https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 13 Apr 2026 06:39:44 +0000 Mon, 10 Nov 2025 18:07:36 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113375 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200350&title=b850m-pro-rs-wifi-ram-issue#200350 Author: Xaltar
Subject: 113375
Posted: 10 Nov 2025 at 6:07pm

As I said in my last post, bad CPUs happen, almost always when new. At the very
least I would return the CPU too, just to avoid still having an issue with a new
board. ]]> Mon, 10 Nov 2025 18:07:36 +0000 https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200350&title=b850m-pro-rs-wifi-ram-issue#200350 https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200346&title=b850m-pro-rs-wifi-ram-issue#200346 Author: Lux-V
Subject: 113375
Posted: 10 Nov 2025 at 10:31am

yeah, i have tried every combination, using both channels A1/A2, B1/B2, A1/B1 nothing has got my machine to go post. my CPU is brand new out of the box though... i have lost all hope so i will simply return this mobo and get an asorus.]]> Mon, 10 Nov 2025 10:31:10 +0000 https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200346&title=b850m-pro-rs-wifi-ram-issue#200346 https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200338&title=b850m-pro-rs-wifi-ram-issue#200338 Author: Xaltar
Subject: 113375
Posted: 08 Nov 2025 at 7:50am

Have you tried the RAM in slots A1 and A2 together? If both work in this configuration
then there is a high chance you have a defective CPU. Sadly this is a fairly common
issue these days with CPU memory controllers (IMCs) being marginal or just bad out
the box. Often times there may be some RAM that will work fine but others will exhibit
this issue. It is an indicator of a marginal/bad RAM channel on the IMC. The reason
the RAM slots are labeled A1/2 and B1/2 is to indicate the channels, A channel
and B channel. Each are connected to their own independent portion of the IMC
which gives you "dual channel", allowing the CPU to access each RAM module individually
simultaneously thus doubling RAM bandwidth.

If the both modules do NOT work in slots A1 and A2 then you may have incompatible
or marginal/bad RAM. Sadly I doubt this is the case if both work fine in slot
A2 individually.

Edited by Xaltar - 08 Nov 2025 at 7:51am]]> Sat, 08 Nov 2025 07:50:39 +0000 https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200338&title=b850m-pro-rs-wifi-ram-issue#200338 https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200336&title=b850m-pro-rs-wifi-ram-issue#200336 Author: Lux-V
Subject: 113375
Posted: 08 Nov 2025 at 6:23am

good evening.
i've having an issue with my asrock B850m pro rs wifi from the very beginning. i i haven't been able to make it boot dual module RAM and it only work with one in the A2 socket, when i add the 2nd RAM in B2 it wont boot at all and the RAM led stay yellow/red have tried everything from setting the RAM to 5200mhz, flashing BIOS to 3.50. i already tested both RAM and they both work fine just not together. my spec are:

CPU: R5 9600x
RAM: predator vesta 2 6400mhz kit
MOBO: asrock B850M pro RS wifi
GPU: asus AMD radeon 7600XT 16gb
]]> Sat, 08 Nov 2025 06:23:25 +0000 https://forum.asrock.com/forum_posts.asp?TID=113375&PID=200336&title=b850m-pro-rs-wifi-ram-issue#200336