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Troubleshooting New Build - Powers on for 1/2 second


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#1
Falk3r

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[SOLVED]

Hey all, looking for some assistance here. I just built a new machine but I've got a problem at the moment of truth... when I attempt to power it on, everything lights up and all fans spin for 0.5 seconds, then it shuts itself down.

I've stripped it down to the barebones just to get a POST failure, and I can't even do that. Here's what I'm running:

Corsair 600T Case
Silverstone 1000W PSU
GIGABYTE GA-Z68XP-UD3P Motherboard
LGA1155 Intel i7-2600k CPU
Cooler Master 212 Heatsink+CPU Fan (Artic Silver 5 Applied)

And that is literally everything that is plugged in. When I hit the power button, all 3 case fans spin, the CPU fan spins, but it insta-shuts down.

Here's the rest of the equipment I took out during troubleshooting:

HDD
SSD
AMD HD 7970
2x Corsair Vengeance RAM
Blu-Ray Drive

Got any pro-tips? Might this be a short somewhere with the case?

[SOLUTION]
These new-fangled motherboards added another 8-pin connector needed from the PSU in addition to the customary 20/24-pin I'm used to. "I'm gettin' to old for this s---."

Edited by Falk3r, 17 January 2012 - 08:55 AM.

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#2
iammykyl

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Hi andPosted Image

Might this be a short somewhere with the case?


Would be my first thought.




Interrupted connection, continued next post.

Edited by iammykyl, 16 January 2012 - 11:40 PM.

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#3
iammykyl

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Sorry about that, a problem with the Internet.

If the Mobo is still installed in the case?

Unplug from the wall socket, take anti static measures.
Inspect the top of the board for dropped screws or wire.
Check the cooler fan wire, broken or bared and properly connected,
Disconnect the Monitor. I know you will not be able to see anything but the computer will still keep going.
Disconnect the case front header wires.
Connect to the wall socket.
with a small blades screwdriver, short out the 2 power on pins.

If still a failure, the most likely cause is under the Mobo. An extra stand-off, dropped screw, piece of wire. There must only be a stand-off screwed to the mounting plate to match the screw holes in the motherboard, NO extra ones.

Unplug from the wall socket, take anti static measures, remove the Mobo and inspect.
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#4
Falk3r

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Found the problem. I overlooked an additional 8-pin connector up near the CPU that this Mobo requires from PSU (in addition to the 24-pin). 'doh.

Thanks :)
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#5
Digerati

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Found the problem. I overlooked an additional 8-pin connector up near the CPU that this Mobo requires from PSU (in addition to the 24-pin). 'doh.

Thanks

I am glad you got it sorted out and thanks for posting the solution - that's how we all learn from each other. :thumbsup:
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