X399 Fatality Pro Gaming Not Turning 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=7803
Printed Date: 18 Jul 2025 at 11:18am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: X399 Fatality Pro Gaming Not Turning On
Posted By: Dylanrockin
Subject: X399 Fatality Pro Gaming Not Turning On
Date Posted: 24 Feb 2018 at 11:53am
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Components: Motherboard that is in the title 32GB Corsair RGB Ram 3200 mhz Threadripper 1950x Samsung 1tb 850 SSD AMD MSI 390x EVGA 850 Watt Supernova G3 Corsair H115i NZXT Phantom 820 Hello, I am having a terrible issue where my motherboard clearly has power, based on my RGB Ram flashing and changing lights when the power button on my PSU is turned on. However, the on-board power button, on the motherboard does not do anything. I can press that thing till the cows come home, but no matter what I do, the board will not turn on, when I want it to. This is how my build was, essentially: I have everything plugged, in, and I mean everything, including the 8-pin CPU Power as well as the optional 4-pin one in the upper left. When I unplug the 4 pin, my motherboard and entire system auto-starts and I cannot turn it off. But, when that 4-pin is plugged in, it will not work at all. Also, the LED post-display does not tell me anything. Nothing at all when it is plugged in. So I have 2 issues: one, the PC will not turn on, no matter what I do with everything plugged in. Or, I unplug the 1 4-pin, and the computer auto-starts, cannot be turned off and I get no display. Also, even though all my fans are plugged in, only 2 of them actually start up. The on-board power button doesn't work and neither does pressing the power button on the case, so clearly something is wrong. I think it might be DOA. If someone could tell me what to do or what it is that I'm doing wrong it would be greatly appreciated, because usually a dead board will not even power on at all, but mine at least attempted to, but displays nothing and the LED display doesn't turn up anything. Also, as an edit to my previous post: I have tested that motherboard with a different power supply that I know works, but didn't do anything at all either. Also, I found that with all CPU plugs installed, and flicking the power switch on, the system seems like it attempts to start, but when the 4-pin is gone, it will immediately jump start out of nowhere. Also, I used a different graphics card, a 5850, and tried seeing if it would output to my TV and turns out... nothing, at all.
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Replies:
Posted By: wardog
Date Posted: 24 Feb 2018 at 1:51pm
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First thing "I" would do is build it outside the case. |
Posted By: Dylanrockin
Date Posted: 24 Feb 2018 at 2:21pm
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" rel="nofollow - That's what I'm thinking, since the board automatically starts up, and when it has all CPU power plugged in, it seems like the board is shorting somewhere. The CPU cooler, h115i's pump starts to glow, but then turns off with the system. Can you confirm that this is a correct way to identify it as a short in the system? Before I take it out of course.
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Posted By: wardog
Date Posted: 24 Feb 2018 at 2:30pm
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" rel="nofollow - Correct way? From a distance? Bwhahahahaha Other than that, check that the cases wiring is correctly applied at the MB's sys panel headers. Have your bro or Wife help lift it from the case. I know. It's awkward. |
Posted By: Dylanrockin
Date Posted: 24 Feb 2018 at 2:35pm
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" rel="nofollow - You'd think that after me building several PC's that this one would be easy? Nope. I have a strong suspicion that the board is either DOA, or is shorting on something, but I have no idea why the 4-pin being removed would cause the PC to automatically boot up and not let me turn it off when the power switch on the PSU was flicked. I'm gonna take this to my colleague at the University and have him inspect it, since he is far more skilled than I am. Also, because I just don't have enough time in my week to do it myself as of late. I really hope it isn't dead, because that requires effort to actually RMA it and other nonsense.
