New build wont boot at all

[brandnew427]

I just built a computer. Everything went fine until I went to boot it. I made sure the power supply was on the right voltage, all the hardware was set up right and then I turned it on and pressed the power button and nothing happened. I looked at the mobo manual and made sure the power switch was set up correctly. I tried again and nothing happened. I tried the power supply that come with the case. I turned it on, nothing happened. When I flipped the switch off it made a quiet hiss. I kept checking the cables, making sure the front power switch was set up correctly and still nothing worked. Im thinking its a dead power supply or I just set up the power switch wrong.

Hardware:
Athlon 64 2800+ 939 Venice
Motherboard: ECS nForce4-A939 1.0
Video card: XFX Geforce 6600 PCI x16 256 mb
First Harddrive: Samsung Spinpoint 120 gb SATA
Second Harddrive: 20 gb ata133 harddrive from my other computer (still works)
Zalman CNPS ALCU-7700 CPU Fan
NEC Dual Layer DVD+RW drive
550 Watt X-Power PSU
Athenatech ATX Case
Ram: Corsair ValueSelect 1gb DDR400

 

[urbandragon]

well elminate what you can....

try everything in another boxz9 one you know works... find the faulty piece. or misconfigured....

 

[brandnew427]

Ill try that first. Thanks... for now.

 

[brandnew427]

The case is fine. Im going to try out the powersupply in a couple hours. After that what would I do, if the powersupply works that is. Should I just assume its a mobo problem and send it back or what.

 

[brandnew427]

The risers didnt have the motherboard far enough from the case. I switched those out and everything is working fine now.