B850m suddenly dead
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=113397
Printed Date: 01 Dec 2025 at 2:35am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: B850m suddenly dead
Posted By: LyleDodd
Subject: B850m suddenly dead
Date Posted: 30 Nov 2025 at 11:53pm
|
Hello After 4 months of working fine my PC has suddenly died and not able to power on at all, no fan or PSU action , nothing. Just dead ASRock B850m AMD 9700x AIO Pump I had not updated the bios out the box, and I wonder if the issue is the know issue of ASRock killing AMD 5 9000 chips? But even if the CPU did die, would this cause no power to the mobo at all?? I have tested every other part but the CPU , and all other parts work. It's not PSU or case switch. Help |
Replies:
Posted By: Xaltar
Date Posted: 01 Dec 2025 at 12:29am
|
The CPU can trigger a power safety and prevent power on yes, if something inside the CPU has shorted out. If a power safety has triggered for another reason and not cleared it can also cause the system to not respond to the power switch. You can try the following to rule that out: 1. Disconnect the system from power 2. Disconnect the PSU from the board 3. Disconnect power from all devices attached to the board 4. Leave the system in this state for a few hours (I usually leave it over night) Then reassemble and see if the safety has cleared. If not then you can remove the CPU to check if it has any obvious damage. It looking fine isn't a guarantee that it's ok but it does rule out a more catastrophic failure. If the system does not power on once you reinstall the CPU then I would begin the RMA process for the CPU and possibly the board if it has taken any kind of damage to the socket. The known issue is exceedingly rare despite the media over focus. I have only seen a small number of cases reported here on the ASRock official forums which should be telling. The upside is, if you are one of the unfortunate few, the process of getting it sorted should be pretty straight forward and not cause you any headaches as AMD and ASRock are both taking the issue very seriously. Good luck and let us know how it goes. ------------- 
|
Posted By: LyleDodd
Date Posted: 01 Dec 2025 at 1:29am
|
Thanks Just to clarify before I start disassembling everything Let's say everything was plugged in correctly, however the CPU was not installed, should power still come on to the PC case. If no CPU present at all |