AMD Motherboards - B450M Pro4 - No Power On after prolonged shutdown

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B450M Pro4 - No Power On after prolonged shutdown

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=25427
Printed Date: 05 Nov 2025 at 3:24pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: B450M Pro4 - No Power On after prolonged shutdown

Posted By: davi
Subject: B450M Pro4 - No Power On after prolonged shutdown
Date Posted: 02 Feb 2023 at 11:33am

After shutting down my PC with an Asrock B450M Pro4 motherboard for the night, I will occasionally not be able to power up it up during my first attempts the morning. Sometimes I'll have to wait half an hour, and then suddenly the power button will work and I'll see my fans spinning and the case lights turning on.

Additionally, I thought it might have been a CMOS battery issue, because it'd boot with the wrong clock, but I swapped the KTS CR2032 for a brand new Energizer one and I'm still having the same annoying issue.

Replies:

Posted By: eccential
Date Posted: 02 Feb 2023 at 5:20pm

Power supply sus....