XDA Developers
xda-developers.com › home › other hardware › the most commonly seen q-code errors on asus motherboards, and how to fix them
The most commonly seen Q-Code errors on Asus motherboards, and how to fix them
February 22, 2024 - A Q-code LED, in case you are wondering, essentially displays a two-digit code to denote the status of your PC. It's more of a status indicator than an error code LED, and you may notice it cycling through a bunch of rapidly changing codes before ...
Asus
asus.com › us › support › faq › 1043948
[Motherboard] Common Q-CODE(Error CODE) and Troubleshooting | Official Support | ASUS USA
Method a: Check for the Q-Code on the Motherboard, which is usually on the left upper edge or lower edge of the motherboard, as shown in the picture below: Method b. Enter into · ASUS Official website , open the Product Spec Page and check if your model support ASUS Q-CODE in Specifications
ASUS Q-LED and Q-Code Guide: Diagnose Boot and POST Issues
Learn how ASUS Q-LED and Q-Code debug indicators pinpoint CPU, DRAM, VGA, and BOOT faults, with quick checks to fix no POST and boot loops. More on rog-forum.asus.com
Can anyone point me towards a list of Q-codes?
Hi there! This is a friendly reminder to change your flair to Support - SOLVED! after your issue has been resolved. It is an immense help for those that may come across your same problem in the future so that they can quickly find the right solution. Thank you! I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns. More on reddit.com
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April 21, 2024Q-Led Code List? - Republic of Gamers Forum - 647703
I doubt having a comprehensive list of undocumented Q-Codes would be useful for motherboard troubleshooting. It might be useful (outside of ASUS) only for reverse-engineering, hacking, modifying, or duplicating the motherboard hardware/firmware. The Q-LED is only a display: undocumented Q-Codes ... More on rog-forum.asus.com
Asus Q-Codes - What do they mean?
Hi Guys, Recently I built a new computer with my girlfriend and the motherboard we went with was the Asus Maximus VII Ranger. The top right of the motherboard shows a Q-Code on an LED and we are constantly wondering what the codes mean. I've tried to Google and also searched both the Asus and... More on forums.tomshardware.com
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July 20, 2014Videos
How to disable the Q-Code LED on ASUS ROG motherboards 😏 #PC #Motherboard #HowToTech #PCTips #PCGaming #GamingPC #Tech | TikTok
ASUS Motherboard Troubleshooting via Q-LED Indicators ...
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[SOLVED] Asus Q-CODE Error Code C5 Memory Issue New Build x670e ...
06:03
ASUS Motherboard Troubleshooting via Q-LED indicators, Q-LED Core ...
Asus
asus.com › us › support › faq › 1047023
[Motherboard] FAQ of Q-LED Core | Official Support | ASUS USA
3 weeks ago - A-1. Fast blinking: The Power LED flashes quickly after power on, flashing 4 times per second (No DRAM detected)
PcHardwarePro
pchardwarepro.com › what do the q-led codes on asus motherboards mean?
Meaning of Q-LED codes on ASUS motherboards
January 4, 2026 - Each LED (CPU, DRAM, VGA, BOOT) ... boards, Q-LEDs are complemented by Q-CODE, a hexadecimal display that details the exact point of error according to the board's manual....
Newegg
newegg.com › p › pl
asus q led codes | Newegg.com
Search Newegg.com for asus q led codes. Get fast shipping and top-rated customer service.
Asus
rog-forum.asus.com › t5 › 4-heart-of-the-build › understanding-debug-codes › td-p › 1139925
ASUS Q-LED and Q-Code Guide: Diagnose Boot and POST Issues
February 27, 2026 - Learn how ASUS Q-LED and Q-Code debug indicators pinpoint CPU, DRAM, VGA, and BOOT faults, with quick checks to fix no POST and boot loops.
The Windows Club
thewindowsclub.com › the windows club › general › troubleshoot asus motherboard with q-led indicators
Troubleshoot ASUS motherboard with Q-LED indicators
December 15, 2023 - The LED indicators on motherboard indicate issues associated with different hardware. This article shows how to troubleshoot ASUS motherboard with Q-LED indicators.
Mundobytes
mundobytes.com › worldbytes › computer technology › hardware › diagnosing asus motherboards with q-led codes: a complete guide
Q-LED Diagnostics on ASUS Motherboards: A Complete Guide
December 28, 2025 - Learn how to interpret Q-LED, Q-LED Core, and Q-CODE on ASUS motherboards and troubleshoot CPU, RAM, VGA, and boot errors step by step.
Reddit
reddit.com › r/asus › can anyone point me towards a list of q-codes?
r/ASUS on Reddit: Can anyone point me towards a list of Q-codes?
April 21, 2024 -
I recently completed a new computer with a StrixX670E-E and, after a short time, it failed to boot and showed a memory error code.
I contacted support, sent it back, and they sent a replacement.
I reassembled my PC and, while it starts, it shows a series of Q-Codes (most appear around memory again) and I am hoping to try and figure out what is going on and, if possible, fix it before it breaks again.
However, I am unable to find a comprehensive list of codes and can only find people talking about them in various forums with generalized and surmised meanings. It would be really nice to have something more official (and which I could use to try and figure out how to diagnose the underlying issue and try and solve it).
Can anyone help me find one?
Top answer 1 of 4
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They can be found in the manual that came with your motherboard. Or you can download a copy of the manual in the support section of the Asus product page for your specific motherboard.
