Just built my computer but it turns off almost immediately

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1

I turn it on and my case fans and gpu fans work but my cpu fan moves a bit then it just turns off and back on again.
This just repeats over and over. 

2

Can you post all of your components?

3

Gigabyte GA-H87-D3H Motherboard


Gainward GeForce GTX 750 2GB 


Intel Core i3 4150 


Kingston HyperX KHX1600C9D3B1K2/8GX 8GB (2x4GB) DDR3

Corsair VS550 ATX

Seagate Barracuda 1TB  

Cougar Volant Black Mid Tower 

4

Is your RAM installed properly?  I have seen it happen before where that problem is caused by something simpler like that.

5

Make sure all your connections are seated correctly. Sounds like the classic motherboard standoff shorting the board or the lack of installing them. If your board still had jumpers make sure all are in place and in the correct position. Refer to your mb manual.

6

Yeah, this is one of those times I would take the essentials out of the case and try them.

7

Agree. PSU is more than enough, components... Try this.

8

I had the same problem. The problem was that I did not plug  something in next to the CPU. I think it was the ATX power.

9

lol , i have done that.

10

Check the cables from the power supply, I've had problems with corsair connections before, 12 pin was connected but the 24 pin was slightly loose in the motherboard socket 

11
  • ram in incorrect slots or not pressed in enough
  • bad power connection somewhere
  • bent cpu socket pin - user error when installing - if so then you're up for a new motherboard
  • poor contact between cpu and heatsink
  • motherboard standoff shorting out the system
  • IO connections - power / reset / cables around the wrong way.
  • dud ram
  • dud motherboard
  • dud psu

Take motherboard out & do a barebone boot test on a table- no hdds, 1 stick of ram, keyboard, screen (running from just the onboard output) plus that psu or another that you know works.

12

ZOMG THE SUSPENSE! :P

did you fix it??? is it working? did all the suggestions help? 

TELL US!!!

13

i dont believe its the ram, caus as then the system would not shut down..

This sounds more like a short cirquit to me. or dead cpu / motherboard.

I would say take everything out of the case, lay the mobo on its box install 1 stick of ram reseat the cpu and cpu cooler, connect the monitor to the onboard video port on the mobo. (you can test on the igpu) connect the psu, 24pin aTX power and 8 pin cpu power and fire it up outside the case, due shorting the powerswitch pins on the front panel header, for a second.

14

I have had memory that looked seated correctly, but caused my computer to constantly reboot.  I had to turn off the power supply switch to stop the boot loop.

Switching around the sticks of RAM made it boot.