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New build shuts down after a split second after start up

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July 22, 2012 6:32:15 AM

read a ton of threads but never came across anything definitive. i built a comp and went to start it up and it started up for a split second the shut down. I tried multiple tests. psu is confirmed good with the manual test and the on board speakers are not beeping at all have checked to make sure it was plugged in right multiple times.

i have it down to the mb psu and internal speaker using the power switch from the case. nothing



CPU: Intel Core i5-2500K 3.3GHz Quad-Core Processor
Motherboard: Gigabyte GA-Z77-D3H ATX LGA1155 Motherboard
Memory: Crucial Ballistix sport 8GB (2 x 4GB) DDR3-1600 Memory
Hard Drive: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Video Card: Sapphire Radeon HD 6870 1GB Video Card
Case: Rosewill CHALLENGER ATX Mid Tower Case
Power Supply: PC Power & Cooling 500W ATX12V Power Supply
Optical Drive: Sony AD-7280S-0B DVD/CD Writer
Other: Rosewill RCR-IC001 / 40-in-1 USB 2.0 3.5" Internal Card Reader
July 22, 2012 8:46:41 AM

do you get any beeps at all?
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July 22, 2012 4:55:48 PM

as noted in op no beeps
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a b B Homebuilt system
July 22, 2012 5:00:19 PM

Since it is a new build, check the back of the motherboard to make sure you used standoffs which clears the mobo from the metal back of the case. That obviousness aside, start by pulling one component at a time until the problem goes away. Start with the GPU (use onboard), then hard drives, then optical drives, then any other add on cards, then finally any other extras (card reader), and see which component (if any) that is causing this.
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a b B Homebuilt system
July 22, 2012 5:02:20 PM

Why such a low power choice on the PSU?
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a b B Homebuilt system
July 22, 2012 5:02:56 PM

I would want more juice with that setup.
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July 22, 2012 5:18:55 PM

SR-71 Blackbird said:
I would want more juice with that setup.


because it is sufficient and thank you for your opinion, but please relevant posts.
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a b B Homebuilt system
July 22, 2012 5:29:01 PM

It's a relevant post because in my opinion,i think you need a tad more power.I didn't mean to offend you.Sorry.
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July 22, 2012 5:53:44 PM

SR-71 Blackbird said:
It's a relevant post because in my opinion,i think you need a tad more power.I didn't mean to offend you.Sorry.


Its a seasonic 500w unit, and PC&C is a very nice company. His system probably only uses 300w at max load.

I am using a 6870 on my 500w Antec EA 500D.

As someone else stated, take away components one at a time and see where that gets you.
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a b B Homebuilt system
July 22, 2012 7:27:54 PM

500 W is sufficient for your build. At full CPU and GPU load without OC, I suspect at the wall you will be pulling about half your PSU's max at 250W, which is the sweet spot for efficiency and PSU longevity.
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July 23, 2012 3:26:08 PM

figured it out i forgot to plug the 4 prong atx 12v! simple mistake for a first time build she runs beatifully can't wait to install win7 and take her for a spin!
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