X570 Phantom Gaming 4S no case fans no boot
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=16937
Printed Date: 16 Aug 2025 at 2:06am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X570 Phantom Gaming 4S no case fans no boot
Posted By: OldSoftware
Subject: X570 Phantom Gaming 4S no case fans no boot
Date Posted: 13 Oct 2020 at 9:21am
I haven't built a new system in some time and need some help. I cannot get the HD lite, power lite, or diagnostic LEDs and the system will not boot. I have double checked all my connections. I tried with and without memory & disks. I tried with the built in HDMI (using an adapter) and with a old card I have on hand. Nothing.
The two case fans do not run but the CPU cooler fan, the onboard GPU fan and the PSU fan all run. I moved the connection for the case fans to other connections and no change.
I've shorted the BIOS several times between changes. Pulled all SATA data cables.
I'm out of ideas. Can anyone offer help?
My system details are:
Case: Cooler Master N400 NSE-400-KKN2 N-Series Mid Tower Computer Case with ATX Motherboard Support
Motherboard: ASRock X570 Phantom Gaming 4S AM4 AMD X570 SATA 6Gb/s ATX AMD Motherboard
AMD Chip: AMD RYZEN 5 3400G 4-Core 3.7 GHz (4.2 GHz Max Boost) Socket AM4 65W YD3400C5FHBOX Desktop Processor
Memory: G.SKILL Ripjaws V Series 32GB (2 x 16GB) 288-Pin DDR4 SDRAM DDR4 2400 (PC4 19200) Desktop Memory Model F4-2400C14D-32GVK
Power Supply: Cooler Master MPY-7501-AFAAG-US MWE 750 Gold Full Modular, 80+ Gold Certified 750W Power Supply
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Jim
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Replies:
Posted By: RLGL
Date Posted: 13 Oct 2020 at 9:43pm
Start with the power supply, power? Short pins with paperclip Fans run?
Remove from case, place on non conductive surface, cpu board and one memory stick.
All power cables connected there are two......what happens?
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Asrock Z370 Gaming K6,Intel i7 8700K,
Asrock x570 Taichi
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Posted By: OldSoftware
Date Posted: 15 Oct 2020 at 3:22pm
Your note made me verify that the power was properly connected.
When I ran the 2X8 cable to the MB connection, I routed it thru the back and it was a tight fit. I pulled on it a little to make the connection. The cable pulled out of the PSU just a little so it appeared that it was connected. Some things had power but others didn't.
After your note I double checked and the cable was just a little out. I firmly pushed it in and bing! everything worked.
My favorite comment to people I help, "Is it plugged in?"
Thanks
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Jim
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