built a computer from scratch that starts for 1second and th

February 13, 2013 at 05:14:16
Specs: Windows 7, intel i3/4gbs
built a computer from scratch that starts for 1 second and then stops? Is it possible that the header pins/power on and such are connected wrong?

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February 13, 2013 at 06:05:07
We can't help you if you don't list the specs. I can make a couple of WAGs though:

1. you bought cheap generic underrated power supply
2. you installed the heatsink on the CPU incorrectly

I'm also guessing you didn't benchtest the hardware before installing everything in the case?

How to Bench Test / Troubleshoot Your System

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February 13, 2013 at 08:00:08
Check all connections, then strip as many things you can off the MB and try. Then start substituting components, starting with the PSU, then the ram, etc.

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February 13, 2013 at 09:17:25
I can add another possibility.

The is a short circuit between motherboard and chassis. Check the motherboard mountings are correctly installed. Bench testing outside of the chassis will eliminate the possibility of short circuit.

The PSU will switch itself of if it detects as short circuit.


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Related Solutions

February 13, 2013 at 10:36:02
Read the link riider posted in #1 above.

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February 13, 2013 at 22:16:46
Have had any luck yet? Maybe you need to completely Strip the system down and and put it back together one part at a time. Make sure nothing is being shorted out.
Make sure the motherboard is not touching the Back plate

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February 14, 2013 at 04:52:14
Just to elaborate on the shorting out a tiny bit:
A loose screw dropped while installing a component (hard drive?)
A chassis stud in the wrong place (Chassis stud = screw post that the motherboard is mounted to)
A missing chassis stud (allowing the motherboard to contact the chassis/case)
A CPU heat sink mounting bracket that is missing an insulating gasket (or the wrong bracket)

To be absolutely sure, go back to reply #1 and read the link about Bench Testing and start over!

You have to be a little bit crazy to keep you from going insane.

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February 18, 2013 at 21:41:37
Thanks for expanding Fingers :)

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