https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Thu, 30 Apr 2026 16:10:22 +0000 Tue, 01 Jul 2025 05:30:57 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=29599 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197980&title=c5-code-on-b650d4u#197980 Author: mmpn
Subject: 29599
Posted: 01 Jul 2025 at 5:30am

not permitted to, you have to get it from them directly.]]> Tue, 01 Jul 2025 05:30:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197980&title=c5-code-on-b650d4u#197980 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197979&title=c5-code-on-b650d4u#197979 Author: intuego
Subject: 29599
Posted: 01 Jul 2025 at 5:26am

Is there a change to post it here so i can grab it ?]]> Tue, 01 Jul 2025 05:26:43 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197979&title=c5-code-on-b650d4u#197979 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197978&title=c5-code-on-b650d4u#197978 Author: intuego
Subject: 29599
Posted: 01 Jul 2025 at 5:25am

thanks ! ]]> Tue, 01 Jul 2025 05:25:36 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197978&title=c5-code-on-b650d4u#197978 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197977&title=c5-code-on-b650d4u#197977 Author: mmpn
Subject: 29599
Posted: 01 Jul 2025 at 5:17am

reach out to support to get a beta version of the bios, that fixed it for us.

I'm surprised you are having the issue with a 4004/7000 cpu, I thought it was due to the new gen 4005/9000 cpu.]]> Tue, 01 Jul 2025 05:17:03 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197977&title=c5-code-on-b650d4u#197977 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197976&title=c5-code-on-b650d4u#197976 Author: intuego
Subject: 29599
Posted: 01 Jul 2025 at 5:12am

do u find any solution, ve the same issue. Resetting fix it
Dimms are new . also change with other dimms but same result
4564p 192gb 48gb dimm x 4
]]> Tue, 01 Jul 2025 05:12:20 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=197976&title=c5-code-on-b650d4u#197976 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=196463&title=c5-code-on-b650d4u#196463 Author: mmpn
Subject: 29599
Posted: 14 Jun 2025 at 9:50am

We have 5 new B650D4U boards 2 from vendor A, 3 from vendor B. Vendor B boards have this C5 issue after upgrading bios to 20.05 in order to support Epyc 4005/Ryzen 9000.
Swapping the memory from from a functioning A board to B boards, the issue appears inherent to the batch of B boards.


If anyone has resolution/other on this, it would be appreciated.]]> Sat, 14 Jun 2025 09:50:27 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=196463&title=c5-code-on-b650d4u#196463 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=195866&title=c5-code-on-b650d4u#195866 Author: mariusleu
Subject: 29599
Posted: 12 Jun 2025 at 3:58am

Dai wrote: codes, I see 15 followered by C5 where it stops.

Hi, I got the same issue. What was the cause and how did you fix it? Thanks.]]> Thu, 12 Jun 2025 03:58:13 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=195866&title=c5-code-on-b650d4u#195866 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=111589&title=c5-code-on-b650d4u#111589 Author: kerberos_20
Subject: 29599
Posted: 19 Feb 2024 at 5:08am

C5 should be memory related error, try shuffling single ram stick in different slots]]> Mon, 19 Feb 2024 05:08:17 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=111589&title=c5-code-on-b650d4u#111589 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=111574&title=c5-code-on-b650d4u#111574 Author: Dai
Subject: 29599
Posted: 18 Feb 2024 at 2:17am

I just picked up a B650D4U to build a server with. When I turn it on, it doesn't fully POST. Looking at the Dr. Debug codes, I see 15 followered by C5 where it stops. Never get VGA output though it'll take the display out of low power mode, nothing ever comes up just black screen.

The manual doesn't list C5, but says 15 is something like northbridge init.]]> Sun, 18 Feb 2024 02:17:42 +0000 https://forum.asrock.com/forum_posts.asp?TID=29599&PID=111574&title=c5-code-on-b650d4u#111574