Intel Motherboards - Z390 Pro4 with 4-pin power connector

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Z390 Pro4 with 4-pin power connector

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=14816
Printed Date: 06 Nov 2025 at 7:39pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Z390 Pro4 with 4-pin power connector

Posted By: Guipoggi
Subject: Z390 Pro4 with 4-pin power connector
Date Posted: 29 Jun 2020 at 6:14am

I have finishing assembling my PC (Z390 Pro4 with Intel i5 9600k) and, when I was turn it on, the lights go on but nothing else works... And the PC lights sometime go off and then on again... seeming like a lack of power.

I have installed a 500w PSU (more than enough for my setup) and it has two power connectors for the Motherboard: a 24 pin and a 4 pin. The manual says I can use a 4 pin connector... I have plugged both connectors and the problem persists. Please help.

Replies:

Posted By: ASRock_TSD
Date Posted: 29 Jun 2020 at 10:58am

Dear Guipoggi,

Thanks for posting your query to the ASRock forum.

Regarding your question,
1. Please remove the power connector and refer to the page.19 from the link below to clear the CMOS.
https://download.asrock.com/Manual/Z390%20Pro4.pdf
2. Please try to reinstall the RAM to different slots.
3. Please try reinstalling the CPU. (Check if the CPU pins are in correct shapes)
4. If possible, please try with a different RAM.

With thanks,
ASRock TSD