Help, new computer build won't show a display

My current new build

EVGA GTX280 with hydrocopper 16 video card
EVGA 780i SLI motherboard
Ultra X3 1000w Powersupply (12v = 70A)
Seagate 250mb 7200rpm Hardrive
Thermal Take Bigwater 760i water pump
4 1GB OCZ PC2 9600 Ram

Hi I'm new to the board I was reccomended here by a colleague at work. I am having an issue with this build, I have called EVGA numerous times to troubleshoot, originally the MB turned out to be bad, it went straight to FF on the LCD display on the mobo, so I had it returned and the next one seems to boot up fine.

Then I plugged my 25.5" SAMSUNG syncmaster t260 into it and it only went into sleep mode. I tried the monitor on my laptop and it works fine. EVGA suggested to try the video card in different slots and make sure it is seated properly and finally suggested for me to buy an inexpensive video card and try that.

I purchased a PNY Nvidia 8600 and plugged it in and had a fine display on DVI and VGA outputs. EVGA decided to RMA the video card as well. Now I have the next video card and it's the same problem still. The Monitor does not ask me to check the signal it just goes into sleep mode (a black screen, the power light at the bottom blinks) I've tried alot, I called the power supply company and asked about the modular connections making sure I wasn't plugging the video card into the wrong slots or anything. I tried flashing the CMOS and it still comes to the same problem. I tried going to just 1 stick of ram and tried 3 different sticks each as a single, same problem.

I'm at my wits end and EVGA is throwing blanks now, I don't think they want to deal with what seems like 25+ phone calls and 2 rma's. There is one light on the video card on the back and it is green. (turns red when I pull the power out from the video card). What really bothers me the most is that the crappy video card worked fine, but this one isn't. I asked EVGA if a DDR3 memory video card was compatible with the DDR2 780i and they said that was fine. They even asked me to barebone the system again but there's not much else I can take out when I've only the video card, processor, mb , and 1 ram stick in. Heck I even tried it with no ram and it beeped alot and gave a 7F. So yah anyone else got any ideas, I'm about to call EVGA and tell them to send me another video card I don't know what else to do.

Thankyou for looking into my super long read.