Help with ATX 24 pin Connection to Motherboard

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Nathan Ferguson

Honorable
Aug 10, 2013
2
0
10,510
Hi,

I am currently building a new computer and ran into this problem with my mobo/psu. I am working with a Corsair CX600M Power Supply, and a Gigabyte Z87X-UD4H motherboard. I have the 8 pin connector at the top plugged in, and the 24 pin ATX connector to it as well. However, the mobo is not being powered, and it seems to be a result of the 24 pin connector. If I put the right pressure on the wires, the light behind the power button will light up briefly if I hold it in the right spot, but still nothing will turn on. On occasion, I can get the 2 digit display on the mobo next to light up for a split second and the fan in the psu will start to turn, but then it stops. I am wondering whether or not this is a problem with my PSU or motherboard, or what I can do to help solve it. Thanks.
 
Solution
markwp
If you have already installed the m/b in your case, remove it and breadboard it on the box it came in. It's possible you have a short in the mounting. Use the switch leads from your case, one stick of ram, the cpu and one drive. Hook up the board as it rests on the cardboard box to the psu - 24pin, 8pin near cpu, on/off switch, reset switch and sata for drive. See if it will boot like that.

Be sure you have both the 24 and 8 pin connectors seated correctly and firmly.
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markwp

markwp

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Jan 22, 2013
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If you have already installed the m/b in your case, remove it and breadboard it on the box it came in. It's possible you have a short in the mounting. Use the switch leads from your case, one stick of ram, the cpu and one drive. Hook up the board as it rests on the cardboard box to the psu - 24pin, 8pin near cpu, on/off switch, reset switch and sata for drive. See if it will boot like that.

Be sure you have both the 24 and 8 pin connectors seated correctly and firmly.
 
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Solution
N

Nathan Ferguson

Honorable
Aug 10, 2013
2
0
10,510


Hi,

I did what you said, and that worked. Do you have any tips on how to install it properly into the case? For reference, it's an NXT Phantom 410.
 
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markwp

markwp

Dignified
Jan 22, 2013
3,183
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14,960
Just make sure you have all the brass standoffs correctly positioned in the case. Check your manual for the layout of the type of board (atx, mini, micro) you are using. Also be sure the i/o shield tabs are not hung up - sometimes they brush up against the underside of the board or one of the ports and cause issues.

Just take your time and do the first boot with the same items as the breadboard. Once you have it booting correctly, continue with the rest of the build.

Mark
 
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