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 - You can either cover it up by attaching a piece of tape over it or you can turn the Q-Code display off in the BIOS settings. You can generally find the setting under “Advanced” and then “LED ...
Asus
rog-forum.asus.com › t5 › overclocking-tweaking › q-led-code-list › td-p › 647703
Q-Led Code List? - Republic of Gamers Forum - 647703
March 6, 2024 - undocumented hexadecimal Q-Codes ... But the Q-LED panel uses 14 LED segments which (as a group) would allow for 16384 discrete permutations....
Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Asus Q-Codes - What do they mean? | Tom's Hardware Forum
July 20, 2014 - Taken from the Asus Maximus VIII Hero manual (https://fast.ulmart.ru/manuals/3565565.pdf): "The Q-Code LED design provides you with a 2-digit error code that displays the system status.
ASUS
asus.com › support › faq › 1042678
[Motherboard] ASUS motherboard troubleshooting via Q-LED indicators | Official Support | ASUS Global
April 7, 2026 - D. BOOT LED light is always ON after power on(indicates no boot device or boot device faulty) Please follow the below steps to troubleshoot by Q-LED indicator:
Ultimate Systems Blog
blog.usro.net › ultimate systems blog › info › hardware info › asus motherboard error codes list explained
ASUS Motherboard Error Codes List Explained – Ultimate Systems Blog
May 26, 2025 - Tags: asus bios debug codes asus boot code a0 asus code 99 asus d6 error fix asus error codes guide asus gpu not detected asus led light error codes asus memory training loop asus motherboard debug codes asus no display fix asus post code explanation asus q code list asus q code not booting asus ram error code 55 debug led meaning asus how to fix asus q codes motherboard post code list q code 00 asus rog motherboard error code troubleshoot asus motherboard
Reddit
reddit.com › r › ASUS › comments › cj6d7o › disable_asus_rog_motherboard_qcode_led_solution
r/ASUS - Disable Asus ROG Motherboard Q-Code LED. (Solution)
February 18, 2021 - If it can't boot for any particular error it will remain on displaying the code. It's actually the way it should be by default. ... Hey, I don't want to sound like an ass, but it's also indicated how to do that in the manual that comes with the board. ;) ... Only if your board came out after that version of bios. A lot of us got boards prior to the change in the bios. :) ... Subreddit for ASUS product support, discussion and more.
Super User
superuser.com › questions › 1280971 › asus-q-led-how-to-use-it
motherboard - ASUS Q-LED, how to use it? - Super User
December 29, 2017 - When there's a problem with your PC, quickly being able to diagnose and remedy the issue can eliminate a great deal of frustration. ASUS Q-LED immediately indicates when there's a problem with the CPU, memory, graphics card or boot device by lighting up in the vicinity of that component.
Reddit
reddit.com › r/pcmasterrace › confused by q-led in asus rog maximus z790 hero
r/pcmasterrace on Reddit: Confused by Q-LED in Asus ROG MAXIMUS Z790 HERO
November 10, 2023 -
Hello, everyone.
I'm confused as to why the VGA error Q-LED (white) sometimes turns on even when the system apparently isn't showing any sign of failure. It is relatively rare to happen, but I'm worried as to wether it is a sign that the MOBO (model in title) or the GPU (Galax RTX 4090 SG) are already showing signs of unapparent failure. All the components are new (less than 6 months from assemblage) and I wonder if it's a good idea to activate warranty, as a precaution measure? Have anyone seen this issue before?
Would it be a case of simply re-seating the VGA? Normaly these Q-LEDs are indicator of what is causing the issue BEFORE the system boots... In my case, as I mentioned, everything runs (seemingly) fine.
Are there any softwares capable of running tests in order to find inconsistencies and errors that could be causing this?
The image is from the User's Manual and depicts exactly what I'm talking about, to clarify. Top answer 1 of 5
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Same setup as you. I just fixed it though. Go into the BIOS>Advanced\Onboard Devices Configuration: LED lighting When system is in working state: All On Q-Code LED Function: Auto When system is in sleep, hibernate or soft off states: All On If you have RGB memory and fans and they are off when you boot back into Windows, you can turn them back on in Armoury crate. That’s what I did to get it work afterBIOS upgrade.
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I just updated to the latest BIOS (1505) and I am having the same issue with the white LED staying on after booting into the OS. It’s bright as hell too!
Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
[SOLVED] - Q Code LED shows number 36 (Asus B550-E) | Tom's Hardware Forum
April 11, 2022 - MB: Asus Rog Strix B550-E Gaming / CPU: AMD Ryzen 5900X / Cooler: Noctua NH-D15S / PSU: Corsair RM850 (2021), RM Series, 850 Watt 80 Plus / RAM: Corsair Vengeance RGB PRO 16GB (2x8GB) DDR4 3200MHz / ASUS TUF GeForce RTX 3070 TI Everything runs OK, but I noticed the Q Code LED on the MB shows the number 36 in RED color.
YouTube
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ASUS Motherboard Troubleshooting via Q-LED indicators, Q ...
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Asus
rog-forum.asus.com › t5 › amd-600-series › mobo-cycling-through-q-codes › td-p › 914312
MOBO cycling through Q-codes - ROG Forum - ASUS
March 5, 2024 - I just want this code to tell me if everything is normal and change codes if there is something wrong... In BIOS go to Advanced>Onboard Devices Configuration then scroll down to LED Lighting>Q-Code LED Function, change to Post Code Only.