No power to motherboard from PSU, zero power

I have a GiGABYTE motherboard, an intel Pentium E500 LGA775 processor. I tried to new power supply and still cannot get a signal. I checked wires and cable on mb and push pwr button. But, still unable to get pwr to mb or computer. No fan, or no sign of power. Please assist..Help!!! Thank you, lgrj...~:confused:
 
mb standoffs

thank you for you help. I revisited the problem with a friend and co-worker. I failed to put the standoffs on mb installation. Now, it is corrected. full power, Windows 7 enterprise is installed and computer working as new.. Happy new year!! Best to all TechSpot participants... wish all continued success @ their endeavors....~:D
 
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