X570 Phantom Gaming X won't turn on
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=19759
Printed Date: 08 Aug 2025 at 1:41am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X570 Phantom Gaming X won't turn on
Posted By: rappy501
Subject: X570 Phantom Gaming X won't turn on
Date Posted: 28 Oct 2021 at 3:21am
I installed new psu Corsair RMX 850w gold today. PC won't turn on whether I pressed the case power button nor the mobo power button. The psu fan does not start turning at all. All I see is the mobo power and reset button red LED lights flash briefly when I turn the PSU power button on and off, so power is still going from the PSU to the mobo. I already made sure that:
24pin is connected securely to motherboard
8pin cpu power is connected to top left of motherboard.
Ryzen 3700x and wraith prism cooler are slotted in securely.
2x8gb ram is slotted tightly to the 2nd and 4th slot from left.
chasis power
System Panel Header are all plugged in correctly in the bottom right of motherboard
I omitted GPU for the sake of PSU and motherboard diagnosis. I do not have any peripheral plugged in during this diagnosis. I don't know if the inability to boot up is my mobo or the brand new psu's problem.
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Replies:
Posted By: RLGL
Date Posted: 28 Oct 2021 at 11:19pm
Try clear CMOS.
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Asrock Z370 Gaming K6,Intel i7 8700K,
Asrock x570 Taichi
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Posted By: Animalm4st3r
Date Posted: 30 Oct 2021 at 6:35pm
What was the reason for getting the NEW PSU?
Did your old one break?
If not, try using ur old one again, if it works your new ones appears to be DOA.
If your old one broke it might have killed something else inside your PC.
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