https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 22 Apr 2026 09:38:43 +0000 Sun, 18 Oct 2020 14:16:03 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=16870 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=16870&PID=80718&title=x470d4u-shows-0v-on-cmos-battery#80718 Author: helixzz
Subject: 16870
Posted: 18 Oct 2020 at 2:16pm

Update: After few days (continuously running), the reported voltage came back to normal. I did nothing at all.
Strange issue.]]> Sun, 18 Oct 2020 14:16:03 +0000 https://forum.asrock.com/forum_posts.asp?TID=16870&PID=80718&title=x470d4u-shows-0v-on-cmos-battery#80718 https://forum.asrock.com/forum_posts.asp?TID=16870&PID=80480&title=x470d4u-shows-0v-on-cmos-battery#80480 Author: helixzz
Subject: 16870
Posted: 08 Oct 2020 at 9:39pm

I have a ASRock Rack X470D4U motherboard, with Ryzen 3600X processor, 8 GiB UDIMM.

Strangely, the BMC reports CMOS battery voltage is 0v, and issues an alert (of course).

Tried:
- Upgrade BIOS (3.30, L3.37)
- Upgrade BMC F/W (01.90.00, 02.05.00)
- Replace CMOS battery with new one

Well, none of them worked out.

P.S. I have a digital multimeter so I can confirm the actual battery voltage is normal (around 3V).]]> Thu, 08 Oct 2020 21:39:44 +0000 https://forum.asrock.com/forum_posts.asp?TID=16870&PID=80480&title=x470d4u-shows-0v-on-cmos-battery#80480