Solved: How is my computer not working!?

So I'm on my third motherboard. The first two apparently "broke" So I got them replaced.

I thought it was the sound card breaking it but now on my third one it still doesn't work!

One the second one, it got to post or w/e but when I moved the sound card it broke.

This third time, the monitor goes into power saving mode.

What else is there for me to do!? It cost me $2100 and now its ballooned to $2500 thanks to shipping and stepping up to the 9800 GX2.

What could the problem be??

This has been the worst experience of my life. Biggest mistake ever. Where can I sell the working parts and get a good deal.

Also, I tried the test outside the case.

 

lol.

DVI-I cable was in backwards!

ROLF!!

I was about to cry, now a wave of overwhelming happiness has come about me!

How does a dvi-i cable go in backwards!! It didn't even fit!!