q-LED behavior: DRAM LED is on during memory training, then goes off; CPU LED comes on and stays on

  • POST code always gets to 31 and then stops

At this point, I’m thinking it’s a bad board, but hoping someone here might have a fix or see something I missed before I RMA.

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Asus
rog-forum.asus.com › t5 › other-motherboards › maximus-vi-impact-q-code-30-31-amp-32-no-bios-screen › td-p › 470041
Maximus VI Impact Q-Code 30, 31 & 32. No bios scre... - Republic of Gamers Forum - 470041
March 6, 2024 - Doing a new build and on first boot I ran into Q-code A2 and it wouldn't not even load to the BIOS screen. Read up on it and found out that its usually caused by outdated bios. So I updated the bios with the USB BIOS flashback method. Rebooted and now Q-codes 30, 31 and 32 show up. Still don't ...
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Supermicro
supermicro.com › support › faqs › faq.cfm
FAQ Entry | Online Support | Support - Super Micro Computer, Inc.
April 7, 2023 - Question We have a 2029BT-HTR that stops POSTing at code 31 in the lower righthand corner.
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CGDirector
cgdirector.com › home › troubleshoot & fix › troubleshooting asus motherboard error q-codes — everything you need to know
Troubleshooting ASUS Motherboard Error Q-Codes — Everything you need to know
August 15, 2022 - A code that means one thing on an ASUS motherboard might mean something completely different on a Gigabyte motherboard. The best way to find out all the Q-Codes for your motherboard is to look at the manual that came with it—or search up the manual online if you don’t have it.
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MMO-Champion
mmo-champion.com › forum › off-topic forums › computer
RAM Issue & Error Code 31 Issue
February 14, 2015 - Update: RAM Issue has been fixed. Now all that is left is to fix the code 31 Error. Hello Everyone, For the RAM issue I have it has been bothering me for quite a while now. What is happening with the RAM issue is my computer is using up a lot of ram when it is just sitting there idle for most ...
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Lifewire
lifewire.com › how-to-fix-code-31-errors-2623184
How to Fix Code 31 Errors in Windows
August 2, 2024 - Some people have had luck deleting the entire key that holds the UpperFilters and LowerFilters values. If deleting the specific values doesn't fix the Code 31 error, try backing up the registry key you identify in that tutorial above, and then delete the registry key, reboot, restore the registry key from the backup, and reboot again.