Computer only reading 4 out of my 8gb of memory (Update)

Mr. Koaliti

Honorable
Nov 13, 2013
108
0
10,690
Before when I booted up my computer to bios, it said I had 4gb of ram installed. But when I booted up windows it said 8GB and could only use 4GB. Now when I booted up my computer all the fans start up and I can hear everything boot but I but my display wont work (Its only black and my monitors still say 'no signal') and there is a red light next to my memory. Can SOMEONE help me?

My build: http://pcpartpicker.com/p/QPjqBm

I am running on 64bit windows but because I cant even get that far it doesnt seem like it matters...