Welcome to the forum.
1) Make sure that you have the front panel Power and Reset wires connected to the correct mobo connectors.
2) Disconnect the front panel Power wires and carefully use a screwdriver tip or jumper block to momentarily jumper the Power mobo pins.
Did you first test your system with your motherboard outside of and beside the case, with the motherboard placed on a cardboard box?
We can best help you after you create a detailed hardware list in the System Specs portion of your
forum profile http://forums.tweaktown.com/profile.php?do=editprofile at the bottom of the
profile page or in your forum signature http://forums.tweaktown.com/profile....=editsignature.
Be sure to include brand names and model numbers.