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. Answer from Ferox63 on reddit.com
ASUS
asus.com › support › faq › 1043948
[Motherboard] Common Q-CODE(Error CODE) and Troubleshooting | Official Support | ASUS Global
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
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?
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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.
Asus Error Codes - Republic of Gamers Forum - 899579
Hello Everyone, I'm getting error code 42 with a green and white light while trying to boot up. I don't see it listed in the book or online. - 899579 More on rog-forum.asus.com
Q-Code list - Republic of Gamers Forum - 773919
Korth wrote: You might find "undocumented" Q-Codes in the manuals for other/older ASUS (Crosshair) motherboards. Or google, of course. But exactly which error code(s) are you getting? Okay, thanks. I actually managed to get it sorted. Turned out I needed to reinstall my CPU + waterblock. More on rog-forum.asus.com
Anyone know what these Asus Q-Codes mean? Several of them aren’t in the motherboard manual. My new build crashed after about 10 hours of using it and won’t boot now.
The 15 means CPU and Memory error. So personally I'd check the CPU pins and if the RAM is properly installed. CC - Invalid CMOS jumper setting code C8 - IDK 14 - Pre-memory CPU initialization is started 15 - Pre-memory System Agent initialization is started Sources: https://www.asus.com/support/FAQ/1043948/ http://www.asusqcodes.com/index.php?inputCode=15 More on reddit.com
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March 17, 2021lots of error codes on motherboard - ROG Forum - ASUS
Those are not error codes. They are the normal BIOS codes that indicate what stage of the boot, handover and state your motherboard is in. If you look in your user manual you will see each one listed and expanded. Could you tell me which PSU you are using, how old it is? More on rog-forum.asus.com
Videos
Hardware Centric
hardwarecentric.com › home › asus motherboard error codes list – a guide to asus motherboard error codes
Asus Motherboard Error Codes List - A Guide to Asus Motherboard Error Codes - Hardware Centric
August 11, 2024 - Asus motherboards provide POST error code diagnostics through 2-digit debug displays as the system boots up to rapidly indicate any component failures. We have provided all the error codes by ASUS motherboard, their meaning, likely root causes, and troubleshooting solutions to resolve problems, avoiding prolonged downtimes.
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 - E.g. 1 long beep and then 2 short beeps indicate a video card memory error on motherboards with American Megatrends (AMI) BIOS. Q-Codes are ASUS’s name for motherboard debug codes.
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 - One such feature that you'll find on the best Asus motherboards is a Q-code LED. It's usually found on some of the more premium motherboards, as opposed to the entry-level or budget options. 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 it settles on one as your PC finally boots.
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
OneSDR
onesdr.com › home › asus motherboard error codes list
ASUS Motherboard Error Codes List - OneSDR - 🛜 Technology
November 28, 2024 - This is a normal code indicating the system is ready to boot. 99: Super I/O initialization error. Disconnect unnecessary peripherals and test external devices. D6: No VGA detected. Check the GPU and monitor connections. D7: No keyboard or mouse detected. Ensure peripherals are properly connected.
Asus
rog-forum.asus.com › t5 › amd-600-series › asus-error-codes › td-p › 899579
Asus Error Codes - Republic of Gamers Forum - 899579
December 3, 2023 - Tyberious wrote: I found that error code 42 is due to unstable memory. This is correct. it's more frequently seen on XMP and D.O.C.P ram. Modules with the timings 40-40-40-77 ideally need changing to 40-40-40-80.
WePC
wepc.com › home › tips & tricks
Motherboard error codes explained - For Gigabyte, ASUS, and MSI motherboards
February 5, 2024 - There’s no website dedicated to finding Gigabyte fault codes, but we have put together a list of the most common Q-Codes on Gigabyte motherboards. The most common Gigabyte Q-Codes seem to be AB, 27, 70, D0, 03, and DB. Thankfully, a website ...
AllThings
allthings.how › all things how › windows › how to troubleshoot asus motherboard error codes
How to Troubleshoot ASUS Motherboard Error Codes
April 9, 2025 - ASUS motherboards use Q-CODEs—two-digit alphanumeric codes displayed on a small LED panel—to indicate hardware issues during the boot process.
