ASRock Forums : Z370 Extreme4 Flashing Blue Lights with No POST https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Fri, 10 Apr 2026 08:27:47 +0000 Sun, 22 Apr 2018 05:43:27 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=8323 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : Thank you. I discovered the answer...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=50222&title=z370-extreme4-flashing-blue-lights-with-no-post#50222 Author: biruja
Subject: 8323
Posted: 22 Apr 2018 at 5:43am

Thank you. I discovered the answer from another post:  

Turning on the PSU will not power up the mobo, it will sit in standby mode until the front panel power button is pushed. Did you connect a small pushbutton switch to the proper system panel header pins ? 
Check your manual, it should be on page 21 (if the online pdf and your manual are the same).
I use an old reset button ripped from an old case just for that purpose.

http://forum.asrock.com/forum_posts.asp?TID=8323&title=z370-extreme4-flashing-blue-lights-with-no-post  

This post nailed it. You must hook up the case power button to the motherboard. On the Extreme4, that means hooking up PLED+, PLED-, PWBRBTN#, and GND. As the previous poster said, this is described on p. 21 of the manual (my physical one.)
]]> Sun, 22 Apr 2018 05:43:27 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=50222&title=z370-extreme4-flashing-blue-lights-with-no-post#50222 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : I don&#039;t know if that was...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=50221&title=z370-extreme4-flashing-blue-lights-with-no-post#50221 Author: ameya_13
Subject: 8323
Posted: 22 Apr 2018 at 5:18am

I don't know if that was exactly what solved the problem but I realized that I had a missing screw holder in the cabinet and I had still tried to fix a screw there. I think that the screw was touching the motherboard and in a non insulated manner was also touching the chassis which was causing the problem. I would recommend checking if you have attached the motherboard to the chassis correctly and also that you don't have any loose screws touching parts they shouldn't. From what I understand, not POSTing with flashing blue lights might mean that there is a problem in the electrical circuitry. I could be wrong of course. I had to remove the motherboard from the chassis and with the dark rock pro 3 that was a pain and a half but you might try that if all else fails.]]> Sun, 22 Apr 2018 05:18:40 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=50221&title=z370-extreme4-flashing-blue-lights-with-no-post#50221 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : I have the same problem. Blue...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=50218&title=z370-extreme4-flashing-blue-lights-with-no-post#50218 Author: biruja
Subject: 8323
Posted: 22 Apr 2018 at 4:49am

I have the same problem. Blue lights flash when I plug in / turn on PSU. But the fan does not spin nor POST. What exactly did you do to fix this problem? ]]> Sun, 22 Apr 2018 04:49:08 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=50218&title=z370-extreme4-flashing-blue-lights-with-no-post#50218 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : In my case there is a difference...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49669&title=z370-extreme4-flashing-blue-lights-with-no-post#49669 Author: ameya_13
Subject: 8323
Posted: 12 Apr 2018 at 10:24pm

In my case there is a difference from the OP though. He mentioned he is getting this after hitting the power button, in my case, I am getting this as soon as I turn on the PSU or plug in the power cord to the mains.
]]> Thu, 12 Apr 2018 22:24:32 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49669&title=z370-extreme4-flashing-blue-lights-with-no-post#49669 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : Oh ok, this doesn&#039;t seem...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49668&title=z370-extreme4-flashing-blue-lights-with-no-post#49668 Author: ameya_13
Subject: 8323
Posted: 12 Apr 2018 at 10:21pm

Oh ok, this doesn't seem to be my problem though. I had the front panel powersw connected correctly including the pled + and - properly connected. Are there any other possibilities? I am considering to remove the motherboard from the case and trying it out while resting on a cardboard box or something. ]]> Thu, 12 Apr 2018 22:21:26 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49668&title=z370-extreme4-flashing-blue-lights-with-no-post#49668 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : I think he connected the case...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49590&title=z370-extreme4-flashing-blue-lights-with-no-post#49590 Author: badbri
Subject: 8323
Posted: 11 Apr 2018 at 9:36am

I think he connected the case front panel power button leads to the wrong pins. Very easy to do.
The red lines show where the power button should connect.
https://i.imgur.com/lyx5tha.jpg

]]> Wed, 11 Apr 2018 09:36:15 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49590&title=z370-extreme4-flashing-blue-lights-with-no-post#49590 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : Hi could you elaborate on what...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49585&title=z370-extreme4-flashing-blue-lights-with-no-post#49585 Author: ameya_13
Subject: 8323
Posted: 11 Apr 2018 at 6:24am

Hi could you elaborate on what problem you had? I am facing the exact same issue with the motherboard]]> Wed, 11 Apr 2018 06:24:18 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49585&title=z370-extreme4-flashing-blue-lights-with-no-post#49585 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : LOL glad you figured it out. Was...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49497&title=z370-extreme4-flashing-blue-lights-with-no-post#49497 Author: badbri
Subject: 8323
Posted: 09 Apr 2018 at 11:01am

LOL glad you figured it out. Was just about to ask if you had the front panel connected properly.
Nice build !


Edited by badbri - 09 Apr 2018 at 11:06am]]> Mon, 09 Apr 2018 11:01:46 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49497&title=z370-extreme4-flashing-blue-lights-with-no-post#49497 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : Never mind this. I figured out...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49496&title=z370-extreme4-flashing-blue-lights-with-no-post#49496 Author: The Astronomer
Subject: 8323
Posted: 09 Apr 2018 at 10:43am

Never mind this. I figured out the issue. I was using the wrong panel to power the machine. I re-read the manual and found the right one. I just derped this one.]]> Mon, 09 Apr 2018 10:43:57 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49496&title=z370-extreme4-flashing-blue-lights-with-no-post#49496 <![CDATA[Z370 Extreme4 Flashing Blue Lights with No POST : I have a Z370 Extreme4 and I assembled...]]> https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49494&title=z370-extreme4-flashing-blue-lights-with-no-post#49494 Author: The Astronomer
Subject: 8323
Posted: 09 Apr 2018 at 9:20am

I have a Z370 Extreme4 and I assembled the build, but when I turn the PSU on, it just flashes blue lights and won't do anything else when I hit the power button. No fans, no nothing. I have the 24 pin ATX and 8 pin CPU connected. I tried with and without RAM. With and without the CPU cooler connected. I have an M2 drive connected and a fan controller. I disconnected the SATA SSD and the BluRay drive with no change. I reseated the connections with no change.

Here is the parts list:
https://pcpartpicker.com/list/8Lyf8Y

Is my CPU DOA? I tested the PSU and it came back fine so I don't think it's that. Normally don't have issues but if my CPU is dead, that would be a first. Is there anything else I can check? Should I just return the CPU and get a replacement?


Edited by The Astronomer - 09 Apr 2018 at 9:20am]]> Mon, 09 Apr 2018 09:20:15 +0000 https://forum.asrock.com/forum_posts.asp?TID=8323&PID=49494&title=z370-extreme4-flashing-blue-lights-with-no-post#49494