B450 Gaming-ITX/ac Multi display issue
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=113491
Printed Date: 15 Apr 2026 at 9:14pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: B450 Gaming-ITX/ac Multi display issue
Posted By: medic2003
Subject: B450 Gaming-ITX/ac Multi display issue
Date Posted: 15 Apr 2026 at 4:43pm
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hello! I have a problem with ASRock Fatal1ty B450 Gaming-ITX/ac. If i connect two monitor to PC with this MB (DP-HDMI cable and HDMI - HDMI), them monitor on HDMI output picture blink off in random time. I have seven PC with this problem, I tryed another cables, another monitors, but my issue dont solved. if i connect one monitor all good. If I change MB to Asrock A520M-ITX/AC then all good. config all pc: CPU: Ryzen7 5700g MB: ASRock Fatal1ty B450 Gaming-ITX/ac MEMORY: DDR4 32GB/64 GB (one jor two module Kingstone,Patriot, Crucial) SSD NWME 512gb (Kingstone,Patriot, Crucial) BIOS 10.44 win 10/11 pro last updated AMD driver last updated Maybe you have any thoughts on this problem, I don?™t really want to change all the boards |
Replies:
Posted By: Xaltar
Date Posted: 15 Apr 2026 at 5:32pm
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If I am understanding your post correctly, you have multiple systems using this same motherboard, Fatal1ty B450 Gaming-ITX/ac, and all of them have the same issue with the HDMI output cutting out when used with another monitor connected to the DP output? If this is the case and you have already tried different cables, monitors and still have the issue then I would recommend you open a support ticket with ASRock: http://tw.asrock.com/events/tsd.asp" rel="nofollow - http://tw.asrock.com/events/tsd.asp It looks like you have already tried everything I would suggest. Sorry I can't be more helpful. ------------- 
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