New system won't POST

[philhans]

Last week I built a computer with completely new parts. The problem is that I can't get it to POST or enter the BIOS. All the fans start up normally including the CPU fan. I can also hear the HD start up as well. The specs for this system are as follows:

Gigabyte GA-P35-DS3R
Intel Q6600
2x1GB G.Skill DDR2 800
Corsair 520HX power supply
EVGA 8800GTX

There is only one setup where I can even get any beep codes. This is when the memory isn't installed. I have tried taking the motherboard out of the case and booting it with just the motherboard, CPU, and memory. I also tried booting it with just the motherboard and memory and I still didn't get any beep codes. At first I thought it might be the memory since taking that out was the only way to get any beep codes. So, I tried some Corsair XMS2 DDR2 800 in addition to some Kingston DDR2 667. Both of them yielded the same results, no beep codes when in, and a 3 long beep code when they weren't in. From what I have read, the 3 long beep code is just the standard memory error code for Award BIOS, which makes sense since there isn't any memory in when I get it. I have also tried a different power supply that I know is working and didn't get any results. At this point I am thinking that it has to be the motherboard and that I should just RMA it. Does anyone have any suggestions of other possible problems or things to try?

 

[mechBgon]

Is the ATX12V cable connected? In this photo :camera:, it's the "4-pin CPU power connector" at the bottom left. Sometimes this gets overlooked. Also, you got the 8800GTX's auxiliary power cables hooked up, right?

Welcome to the Forums, by the way

 

[thegorx]

if I'm understanding correctly it sounds like it might be the video
meaning it is posting you just can't see it.
try a CD or a floppy, floppy drive sound is an easy way to tell if it reading that drive, CDs make a good amount of noise too, so you can tell if it's reading it.

 

[philhans]

Yea, I forgot to mention that I definitely connected both power cables. As far as the video issue, I considered it being a video issue, but I'm pretty sure the speaker would make some sound even if the video card was messed up. The fact that I don't get anything lead me to think that it wasn't the problem