Cant get computer to respond

[Djcham445]

Hi, I jus Built My Own Computer, which of course was a bad idea. It was working great for about a month. I replaced The Mother Board and The Power supply and still wont turn on. I got it to power the fans on at a really high speed but still not responsive. I took out the ram and Graphics Card, and still not responsive. The Green Light on the Mother Board is lit up. I'm not sure what to do.

Specs.
Power Supply: 600 W Thermaltake.

Cpu: Intel Pentium Dual Core E5300 775 Socket

MotherBoard: Asus P5G41-M LX2, G41 Chipset, DDR2, PCI Exp 16.

Graphics Card: Nvidia GeForce 9500 GT, 512 MB,DDR2,DVI-I,HSCP

Ram: DDR2 667mhz

 

[Txontirey]

Graphics card

If you took out the graphics card, i wouldn't expect anything to show up on the screen....

 

[Txontirey]

oh... HDD

And some PCs just won't read from a broken HDD... try replacing the existing HDD with another one. see what happens!