New Computer - Wont boot, wont post

[imported_simi]

So im trying to build this computer and for some reason the PC wont boot/post. I dont hear any beeps at all.

Config:
ECS G31T-M Motherboard
Q9300 CPU
4GB PC 6400 800mhz RAM
DVD-RW
500GB SATA HD

So i tryed building that last night, all the leds/fans go on but no boot or post. I unplug the DVD Drive, reduce the ram to 1 stick- stll doesnt boot. I replace the Power supply, still doesnt boot.

Today i go return the motherboard for a new one and get a Celeron 430 CPU. I try the new motherboard and still doesnt boot or post. I install the Celeron CPU and still nothing. I just unplugged everything and left it on basics and still no beeps. The only thing I can think of doing now is swapping the PSU but I doubt that will fix the problem. ANyone got any idea what the problem could be?

 

[wanderer27]

First off, welcome to the Forums!

It sounds like all your power connectors might not be plugged in.

There should be a square 4 pin connector plugged in by the CPU.

Also, make sure you have the 6 pin connector plugged into your Video card.

Double check that all your Power, Reset, HD LED, and Speaker (for MB) are hooked up right - these are all the bare pin post connections.

My guess is it's probably one of these causing your problem.