B850 Pro A Wifi issue
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=113298
Printed Date: 01 Oct 2025 at 3:10pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: B850 Pro A Wifi issue
Posted By: cl3cl3
Subject: B850 Pro A Wifi issue
Date Posted: 15 Aug 2025 at 12:46am
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I'd like to post about my issue with my B850 Pro A Wifi motherboard
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Replies:
Posted By: TD1200X
Date Posted: 31 Aug 2025 at 4:26am
PC built two months ago and worked without any issues until the POST failure yesterday. The B850M PRO-A WIFI has both red and yellow LED lights (indicating CPU and DIMM issue) on steadily and does not POST. It originally had BIOS 3.30 when POST failed. It failed to POST after a reboot - the reboot was immediately after Hardware-Accelerated GPU Scheduling was enabled in Windows 11. Unable to POST ever since. Tried the following but no success.
* Used Flashback to upgrade BIOS to 3.40 successfully. (Green light was blinking during upgrade and eventually stopped blinking.)
* Inserted jumper to clear CMOS for 3 minutes. Tried 3 times.
* Removed 3V battery for 30 minutes, while jumper was inserted to clear CMOS.
* Re-seated two DIMMs in slots A2 and B2
* Tried using only one DIMM in slot B2
* Disconnected all HDMI/DisplayPort and USB.
* Re-seated discrete GPU
* Removed discrete GPU from PCIe slot and disconnected GPU power.
* Re-seated CPU (AMD 9800X3D)
I thought the BIOS 3.30 would have saved me. I guess the 3.40 BIOS doesn?™t help at this point if the CPU is already dead.
I?™ve opened a tech support ticket with ASrock and AMD.
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Posted By: TD1200X
Date Posted: 23 Sep 2025 at 1:27am
I got the AMD CPU replaced through RMA. Delivered to me on Sept 16. Overall the process wasn?™t bad.
ASRock RMA received my motherboard on Sept 10. I got an email stating it?™s being processed. Still waiting for next update.
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Posted By: TD1200X
Date Posted: 01 Oct 2025 at 11:14am
Got the replacement motherboard from ASRock RMA on Sept 30.
So, got both CPU and motherboard replaced at this point.
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