https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 17 Apr 2026 16:00:29 +0000 Fri, 08 Aug 2025 17:23:51 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113284 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198673&title=b850m-proa-shutdown-issue#198673 Author: Xaltar
Subject: 113284
Posted: 08 Aug 2025 at 5:23pm

Happy to help, enjoy your system ]]> Fri, 08 Aug 2025 17:23:51 +0000 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198673&title=b850m-proa-shutdown-issue#198673 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198670&title=b850m-proa-shutdown-issue#198670 Author: brigitta
Subject: 113284
Posted: 08 Aug 2025 at 4:04am

Yes, it seems you are absolutely right! The 550 W bequiet! PSU solved the problem.
The 550 W version has not only the 8-pin CPU connector at the top edge of the board but also the additional 4-pin connector beside the 8-pin. Of course I have now connected both connectors.

Thank you for your advanced knowledge and your quick help!]]> Fri, 08 Aug 2025 04:04:42 +0000 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198670&title=b850m-proa-shutdown-issue#198670 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198667&title=b850m-proa-shutdown-issue#198667 Author: Xaltar
Subject: 113284
Posted: 07 Aug 2025 at 10:19pm

You only need to connect a single 4pin to CPU power on the board. A single 8pin
is preferable however. The second 8pin socket is typically only used by power
users for overclocking or when the board is fully populated with high power devices.

So no, not connecting the additional 4pin 12v is not the cause.

If BeQuiet wired your PSU in parallel then the load should be balanced. The problem
is that parallel 175w = 175w not 350w. This is why I don't like BeQuiet, their
marketing and specs are wildly misleading.

Try the 550w unit, I suspect that may resolve your issue. ]]> Thu, 07 Aug 2025 22:19:46 +0000 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198667&title=b850m-proa-shutdown-issue#198667 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198662&title=b850m-proa-shutdown-issue#198662 Author: brigitta
Subject: 113284
Posted: 07 Aug 2025 at 6:20pm

Thank you for your advice. It is not possible to swap the 12 V plugs, because bequiet! has assembled the both lines with multiple wires in parallel in separate plastic shields. I would have to separate these which is hardly possible.
I have used the 24-pin power plug and its 4-pin extension as well as the additional 8-pin plug for 12 V at the top side of the board. But I had no additional 12 V plug available from the PSU to connect to the additional 4-pin 12 V plug at the top side of the board.

Could this be the cause for the failure, that I have no additional 12 V supply at this 4-pin 12 V connector?

There is a warning in the board manual, to NOT connect a possible available 12 V VGA plug to the 12 V 4-pin-connector at the top side of the board. I have respected this warning. But would this VGA 12 V plug be the 12 V output of "the second rail" you have mentioned?

I have another PSU which can deliver 550 W (sorry but it is also manufactured by bequiet!) and I will try this. It has the additional 12 V plug, so that I can supply all 12 V connectors of my board.

I will report here again about the results.]]> Thu, 07 Aug 2025 18:20:52 +0000 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198662&title=b850m-proa-shutdown-issue#198662 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198659&title=b850m-proa-shutdown-issue#198659 Author: Xaltar
Subject: 113284
Posted: 07 Aug 2025 at 3:38pm

PSUs can degrade over time and should always be viewed as a possible issue. I have
often seen even new PSUs end up being the cause of issues. It's one of the first
components that needs to be ruled out during troubleshooting most problems.

If you have a means to, try the system with another PSU and see if it resolves the
issue. As a side note, I have never been a fan of BeQuiet PSUs, there have been
a disproportionately large number of them reported as defective here on the forums
over the years. It's not because they are a bad brand but because most of their
units are dual rail which require a little more know how when building. The power
draw needs to be balanced across both 12v rails or one of the rails ends up overloaded.
This is especially true for their sub 600w units. Your unit is no exception, it
has 2 12v rails that are only rated at 18A. Essentially, if all the load is on
a single 12v rail then you are effectively only using a ~175 watt PSU.

In fact, I suspect the PSU may not like being loaded in this way on more than one
level, it could well be the cause of your issue. Try identifying your 12v rails
and make sure you are distributing the load properly. Determine which rail provides
power to the 24pin power connector then use the other 12v rail to provide power
to the 8pin CPU power. You can simply swap the 8pin CPU power for the other rail
and see if that helps the situation. They should be labeled 12v1 and 12v2 on the
unit itself or in it's manual. ]]> Thu, 07 Aug 2025 15:38:39 +0000 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198659&title=b850m-proa-shutdown-issue#198659 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198656&title=b850m-proa-shutdown-issue#198656 Author: brigitta
Subject: 113284
Posted: 07 Aug 2025 at 4:39am

My ASrock B850M Pro-A with Ryzen 5 7600X suddenly started to reboot after shutting down by the OS. I am running Manjaro Linux, latest.

First I tried to power down the system by "sudo poweroff" or by "sudo shutdown -h now" instead of the GUI button. But it kept rebooting.

Then I watched precisely, at what stage the computer would turn on again and I found out, that the OS is already finished, the fans and the harddisk start to spin down and then the restart happens.

I have checked all BIOS items, which could wake up the computer like PCI or LAN etc. but I did not find any setting, which would cause the reboot.

Searching the web, I found the hint, that sometimes a PSU could be the cause. But my PSU is a 350 W bequiet! PSU which formerly was used in my older computer, having a total operating time of about 500 hours only. The PSU was never causing any problems.

How can I find out the reason for auto-rebooting after shut down?]]> Thu, 07 Aug 2025 04:39:17 +0000 https://forum.asrock.com/forum_posts.asp?TID=113284&PID=198656&title=b850m-proa-shutdown-issue#198656