Is the power button hooked up to the motherboard? Newer power supplies won\'t power up until a power button is pressed, which is attached to the motherboard. If your power supply has a switch on it make sure it\'s on else the power switch on the mobo will do no good. If it doesn\'t have a power switch, then basically it\'s always on (again, just press the power switch that\'s connected to the mobo). Once you\'re familiar with how this works, you can find where the power switch hooks up to the mobo and simply short the two prongs with a screwdriver (does the same thing as the power button...it completes the circuit momentarily...just put the screwdriver on the connectors for half a second then remove).
If this makes no sense...just hook everything up. Don\'t try the power supply by itself until you have all the wires plugged into the mobo (bunch of little ones...for the case speaker, power button, hard drive led, power led, etc.).
