AMD Motherboards - B450M PRO4, no Boot with RAM in Slots B1/B2

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B450M PRO4, no Boot with RAM in Slots B1/B2

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=19678
Printed Date: 28 Apr 2024 at 9:34pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B450M PRO4, no Boot with RAM in Slots B1/B2

Posted By: fredly00
Subject: B450M PRO4, no Boot with RAM in Slots B1/B2
Date Posted: 09 Oct 2021 at 11:05am

So basically if I put any stick of ram in B1/B2 MOBO goes into a boot loop, fans on for 30seconds, then off and back on again.
I found I can put RAM in A1 A2 and it boots, or just A2.(boots just fine)

I know Spec says A2/B2 for 2 sticks but it won't boot.

I have a service request in with ASRock, but just curious maybe there is a BIOS setting I'm missing.

I've cleaned(blown out all the slots) removed and reinstalled CPU.(this also happened with AMD Athlon 200GE processor on loan from AMD for BIOS updates. Also tried different RAM to see if that was an issue(it still happened)

System:
B450M PRO4 BIOS 5.20(updated per customer service suggestion)
Ryzen 5 5600G
RAM: Corsair Vengeance LPX(2x8GB) (CMK16GX4M2B3200C16)
2 RAM (2x8gb) G.Skill RipJaws (F4-3200C16D-16GVKB)

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B450M Pro4