My pc wont start

I was replacing older hardware with newer hardware. So as i turn on my pc nothing shows up on the monitor due to all the changes, so i decided to reset the BIOS which i think i did it sucessfully for i moved the jumper to the reset cmos and i saw an instant flash in the motherboard. Now everything is inserted properly and the fan in spinning and everything runs inside the pc but how do i view the monitor i get no signal but i'm sure i did everything right? everything is plugged in properly and nothing is faulty for i changed a video card and that's what started all this trouble, also i have no beep noise when the pc starts.

Before i made changes i had:

JW-H67M-USB3 motherboard

8GB RAM

Onboard Graphics

3V CR2032 Newsun Battery

After upgrade:

12GB RAM

ATI Radeon HD 5450 Graphics card

3V CR2032 Lithium Battery (brand new never used)

via Bleeping Computer Last 20 Posts http://www.bleepingcomputer.com/forums/t/510310/my-pc-wont-start/