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X399 Fatality Pro Gaming Not Turning On
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Dylanrockin View Drop Down
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    Posted: 24 Feb 2018 at 11:53am
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.


Edited by Dylanrockin - 24 Feb 2018 at 12:43pm
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wardog View Drop Down
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First thing "I" would do is build it outside the case.
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Dylanrockin View Drop Down
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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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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.
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Dylanrockin View Drop Down
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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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wardog View Drop Down
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A short would cause exactly that, in the right(wrong!) place.
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Dylanrockin View Drop Down
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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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wardog View Drop Down
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Dylan, in reading on the net, try this for me.

Disconnect the NZXT fan controller and lighting module and retry.
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Originally posted by wardog wardog wrote:

Dylan, in reading on the net, try this for me.

Disconnect the NZXT fan controller and lighting module and retry.


After making sure the cpu gets cooled that is
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Will do, but is there any specific reason why the fan-controller and lighting controls may be the reason why?
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