Fatality AB350 ITX - chassis 1 fan speed issues
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=10490
Printed Date: 31 Oct 2025 at 11:06am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Fatality AB350 ITX - chassis 1 fan speed issues
Posted By: dan0512
Subject: Fatality AB350 ITX - chassis 1 fan speed issues
Date Posted: 23 Dec 2018 at 10:31am
Hello,
Whenever I resume from sleep, the speed of chassis 1 fan becomes bugged.
Basically, it rotates around ~30% slower than what has been specified in BIOS. Before going into standby, everything is OK of course.
Can you please help with this issue?
Running 4.90 BIOS
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Replies:
Posted By: nanohead
Date Posted: 27 Dec 2018 at 1:07am
Same Board, same BIOS. Not experiencing that particular problem.
Sounds to me like its either some odd corruption to the fan setting in FANtastic tuning, or possibly, some other ACPI or power setting buried deep in the BIOS somewhere. Did you set the fan speed in BIOS or in Asrock's tuning software from windows? The fan speed setting doesn't stay set if you set the speed from the Windows software correctly. It only does it from BIOS.
Also, a silly wild a** guess, did you run the FanTuning feature before setting the actual fan speed in FANtastic tuning? I've had wierd behavior when not letting the board measure the fan speed via PWM before setting the fan speed in BIOS.
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Posted By: dspcmn
Date Posted: 03 Jan 2019 at 1:51am
I noticed the same behaviour, but don't recall which FW version.
I started using the other fan connector.
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