First build will not power unless 'self test' button is used

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TheDroneGamers

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Nov 21, 2013
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Hi, I recently built my first computer and after having some booting problems I eventually got it to work. The only problem is that it will only power if I use the 'self test' button on my PSU and hold it for a few seconds. This means my motherboard and case power buttons will not power up my system and I can't screw the side of my case and the case fan that is included on that. Does anyone know why this would be? Have I set up my build wrong or connected any cables to the wrong ports? My motherboard has a clear CMOS and clear CMOS battery button and a dual-bios switch if this helps. Thanks in advance.

PC Specs:
Processor: Intel® Core™ i7-4770K
Motherboard: Gigabyte GA-Z87X-OC
Graphics Card: Gigabyte GV-N78TOC-3GD (GTX 780 Ti)
Memory: Corsair Vengeance® Pro - 16GB (2 x 8GB) 2400MHz C11 (CMY16GX3M2A2400C11R)
Hard Drive: Seagate ST4000DX001
Case: Cooler Master HAF X
Optical Drive: Asus BC-12D2HT
PSU: Corsair AX760i
Cooling: Corsair Hydro Series™ H100i + Artic Silver 5
PCI Cards: Asus ROG Xonar Phoebus Solo + Intel EXPI9301CTBLK
Operating System: Microsoft Windows 8.1
Monitors: Asus VG248QE G-SYNC
Keyboards: Razer Blackwidow Ultimate 2013
Mice & Mats: SteelSeries Sensei: MLG Edition + Roccat Alumic
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Solution
HiTechObsessed
It still sounds as if the wire into the PSU that tells it to turn on is loose, or not connecting properly. Might try popping it out of the connector itself and making sure the metal connector head on it is snug in there. The self test essentially just powers it on, which is why I'm leaning this way.

Edit: It will be the green cable coming out of the 24-pin connector.
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TheDroneGamers

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Nov 21, 2013
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It can't be that because I also have a power button built into my motherboard that won't even power it up?
 
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TheDroneGamers

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Nov 21, 2013
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I have checked and thay don't feel like they are going to come out and clicked in when i put them in, I have also rewired the PC twice because it would not power up through the normal button and I did not realise that the self test button might work. The cables are also not very tight so I don't think it is going to come out because of tight cables either.
 
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TheDroneGamers

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Nov 21, 2013
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HiTechObsessed

HiTechObsessed

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Dec 3, 2013
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It still sounds as if the wire into the PSU that tells it to turn on is loose, or not connecting properly. Might try popping it out of the connector itself and making sure the metal connector head on it is snug in there. The self test essentially just powers it on, which is why I'm leaning this way.

Edit: It will be the green cable coming out of the 24-pin connector.
 
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Solution
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TheDroneGamers

Honorable
Nov 21, 2013
76
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My 24-pin connector cables are all black so i can't check and I tried taking the 24-pin connector out and back in of the motherboard and it wasn't powering the board, then it would, then it would only power the components. I am assuming this is to do with the 24-pin connector? Or not? (If I need a new one it's fine, my PSU is modular :))

EDIT: It also didn't really fit in properly when it was powering stuff, but when I put it in properly so it snapped into place, it wouldn't power anything. It still powered the motherboard and components when I pressed the self test button though. And how can I test it without knowing which cable is the green one? Could it be the 24-pin socket on the motherboard? Thanks
 
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TheDroneGamers

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Nov 21, 2013
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The paperclip test passed, but I think it could be the other pins that are broke. If another cable does not work, i'll get a new motherboard from the company
 
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