New computer built with one hitch, screen won't turn on.

So I'm building my parents a new computer because the old one broke (I know, I'm unique right?) and I have everything put together and it should go off without a hitch, but the screen doesn't get any signal when I boot up the computer. The specs:

PSU: Antec BASIQ BP-350 350W
HD: Seagate Barracuda
RAM: ADATA Premier Series 2GB
Case: Cooler Master Elite 342
CPU: Intel Pentium Dual Core E6500
Motherboard: Asus P5G4IC-M

The monitors plugged in through a VGA, and its the same monitor the old computer used, which was also plugged in that way. The computer starts and everything, its just that there isn't any video. In addition the case didn't have a speaker jumper so I can't find out if theres a beep code playing.