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Is my motherboard the problem?

Last response: in Motherboards
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June 21, 2012 1:31:30 AM

My computers fans turn on for half a second along with the front light, but then they turn off. This is a brand new computer, and I've never been able to POST.

I followed all the steps here to no success:
http://www.tomshardware.com/forum/261145-31-perform-ste...

I did the paper clip test to see if my psu was the problem, and the fan ran in it. I also tried another psu on the set up, and it did the same thing.

Specs:
--CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2133
--OCZ ModXStream Pro 600W
--GIGABYTE GA-H77-DS3H LGA 1155 Intel H77 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
--Intel Core i5-2310 Sandy Bridge 2.9GHz (3.2GHz Turbo Boost) LGA 1155 95W
--SAPPHIRE Radeon HD 7850 2GB 256-bit

More about : motherboard problem

a c 435 V Motherboard
June 21, 2012 1:42:02 AM

Do you have the correct connection to the video card from the power supply? I would also try the breadboard test out of the case using onboard video. For beep codes, connect the front case speaker if yours has one. Breadboarding is a generic term for testing the board on any non conductive surface such as wood or cardboard.
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June 21, 2012 1:46:13 AM

I used a wire with a tag that says PCI express on it for the video card.

Also, is there a guide for breadboarding anywhere? Also, i don't think i have a front case speaker.
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a b V Motherboard
June 21, 2012 2:03:52 AM

don't forget to check 12V connector, the problem looks like that so far.
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June 21, 2012 4:31:36 AM

what is the 12v connector specifically? Does it connect to the motherboard, the video card?
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June 21, 2012 4:54:17 AM

It's the 24-pin ATX power connector on the motherboard beside your RAM on the right edge of the motherboard. Also, make sure you have the 4-pin CPU power connector connected, it's beside your VGA and DVI ports in the top left corner of the motherboard.
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June 21, 2012 12:55:08 PM

My bad, I think BerylLee might have actually been referring to the 4-pin CPU power connector as the 12V connector since that connector is 12V only I think.
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June 21, 2012 2:14:36 PM

yes i had those plugged in then. If they were in the steps, i did/rechecked them.
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June 22, 2012 12:13:39 AM

If it is powering on then off, (not continuously) then you are probably not grounded properly, did u put the standoffs under the mb?
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a b V Motherboard
June 22, 2012 12:20:45 AM

I had the same problem til I reset my BIOS, that fixed it.
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a b V Motherboard
June 22, 2012 1:28:04 AM

It those basic checkpoints for hardware configuration don't fix the problem, you can unplug all power connection and reconnect them after hours .. just try to get into bios, check the bios version and give it the latest update, if it is some cold boot issue, it should be known with solution.
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June 22, 2012 1:40:04 AM

hannygirl said:
If it is powering on then off, (not continuously) then you are probably not grounded properly, did u put the standoffs under the mb?


Had all seven of the standoffs on.
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Anonymous
a b V Motherboard
June 22, 2012 1:48:16 AM

http://ee.gigabyte.com/products/page/mb/ga-h77-ds3hrev_...
1 x Clear CMOS jumper

if you cannot find it on the mobo when looking just unplug the power cord to the PSU. remove the battery for a few minutes, replace it and plug the cord back in to boot.
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June 22, 2012 2:47:56 AM

I tried pulling out the battery, and clearing cmos, and it still just turns on the fans for .5 seconds.
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June 25, 2012 3:01:21 AM

It's possible the motherboard was defective from the factory. Have you made any progress on this since your last post snowboard? Or has the situation changed at all?
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a b V Motherboard
June 25, 2012 4:36:48 AM

Sometimes its the psu. But you tried with another one already. Did you another pc before in your room? Just asking for curiosity.
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June 25, 2012 6:15:00 AM

i had another psu in my room from my friend, not a full pc.

Anyways, i decided to just send the motherboard back for replacement after the same thing happened with just the mobo, the psu, and the cpu/fan together. Hopefully it's not the cpu that is broken, but i didn't have anything to test with.
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a b V Motherboard
June 25, 2012 5:27:28 PM

I dont think its cpu. Sometimes it happen from bad power line. I had similar issue like you. I replace my psu and use good electric line. Problem solve.

But you already try with another psu. This is confusing.
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June 25, 2012 9:12:52 PM

i went to a pc store and had the guy test the psu just to make sure, and he said it was perfectly fine.
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a b V Motherboard
June 26, 2012 6:50:52 AM

Didnt you check your cpu and the whole system in that store?
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!