C5 error in LED on boot
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=104684
Printed Date: 03 Apr 2025 at 10:26am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: C5 error in LED on boot
Posted By: sys_builder
Subject: C5 error in LED on boot
Date Posted: 31 Mar 2025 at 8:19pm
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Hi, I have Motherbard - PHANTOM GAMING X870E Nova WiFi(3.10 bios) CPU -9800X3D Ram: GSkill - F5-6000J3036G32GX2-TZ5NRW Case: Lian-li O11 dyanmic evo The system stops briefly at code 15 and stops completely at C5 afterwards. This is in combination with different memory slots. Without RAM, it errors AA. According to GSkill, this board is supported for this RAM. Front Panel controls also do not work. Thank you |
Replies:
Posted By: sys_builder
Date Posted: 31 Mar 2025 at 8:21pm
| I have reseated the cpu and graphics card. The pins look ok. |
Posted By: M440
Date Posted: 31 Mar 2025 at 9:59pm
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what does your mb manual says about this code? ------------- asrock b650m/hdv.m2, ryzen 7700x@85watt |
Posted By: NDRE28
Date Posted: 01 Apr 2025 at 11:24am
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Hi! Both C15 & C5 are related to memory issues. C15 = Memory training. C5 = Memory incompatibility. I have dealt with C5 too. I had a very niche memory kit, and it would give me error C5. What worked for me was putting both RAM DIMMs in channel B (B1 + B2), however that means that it will run in single-channel mode. You can try this setup to see if you can boot with it. In my case, I've ended up RMA'ing the RAM kit. I hope this helps... |
Posted By: Xaltar
Date Posted: 01 Apr 2025 at 6:01pm
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Thanks NDRE28, you are correct. The issue is most likely related to the RAM. Try reseating the RAM and ensuring it is fully seated in the slot. On new boards the slots can be very tight and seem like they are seated but actually still need to go in a bit further. Good luck ------------- 
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