New built PC has power but no POST and no fan movement

DexyPC

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Sep 12, 2013
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I have just built a PC for a family member and I have check that all parts are compatible to a extent.
I have put it all together and double checked all connections yet when I go to power it on there is no an movement, the system does not POST and the only sign it has power is the SB_LED lights up green when I turn the power on but when I press the power button nothing happens.

Specs:
- i5 3570
- 8GB Kingston ddr3 ram 1600mhz
- P8 H77-m pro motherboard
- corsair cx500m PSU

There is no way to install windows seeing as nothing boots.

My current idea is that either there is not enough power in the PSU for the system, a fault PSU (which I doubt) or there is a compatibility issue.
I have check it was not the cable for the power supply so I know for sure that is not the problem.

Any ideas would be very helpful.

I have tested the PSU by bridging the 14-15 pins and the PSU powered up. So my new idea is that the motherboard is the problem. I have tried bridging the power pins when the PSU is powered but again nothing happened so I don't know where to go from here.
 

DexyPC

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Sep 12, 2013
14
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10,520


yes I have double checked every power cable.
I have manually bridged the two power switch pins and checked RAM and the PSU, and I don't know where to go from here.
 

Yoplait95

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Jan 8, 2013
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Try testing all of the parts in another setup / rig if you can. Also check to make sure there are no bent pins in the ram and cpu slots. Check for any odd looking dried liquids or powder on the motherboard as this could lead you to being able to RMA it with a DOA.
If you are unable to do that and you are going to replace any of the parts go with the motherboard first.