https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 05 Apr 2026 05:30:32 +0000 Fri, 14 Aug 2020 14:30:47 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=15185 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=15185&PID=78021&title=z490-bios-update-mos-fan-problem#78021 Author: ASRock_TSD
Subject: 15185
Posted: 14 Aug 2020 at 2:30pm

Dear NadeMagnet,

Your email has been received, our team shall respond to you soon.

With thanks,
ASRock TSD]]> Fri, 14 Aug 2020 14:30:47 +0000 https://forum.asrock.com/forum_posts.asp?TID=15185&PID=78021&title=z490-bios-update-mos-fan-problem#78021 https://forum.asrock.com/forum_posts.asp?TID=15185&PID=78007&title=z490-bios-update-mos-fan-problem#78007 Author: NadeMagnet
Subject: 15185
Posted: 14 Aug 2020 at 12:49pm

I went ahead and filled out the form. But I think you're misunderstanding. The BIOS can still read all the case fans I have attached. What it's now not reading after the Bios update is the two small fans that COME with the motherboard itself. The Bios calls those two Mos_Fan1 and Mos_Fan2. Both now show N/A in the Bios instead of showing their RPM like it did before the update. ]]> Fri, 14 Aug 2020 12:49:37 +0000 https://forum.asrock.com/forum_posts.asp?TID=15185&PID=78007&title=z490-bios-update-mos-fan-problem#78007 https://forum.asrock.com/forum_posts.asp?TID=15185&PID=78001&title=z490-bios-update-mos-fan-problem#78001 Author: ASRock_TSD
Subject: 15185
Posted: 14 Aug 2020 at 11:55am

Dear NadeMagnet,

Thank you for posting your query to the ASRock forum.

Regarding your question, kindly fill out the form in the following link.
https://event.asrock.com/tsd.asp

Please provide the following information for us:
1. Motherboard model name.
2. Fan used. Is it 3 pins or 4 pins?
3. Please provide the header name that doesn't have the fan speed showing.

With thanks,
ASRock TSD]]> Fri, 14 Aug 2020 11:55:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=15185&PID=78001&title=z490-bios-update-mos-fan-problem#78001 https://forum.asrock.com/forum_posts.asp?TID=15185&PID=77999&title=z490-bios-update-mos-fan-problem#77999 Author: NadeMagnet
Subject: 15185
Posted: 14 Aug 2020 at 11:02am

I just updated the BIOS to P1.70 with the live update and app shop utility. Now in neither simple Bios, or in advanced H/W monitor does my Mos_Fan1 or 2 fan speed show up. It says N/A. I just took my side case off and the fans aren't spinning at all now. They should be set to performance with the rest of my fans. How do I re enable them? ]]> Fri, 14 Aug 2020 11:02:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=15185&PID=77999&title=z490-bios-update-mos-fan-problem#77999