Installing new graphics card; Monitor wont display anything and computer beeps [1 Long beep followed by 3 short beeps}

Wyckipedia

Honorable
Feb 5, 2014
4
0
10,510
I recently got a new Graphics Card and decided to try installing it.
I disabled the last graphics card, got rid of the driver updates, turned off my computer and tried installing the new one.
Once I started my computer back up it gave me 1 long beep and 3 short beeps. Nor did the monitor display anything.

I'm not sure what information I should type out, but if you could tell me what you need to try and fix my problem I'd gladly do it.
 

Wyckipedia

Honorable
Feb 5, 2014
4
0
10,510


The new video card is a Asus HD 7770 and my Motherboard is an Asus P5N-E SLI
And I'm positive I didn't.