Computer won't boot.

Okay My name is nicholas Johnson and I received my computer a few weeks ago, it wouldn't boot up then no matter what I tried. I went on vacation for 3 weeks and I started to try to fix it yesterday and no luck.  I reseated everything and I even tried an old video card to see if that was the problem and no go. 

Basically the led lights flicker, some of the fans work and some don't,  They run either at very low rpm's or don't run at all.  There is no video output at anytime, the monitor always says its in power saving.  I tried reconnecting all the connections to make sure nothing was loose, and still nothing.  I am really trying to work this out here and I need help.  I called digital storm last night and was told I would get a call back that night or today, but apparently they are closed today so now I have to go another weekend without my computer which I really need for my work and school.  Especially for work that is.  Any ideas anyone?

I wasn't able to post in technical support so if you could move it there I would be very grateful.