Computer powers on but nothing on screen 2 beeps

Hello,
I am having trouble getting my computer to work. I left it on in the morning. When when I came back in the evening the screen was black.

When I power it on:
Fans all spin and lights light up on motherboard.
Makes 2 short beeps very fast, one higher and the second lower in pitch.
Screen stays black, no booting occurs.
After a minute of being on the motherboard makes another short higher pitch beep.

I have tried removing all the ram and using only 1 stick, with different sticks.
I have tried holding down the power button for a minute with the power cable unplugged.
I have tried removing the battery and putting it back.
I have cleaned all the dust and reseated the graphics card

Num lock on the keyboard works and toggles the light, however caps lock and scroll lock do not. My mouse does not light up.

Please help! I have run out of ideas on what this could be!