Building a computer

[drumrave]

and I cannot get a video output to my monitor. I have an Asus M4A78T-E mother board, AMD X4 Phenom II processor, 500 GB of HDD 8 GB of DDR3 Ram and everything is hooked up. I sent the mother board back, got a new one and had the same issue, so I bought a new processor and put the new processor in the mother board and still no video out put. I have tried through the DVI and VGA.

Can any one help? Maybe something to check or any tips on maybe something I didn't connect? Is it possible this mother board is bad also?

EDIT: Also the power supply is 650W so more than enough for what I have.

 

[Atomic Rooster]

Are you using the on-board graphics or an add-in graphics card? Does the system beep at all when you turn it on? Make sure to check for any shorts such as a misplaced standoff under the motherboard.

 

[drumrave]

I don't hear any beeps at all when I turn it on and I am using the onboard graphics though I have an Nvidia 8800 GTS graphics card, but I thought that you had to first disable the onboard graphics in bios before installing the graphics card

 

[Atomic Rooster]

Yes, depending on the motherboard, you may need to disable the onboard graphics chip to use a graphics card. Have you double checked all wires, cable, and power connections?

 

[drumrave]

I double checked and had someone else check. All the lights come on and all the fans come on.

I'm going to triple check

 

[Atomic Rooster]

You could try removing the board from the case and try booting it then.