Power on Issue

I received my printer today and got it un--boxed, drivers/software loaded, and plugged in but the unit does not seem to be responsive. When I plug it into the USB on my PC it does acknowledge that something is plugged in, but I cannot get the motors to function. It shows that it is connected to the Repetier software, but nothing happens after that. Is it possible that the power supply is bad or maybe a wire is not completely connected somewhere causing this issue?

 

Alright, so I eventually got my unit to work after rewiring nearly the entire thing. Now my heated bed will not stay heated. Is there any solution for this?