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Posted By: wardog
Date Posted: 24 Feb 2018 at 2:38pm
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A short would cause exactly that, in the right(wrong!) place. |
Posted By: Dylanrockin
Date Posted: 24 Feb 2018 at 4:29pm
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Praying to God that is just a short and not something else, because clearly the RGB Ram has power since they're illuminated when the system turns "on" and only 2 of the fans in the case turns on. I think it might be a standoff, internal usb headers, or me doing my fan-wiring like a monkey. Also, the LED on the h115i that indicates whether it's on or not will turn on and then immediately off, in a split second, when the 4-pin is plugged in, which definitely is a result of a short. I just hope a short doesn't cause any permanent damage to the mobo and other parts.
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Posted By: wardog
Date Posted: 25 Feb 2018 at 12:23am
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Dylan, in reading on the net, try this for me. Disconnect the NZXT fan controller and lighting module and retry. |
Posted By: wardog
Date Posted: 25 Feb 2018 at 12:24am
After making sure the cpu gets cooled that is |
wardog wrote:Posted By: Dylanrockin
Date Posted: 25 Feb 2018 at 3:15am
| " rel="nofollow - Will do, but is there any specific reason why the fan-controller and lighting controls may be the reason why? |
Posted By: MisterJ
Date Posted: 25 Feb 2018 at 5:04am
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Dylanrockin, I am curious what power connectors you are using on the 8-pin and 4-pin CPU sockets. Use only the ones marker for the CPU and not the VGA. Make sure the 4-pin is not rotated 90 degrees because several here have done that. Use only VGA connectors on your video cards. Enjoy, John. ------------- Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD |
Posted By: Dylanrockin
Date Posted: 25 Feb 2018 at 6:55am
| I am using the CPU power cables, since they are labeled on the EVGA supernova. |
Posted By: MisterJ
Date Posted: 25 Feb 2018 at 6:57am
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" rel="nofollow - Thanks, Dylanrockin. Have you done a Clear CMOS or an F9+F10 in UEFI? Enjoy, John.
------------- Fat1 X399 Pro Gaming, TR 1950X, RAID0 3xSamsung SSD 960 EVO, G.SKILL FlareX F4-3200C14Q-32GFX, Win 10 x64 Pro, Enermx Platimax 850, Enermx Liqtech TR4 CPU Cooler, Radeon RX580, BIOS 2.00, 2xHDDs WD |
Posted By: Dylanrockin
Date Posted: 25 Feb 2018 at 6:59am
| It doesn't even turn on outright. If the 4-pin is removed, then it automatically turns, on, but I cannot turn it off and doesn't display anything. Only 2 of the fans plugged in will work, and the video card's fans will not spin. So, I'm suspecting a short on the motherboard. |
Posted By: JohnM
Date Posted: 25 Feb 2018 at 7:23am
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And they are definitely plugged into the correct sockets on the PSU? I know they are keyed to stop you getting it wrong but however unlikely, it may still be possible to get a square peg in a round hole! Forgive me if it seems like a stupid or patronising question but I'm trying to think laterally as you seem to be running out of options. ------------- ASRock Fatal1ty AB350 ITX P4.90, AMD Ryzen 5 2400G, 2x8GB Corsair CMK16GX4M2A2666C16, 250GB Samsung 960EVO, 500GB Samsung 850EVO, 4TB WD Blue, Windows 10 Pro 64, Corsair SF450, Cooler Master Elite 110 |
Posted By: Dylanrockin
Date Posted: 25 Feb 2018 at 9:14am
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Well, I did just test it outside of the case and it turns out it is definitely dead. The board, with the 4-pin and 8-pin would auto-start and the LCD display would not turn on, no beep code when RAM wasn't inserted. Nothing. Only 1 of the h115i's fans would turn on, when plugged directly onto the motherboard. I had no screws, and nothing else that would cause any sort of short around it, and the board would end up automatically turning on, but at the same time not work with me being unable to turn the damn thing off, unless I flicked the power. I think it was a DOA board or something went horribly, horribly wrong. I don't know what it was, but I did wear an anti-static wrist-wrap and used an anti-static mat when working on my build, so whatever it was, was an error in shipping or something. Welp, RMA time, I guess.
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