Z490 blue lights
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=16293
Printed Date: 02 Aug 2025 at 12:59pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z490 blue lights
Posted By: giosalinas
Subject: Z490 blue lights
Date Posted: 20 Sep 2020 at 4:40am
Hi,
I have a Z490 Phantom Gaming ITX/TB3 and after trying a new PSU cable I started having some troubles:
It stopped working, instead only a little blue light blinks under the motherboard (near PCI slot. I tried removing everything but didn't work, tried a new cable and nothing, then suddenly by trying between the same two cables it worked again, but when mounting same issue appeared (blue light). This started to get weird when I tried to remove the screw from the MoBo and case, blue light appeared when I screw it tighter to the case but when detaching the screw a bit it worked again! I can't see anything in the case shorting, this is the Motif Monument case, so its just a big piece of metal with nothing else in it.
Since I couldn't find a reason for the blue light I have to unmount the MoBo and instead of the blue light started to have 3 blinking led (2 blue light and 1 green/light blue) all in the same section (under the mobo near PCI slot). Anyone knows what's going on? what does it mean to have a little blue light blinking or 3 lights blinking?
Thanks!
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Replies:
Posted By: ASRock_TSD
Date Posted: 21 Sep 2020 at 6:03pm
Dear Giosalinas,
Thank you for posting the query to the ASRock forum.
Blue light under the PCIe slots would be the RGB lights.
RGB will light up automatically once power is provided to the motherboard.
RGB light can only indicate that the power is supplied to the motherboard.
With thanks,
ASRock TSD
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Posted By: giosalinas
Date Posted: 22 Sep 2020 at 1:00am
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does that mean that the motherboard is dead?? what I can do to fix that situation?
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Posted By: ASRock_TSD
Date Posted: 22 Sep 2020 at 3:00pm
Dear Giosalinas,
Thanks for the reply.
With the RGB light on, we are only able to know that power is supplied to the motherboard.
If the motherboard does not turn on, please refer to the following link to troubleshoot.
https://www.asrock.com/support/faq.asp
With thanks,
ASRock TSD
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