Have problem building first computer

binary8ball

Honorable
Dec 21, 2013
6
0
10,510
I am trying to do an external boot on a computer I am building. I have the psu plugged in everywhere it needs to be and I am not getting any image from the monitor when I try to boot. Can someone tell me what I am doing wrong or help me find out what is wrong? Thank you for any answers or help in advance.