New self built won't boot

[rbf]

Assembled my second computer after reading "The best pc for the money" in the 10\03 issue of pcmagazine, following the author's list of components except for increasing the hard drive size.
seagate 320 sata drive
Lite-on SHM-165h6s dvd3rw
OCZ gold 2gb ddr2 800
asus p5b mobo
ZFZ GEforce 7900gt
sound blaster audigy 2 ZS
Intel core 2 duo e6600
Antec p150 case.

Only problem is that it will not show any signs of life other than the green light showing power to the mobo. I have tried the following:
tried a new power source
tried a different dvd drive
tried a different sound card
tried no sound card
tried a second hard drive (bought two)
returned the mobo, thinking it was the problem-it evidently wasn't
disassembled everthing and removed mobo to make sure there were not any unintentional grounds or potential short circuts

still will not boot-nobeeps, no nothing. It's been a frustrating week and a half.
Any suggestions?

 

[tifc8lraz]

Try connecting the cables from the power switch into the appropriate slot on the motherboard if you haven't already done so. This is a mistake I had, and I almost went crazy trying to figure it out.

 

[rbf]

thanks for the suggestion, but I have already triple checked that. Triple checked all of the wires actually.

 

[tifc8lraz]

Have you tried clearing the CMOS?

 

[rbf]

tried resetting the cmos a few minutes ago after reading another thread, no luck.

 

[Rik]

Bad cpu or ram then!!!!

 

[tifc8lraz]

Bad cpu or ram then!!!!

Has to be! Or else he received another bad motherboard.

 

[Rik]

Try it out of the case with just cpu, psu, speaker, and power switch connected, it should beep, if it doesn't then its cpu or mobo!!!!!