Can't get Z390 Phantom Mini-ITX to work
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=27286
Printed Date: 26 Oct 2025 at 9:11pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Can't get Z390 Phantom Mini-ITX to work
Posted By: Cirruz
Subject: Can't get Z390 Phantom Mini-ITX to work
Date Posted: 06 Jan 2024 at 5:00pm
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Hello all! I have a Z390 Phantom mini ITX mb with a 8700k CPU. I am trying it on a bench and can't get the system to POST or display any video. Without RAM I can hear 3 beeps, so, something is working. As soon as I install RAM, no beeps, no video. The mb comes on, then off after a few seconds, then on, then off again after a few seconds, then on and stays like that indefinitely. No video, no beeps. The fans are spinning. I tried to use a single RAM stick on each of the slots, also tried to reset the CMOS, without luck. What should my next step be please? Thank you! |
Replies:
Posted By: Xaltar
Date Posted: 07 Jan 2024 at 6:35pm
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Try connecting a bootable flash drive to the system, one with an activity indicator LED. It could be that the system is POSTing but you are not getting a display for some reason. If the system accesses the flash drive then the odds are high that it is in fact POSTing and trying to boot. If that is the case, try different display cables and/or try a discrete GPU. Good luck  ------------- 
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