X870E Taichi Lite CPU fan spins when off
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=113280
Printed Date: 15 Oct 2025 at 4:32am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X870E Taichi Lite CPU fan spins when off
Posted By: pp-tol
Subject: X870E Taichi Lite CPU fan spins when off
Date Posted: 04 Aug 2025 at 11:11pm
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hi, one more question on X870E Taichi Lite : Is it normal that the CPU fan does not stop when the computer is powered down (no sleep, realy shut down)? Fan rpm is realy low, not hearable, but still spinning. My fan is a Noctua NH-D15 G2 LBC. First I thought that would be a feature, to avoid hotspots when shuting down a hot CPU - but it keeps running for days... - the only way to stop is unplug. When re-pluged, fan is not running. All other fans stop on shut down. Or is there any switch in the BIOS to disable that behaviour? |
Replies:
Posted By: Xaltar
Date Posted: 05 Aug 2025 at 12:40am
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How is the fan connected to the system? ------------- 
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Posted By: pp-tol
Date Posted: 05 Aug 2025 at 1:57am
| its connected to CPU_Fan_1 of the Taichi Lite |
Posted By: Xaltar
Date Posted: 05 Aug 2025 at 2:37am
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Check in your BIOS under: Advanced>ACPI configuration> Deep Sleep and set it to enabled in S5 See if that sorts it out. -------------
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Posted By: pp-tol
Date Posted: 05 Aug 2025 at 7:28pm
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I am sorry, no effect at all. Fan is still spinning... |
Posted By: pp-tol
Date Posted: 05 Aug 2025 at 7:29pm
| BTW: Seting in BIOS was (and is now again) disabled (like default) |
Posted By: Xaltar
Date Posted: 05 Aug 2025 at 8:29pm
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Hmm, interesting. Maybe try connect your CPU fan to one of the other fan headers on the board and see if that changes anything. When you set Deep Sleep to enabled in S5, did it change anything? I mean other than the fan. -------------
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Posted By: pp-tol
Date Posted: 07 Aug 2025 at 12:25am
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I couldn't tell any difference when S5 was enabled: when I clicked ?œShut Down,??the PC shut down, the LED on the front of my case turned off, and all the fans (except one) stopped. When I pressed the Poewer button, the PC restarted as usual. I think I'll just put up with it, as I usually disconnect the PC and all its peripherals, such as printers, speakers, etc., from the power supply via a power strip with a switch, so the fan stops anyway. |
Posted By: pp-tol
Date Posted: 09 Aug 2025 at 11:38pm
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My curiosity wouldn't let me rest: When I shut down my PC running Linux (Ubuntu), the CPU fan also turns off! So it must be caused by a Windows program, right? I've now removed everything possible from Autostart, but unfortunately without success. The event viewer also shows no clues?”it remains a mystery. |