AMD Motherboards - PC Won't boot but MB LED flashing

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PC Won't boot but MB LED flashing

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=101351
Printed Date: 18 Mar 2025 at 4:04pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: PC Won't boot but MB LED flashing

Posted By: Harry0304
Subject: PC Won't boot but MB LED flashing
Date Posted: 18 Mar 2025 at 12:20am

Hello Everyone,

My PC spec is the Asrock B550M Steel Legend MB, AMD 5900x CPU, and 3080ti GPU.

My PC suddenly shut off while I was playing a game, and now it won?�t turn on. The fans do not spin when I push the PC power-on button. However, the on-board LED lights flash white when the PSU is turned on.

I have attempted the following troubleshooting steps:

Cleared the CMOS by removing the CR2032 battery
Used the back clear-CMOS button
Held the power button for 15 seconds

Unfortunately, none of these steps resolved the issue. Do you guys have any clue how to fix this issue?

Thank you for your assistance.

Replies:

Posted By: eccential
Date Posted: 18 Mar 2025 at 4:38am

Sounds to me like your power supply crapped out.