Intel Motherboards - X399 Fatal1ty blinking power light while off

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X399 Fatal1ty blinking power light while off

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=10201
Printed Date: 07 Aug 2025 at 4:00am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: X399 Fatal1ty blinking power light while off

Posted By: Sydius
Subject: X399 Fatal1ty blinking power light while off
Date Posted: 18 Nov 2018 at 1:48am

The computer works just fine. I can boot to both Linux (main) and Windows (for games). When I shut down the computer, the power light blinks about once per second until I turn it back on again.

If I cut the power to the PSU, the light stops blinking and doesn't start again after restoring power until the computer has started at least once.

I never suspend/sleep and tried to disable suspend to RAM in the BIOS but it made no difference.

I have no USB devices plugged in that were not plugged in before this started happening.

This is a new problem. The power light is absurdly bright so it's really obvious and not something I could have ignored before.

I could unplug the light to stop the annoyance, but I'm worried that there's a hardware problem of some kind. What should I investigate?

Replies:

Posted By: Sydius
Date Posted: 18 Nov 2018 at 1:51am

Oh I did also try resetting the CMOS by hitting the reset button on the motherboard. It did reset everything, but did not fix this problem.