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New built PC turns off after 3-4 minutes of use.

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  • CPUs
Last response: in CPUs
August 20, 2014 3:29:23 PM

I have just built a new computer (not my first time) and it powers up fine, enters bios, looks fine, but after about 3-4 minutes it just shuts off.

Specifications:
I7-3770k (not oced)
ECS z77h2-a2x v1.0 mobo (Tested and works)
EVGA GTX 780
Corsair CX-750 (Not modular)
WD Black 1TB
Corsair H100i

I've tried so far:
Re-applying thermal compound on CPU (Artic Mx4)
Making sure motherboard is grounded
Unplugging front panel power switch
Made sure all ATX and CPU power is plugged in

No luck so far, i need help.

More about : built turns minutes

a c 197 à CPUs
August 20, 2014 3:56:19 PM

what about ram ? and have u tried removing the gpu and booting the system ??? i strongly think its the psu ......
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August 20, 2014 6:12:03 PM

prit87 said:
what about ram ? and have u tried removing the gpu and booting the system ??? i strongly think its the psu ......


How can I test if it's the PSU with just the BIOS?

And also I tried booting the system with just 1 stick of ram.

Ram is 2x8gb of 1600Mhz corsair vengenance black,
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August 20, 2014 7:49:28 PM

It sounds to me like the H100i is not moving the water around the loop. What you're describing is classic processor overheat due to the heatsink not being properly attached or the heatsink not drawing away enough heat (fan not working). Try running the system with the Intel box fan that came with the CPU and see if you still have the issue.
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August 21, 2014 12:56:34 AM

I tried switching to the stock heatsink, still no luck.

Must be an issue with the PSU, ill try to get warranty on it or just move to a better brand (Silverstone or Coolermaster etc), i know Corsair's PSU are made by Seasonic which are still a very good brand.

So i get another CX-750 or go to another brand?
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a c 197 à CPUs
August 25, 2014 2:21:47 AM

yes you have selected a good one cx series are not at all a good quality psu........plus evga 750 gives u 10 years of warranty ....
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