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I don't know if anyone can help me. I got the pieces for a new build today and now that its put together I find that the second after I click the power button, I get led power lights up, fans begin to start but almost immediately the computer just shuts down. I dont get any beeps.
My parts are:
Intel i7 2600k 3.4GHz, came overclocked to 4.6 GHz
Asus P8Z68-V PRO Intel Z68 (Socket 1155) DDR3 Motherboard
Kingston HyperX Grey 8GB (2x4GB) DDR3 PC3-12800C9 1600MHz Dual Channel
MSI GeForce GTX 570 1280MB GDDR5 PCI-Express Graphics Card
Cooler Master V6GT
60 GB Vortex SSD
I decided to try and use my old PSU, which is a Hyper 580w. I knew this would be touch and go, I ran several calculators and they came under this figure so I thought I would chance it. Besides, the motherboard has onboard graphics so I could try it without the 570 to be sure if it was a power problem. The items came in a barebones bundle but I found the Cooler Master heatsink didn't fit the motherboard exactly, even though it said it did online. Being impatient, I spent an hour filing the holes a couple mm wider, being sure to avoid circuitry and eventually got it to fit. When I attempted to start the machine I had the said problem above. I tried it without the graphics card and exactly the same. I tried with the ram in different combinations and the same. I tried one stick of ram and unplugged all unnecessary drives and fans, still the same. I tried removing the battery from the motherboard (presumably resetting bios and the overclock that was pre-setup???) but the same.
I'm thinking its one of two things - a faulty motherboard or the power supply is inadequate. Is there anyone here knowledgeable that could suggest an answer? What would happen if the PSU wasnt up to the job? Ive read on other similar posts that the computer auto shuts down if there is a heat problem, but surely this doesn't happen within the same second of turning it on.
I've ordered an Antec CP 850W PSU so I should be able to figure out if its that within a few days. But surely 580w PSU would be powerful enough to start a i7 2600k with no discrete graphics, even if it is 4 years old? I feel like a bit of a plonker filing the holes to fit the heat sink now because it will mean presumably I cannot return the motherboard if it is the cause of the problem. If it comes to it I'll have to replace the motherboard, sell the Coolermaster and buy a new heatsink - probably an A50.
Does anyone have any idea of what the issue might be or have any suggestions of things I should try?
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You can build it outside the case on a table or desk to verify it's not shorting out, but basically your deduction seems sound on what it could be. What's the label specs on the PSU? If it's the mobo, you may be screwed since you modified it.
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Sounds bad. I wouldn't get another PSU though since like you say it really should start without a gpu, at least if you didn't manage to break it while installing it.
What cpu-cooler did you use btw? Sounds risky to file holes.
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pretty sure its the PSU from what you're saying so far. I had this exact same problem two weeks ago, the fans would start up and the computer would shut down immediately. I sent the old PSU in for RMA, got the new one hooked up and problem solved
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I agree, you're reasoning is sound.
If you'd like to try and narrow down the problem more, this is a good website to estimate power supply adequacy: http://www.thermaltake.outervision.com/index.jsp. I used it to build my comp and I've had 0 issues with power. Plug in your specs and calculate it to see if it's estimates are above your power supply's wattage. I did an initial calculation (had to guess on some components cause you didn't list them) and you should be coming in at an adequate wattage for your power supply.
Personally, my gut tells me that your mobo is faulty, but you'll find out soon enough when you try the new power supply.
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The cooler is a Coolermaster V6GT.
I should add that at first I got the cooler to fit without filing holes wider, but it wasn't as tight as it should have been. Basically the mounting brackets have a raised edge that fit into the holes of the motherboard. Because they didn't align I couldn't get all four in at once. Rather I had to fit one at a time and screw the other side in with screws at an angle but the result was not perfectly tight. After the start up problem I made the holes a little wider and made sure the cooler was tight but still the same problem. Thats the only thing that makes me think maybe its not the motherboard - It wasn't working before any holes were made any way. Any I don't think it likely the holes filed have interfered with anything and if they had it would be surprising for it to cause the exact same problem.
Is it plausible that a 4 year old 580w PSU would not power up this sort of computer even without the GPU? Id of thought that even an overclocked i7 4.6GHz without a graphics card would need only 400w or so. Just realized the replacement PSU isn't ATX so ill have to change that.
This PSU I have is the Hiper Type M 580w and had been used on my Athlon x2 5600+ with Geforce 460 GTX
Efficiency 76%
Fan Type Sleeve Bearing Fan
Form Factor ATX 12V V2.2
EPS12V
Hold Up Time 16ms min
Input Current 6A (US: 10A)
Input Voltage 195 - 240V
Manufacturer Hiper
Output Capacity 580 Watts
Output Capacity (Max) 630 Watts
Power Factor Correction Active PFC
Power Good Signal 100 ~ 500ms
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An overclocked core i7 2600k uses much less than 400w, it's more like under 200w.
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Figured I ought to update this for closure in case anyone is reading this with a similar problem.
Turned out it was the motherboard. Except I do not believe it was the holes I filed, rather I installed the CPU cooler incorrectly with regards to the backplate and the board short circuited. Stupid mistake, and the fact I had drilled the holes means I probably can't return it. You live and learn.
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EPT
