Perplexing power on issue help request
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=27515
Printed Date: 19 Jul 2025 at 10:36pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Perplexing power on issue help request
Posted By: potscrubber
Subject: Perplexing power on issue help request
Date Posted: 18 Jan 2024 at 12:01pm
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Greets - came here looking for some expert help. My 3 yr old DAW PC has started this intermittent fault with power on. Includes from cold boot or resume from sleep or hibernate. 33% of the time, when I power on (includes both case power button for cold boot or resume, and keyboard to resume from sleep) it fails to start. To get it to start I either have to hold down reset button and try again (just discovered this today), or, switch the PSU rocker switch off, wait 15 sec for the caps to drain (passive USB hub LED goes out). Then I can hit the PSU rocker switch on and start as per normal. Just started 6 months ago and pretty sure it's a pure H/W issue? Do we think it's mb or PSU? I think I'm trending mb but not sure how to confirm, or how to solve. System specs in sig. Any suggestions much appreciated! Cheers. ------------- ASRock Z490 Phantom Gaming 4 | i7-10700K | Crucial Ballistix 16 GB | AMD Radeon RX 6600 Challenger D 8GB | Corsair HX750 Platinum 80+ PSU | Windows 10 Pro 22H2 |
Replies:
Posted By: Xaltar
Date Posted: 18 Jan 2024 at 4:24pm
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What OS are you running and do you remember if you made any changes to the system around the time the issues began? Hardware, software, OS updates etc. Sleep/hibernate issues almost always come down to an OS or BIOS issue, often a combination of both, ie. an OS update breaks it but a BIOS update is required to fix it. I had similar issues with several of my own systems, in fact, it got so frustrating I stopped using sleep/hibernate at all. I would fix the issue only to have the next windows update break it all over again. This was in the early days of Ryzen however so it was really bad. These days it's usually just a stale/unmaintained OS. A simple way to rule out software/OS is to boot the system from a USB linux live distro and test the sleep/hibernate functionality. If it works, odds are, you need to update your OS, or reinstall if it's been in use a long time. If not you can post back here. ------------- 
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Posted By: potscrubber
Date Posted: 18 Jan 2024 at 5:37pm
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Hi thanks for your thoughts and input. Good point, it's Windows 10 Pro 22H2 (sig updated). While it's a somewhat minimal install (due to being a DAW) it's up to date with Windows, and nothing freaky tweak wise. Bios is last (non beta) 1.50. No significant changes to configuration. However. Due to the symptoms exhibiting even from a cold boot, and it's intermittent nature, I really don't see how it could be a software issue. Cheers ------------- ASRock Z490 Phantom Gaming 4 | i7-10700K | Crucial Ballistix 16 GB | AMD Radeon RX 6600 Challenger D 8GB | Corsair HX750 Platinum 80+ PSU | Windows 10 Pro 22H2 |
Posted By: Xaltar
Date Posted: 18 Jan 2024 at 8:22pm
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Just a shot in the dark but you could try replacing the CMOS battery. A weak/dying CMOS battery can cause all kinds of gremlins. If that doesn't help you can open a support ticket with ASRock and inquire with them, share a link to this thread too. https://tw.asrock.com/events/tsd.asp Good luck and let us know how it goes  -------------
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Posted By: potscrubber
Date Posted: 19 Jan 2024 at 7:22pm
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Thanks for suggestion. I have replaced CMOS battery. Old was reading a whisker over 3v, though plenty of my key FOB's stop working at that voltage. Have replaced with new 3.3v. Will report back, and contact support if I'm still stumped. Cheers! ------------- ASRock Z490 Phantom Gaming 4 | i7-10700K | Crucial Ballistix 16 GB | AMD Radeon RX 6600 Challenger D 8GB | Corsair HX750 Platinum 80+ PSU | Windows 10 Pro 22H2 |