The Tools Trunk
thetoolstrunk.com › home › asus motherboard error codes list | boot beeps decoded
Asus Motherboard Error Codes List | Boot Beeps Decoded
November 30, 2025 - Here is the quick shape of what you usually see during a failed Power-On Self Test (POST): a power light comes on, fans spin, then the board either plays a beep pattern, freezes on one Q-Code, or leaves a single Q-LED stuck on. Each one says, “stop here and check this device first.” The aim of this asus motherboard error codes list is to help you reach that first check with less trial and error.
Asus
rog-forum.asus.com › t5 › amd-500-400-series › q-code-list › td-p › 773919
Q-Code list - Republic of Gamers Forum - 773919
March 7, 2024 - That failing, I tried removing RAM sticks and putting each stick in every slot (one at a time,) I also tried the memory from my brother's ryzen rig and that also had the same codes. All the RAM worked fine in my brothers rig. Swapping the GPUs (a 1070, 1050ti and a rather old 6600GT) also made the system fail with GPU errors more often than the 08/0d. Thanks for the help. ... Hi stevecramertoo, Please check the manual. Chapter 1 Pages 1-15 to 1-19 ... Seems to work well... https://www.asusqcodes.com/
Reddit
reddit.com › r/pcmasterrace › anyone know what these asus q-codes mean? several of them aren’t in the motherboard manual. my new build crashed after about 10 hours of using it and won’t boot now.
r/pcmasterrace on Reddit: Anyone know what these Asus Q-Codes mean? Several of them aren’t in the motherboard manual. My new build crashed after about 10 hours of using it and won’t boot now.
March 17, 2021 - The 15 means CPU and Memory error. So personally I'd check the CPU pins and if the RAM is properly installed. CC - Invalid CMOS jumper setting code · C8 - IDK 14 - Pre-memory CPU initialization is started · 15 - Pre-memory System Agent ...
Ask For Files
ask4files.com › home › deciphering the enigma: a comprehensive guide to asus motherboard error codes
A Comprehensive Guide to ASUS Motherboard Error Codes - Ask For Files
November 4, 2024 - Decipher ASUS motherboard error codes & troubleshoot common issues. Learn to fix your PC with our comprehensive guide.
Asus
rog-forum.asus.com › t5 › z370-z390 › lots-of-error-codes-on-motherboard › td-p › 783566
lots of error codes on motherboard - ROG Forum - ASUS
March 7, 2024 - getting errors 14,88, 4c,34,3e,45,3f,39,3a,32,40,a2,61,64,7f,4f,78,92,97,99,a2,9c it all started, when I tried to play pubg. it crashed as I - 783566
ASUS
dlcdnet.asus.com › pub › ASUS › mb › socket1150 › Z97-WS › Manual&QVL › Z97-WS_Q-Code.pdf pdf
Q-Code Description Note 0000 Not used 0001
OEM post memory initialization codes · 004F · DXE IPL is started · 0050 · Memory initialization error. Invalid memory type or incompatible memory · speed · 0051 · Memory initialization error. SPD reading has failed · 0052 · Memory initialization error.
Asus
asus.com › us › support › faq › 1052538
[NUC] Error Codes During Boot for NUC | Official Support | ASUS USA
February 23, 2024 - This document defines the error messages and POST codes that could be seen when starting an NUC.
Asus
rog-forum.asus.com › t5 › other-motherboards › maximus-debug-led-codes › td-p › 142997
Maximus Debug LED Codes - ROG Forum - ASUS
March 6, 2024 - No usable memory detected 54 - Unspecifi ed memory initialization error 55 - Memory not installed 56 - Invalid CPU type or Speed 57 - CPU mismatch 58 - CPU self test failed or possible CPU cache error 59 - CPU micro-code is not found or micro-code ...
SoftwareKeep
softwarekeep.com › blogs › news › what-are-asus-beep-codes-and-how-to-identify-them
What Are ASUS Beep Codes and How To Identify Them | SoftwareKeep
December 3, 2024 - In the case of an error, you might hear an unusual beeping sound. This is called a beep code. Depending on the number of beeps and the length of the beeps, the code will translate to a different error. Because ASUS uses BIOS developed by AMI (American Megatrends Inc) the beep codes are based on the AMI BIOS.
Tech News Today
technewstoday.com › home › motherboards › what are all the asus beep codes? what do they mean
What Are All the Asus Beep Codes? What Do They Mean - Tech News Today
November 4, 2022 - If the system runs into an error where it cannot detect the CPU, the speaker on your motherboard will beep five short beeps. Bent pins on the motherboard/CPU, or a DOA CPU, could be why you are getting the error codes.