Z390 Phantom Gaming 9, Power on then 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=12172
Printed Date: 04 Aug 2025 at 10:42pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z390 Phantom Gaming 9, Power on then off
Posted By: chknlil
Subject: Z390 Phantom Gaming 9, Power on then off
Date Posted: 12 Aug 2019 at 8:46am
All,
Purchased a Phantom 9 gaming. Installed i7-9700k.
Board will not post, will not stay powered on.
Powers up, powers down immediately. Never displays in LED display.
I've cleared CMOS, attempted a boot with no memory, with one memory stick in all slots, etc. etc. I'm wondering if the firmware on this board isn't up to the required BIOS level 4.10? How would I update with no CPU? Perhaps it's not that?
BTW, I tested the CPU, Memory, and PSU in another box, works no problem. Any thoughts on where to go from here? Just RMA?
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Replies:
Posted By: badbri
Date Posted: 17 Aug 2019 at 10:19am
Sounds like you need to update BIOS to at least v4.00 according to the CPU support list. You will need an older CPU (any of the i3-8000, i5-8000, i7-8000 series would work) to do it as there is no way to flash the board if the CPU is not recognized.
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https://www.passmark.com/baselines/V9/display.php?id=99573335296
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Posted By: chknlil
Date Posted: 17 Aug 2019 at 9:28pm
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I've been told by support that the board would at least boot to bios with either cpu version. Not sure if that's really true, but anyway I sent the board back to asrock directly, they've replaced it with a new serial number so I'm guessing that means it was indeed bad. I'm currently waiting on the return shipment, I'll let ya'll know results here.
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