So I just ASSEMBLED a new computer for a friend when I plug everything in it wont turn on (NO fans, lights, beeps).  The motherboard comes with a POWER LED that lights up when the board detects power.  The light is working fine and is on but the computer wont turn on.

Now after conducting several TEST I'm positive its the motherboard (http://www.newegg.com/Product/Product.aspx?Item=N82E16813131366).  I'm looking for the community's advice on this issue before I request for a Manufacturer's Warranty.

The Following TROUBLESHOOTING steps were completed:

-Took Apart all physical components (CPU, VIDEOCARD, HDD, ETC) and reassembled.
-Swapped the PWR Switch cables with the Reset Cables to see if the Reset button would turn it on
-Removed all components except CPU
-Tried different working power switch cables
-Tested the PSU on a different system and worked fine
-Tested a different Working PSU and same results
-Removed all components including CPU
-Removed entire MOBO and placed on cardboard (I was thinking the case was grounding it somewhere) still no luck

I cant think of any other way to test it.  I would really like to try everything before I have to do a Warranty.

If you guys have any suggestions it would be appreciated




I also CHECKED all the JUMPER setting in the manualTry to boot the system off of minimal required hardware. If the motherboard has integrated video, remove the video card and attach directly to integrated. Remove all Ram except for a single stick in Bank 0, do not have any drives attached or powered. Just make the system at a minimal boot state for your motherboard to function as just the motherboard, power supply, and single stick of Ram.

Now if the system boots you know the problem is which another device influencing the boot sequence causing failure. If still no boot, try swapping Ram stick with another stick. ( Two sticks being Bad is extremely Rare ). If still no boot, make sure your power supply is rated the correct wattage to support your CPUs and Integrated GPU's needs and id swap power supplies if you have another one handy. If still not working your likely looking at a bad motherboard. Be sure all jumpers are set to default mfr specs as usually shown in booklet that came with motherboard.

I also have seen this happen where a CPU is mismatched with motherboard such as a lower end motherboard that only supports Pentium 4 and Dual-Core Socket 775 getting a Socket 775 Quad-Core in which the motherboard has no support for a Quad-Core ect. Hope this info helps you diagnose and come to a conclusion on your hardware issue.