I'm having difficulties with the new computer i'm assembling, i've have all the components plugged in correctly and everything but i'm getting no detection from the monitor or tnhe keyboard or the mouse and all work perfectly fine on other computer i just want to figure this out considering i'm without a computer without this, being that i'm typing this from your local library. Anyone can help ? I'm running a 450 watt power source and 4 gb RAM.