Back story
Okay about 2 months ago I decided to scrap my old Dell office computer and build my own gaming computer. I went and ordered all the parts I'd need that would still fit my budget.

What I bought
Graphic Card: MSi R5770-PMD1G
Motherboard: ASUS M4N98TD EVO
HDD: 512GB
RAM: 8GB
OS: Windows 8
(No idea what the rest is because my brother got them from his old computer)

The PROBLEM
It was working flawlessly until 3 days ago. I was playing battlefield when I randomly got the blue screen of death.
I let the computer sit for about an hour before booting it up again only to find that whenever I did, I'd just get a 'No signal' message on the monitor, then the monitor would switch to sleep mode.

When I boot the computer up it would start fine, then after about 3-5 seconds it'll go very quiet (you can still hear it) then the DRAM_LED would light up red for about 5 second then it would stop lighting up and the computer will go back to the normal sound before the light, but still no signal to the monitor.

I'm really hoping I haven't somehow bricked the motherboard

Things I have tried
1. Removed the RAM, cleaned it and the RAM slots.
2. Completely rebuilt the computer.
3. Booting with a different graphics card. (Still didn't work so it's not the card)
4. Removed all wires other than the power cord and AVI cable.
5. Tried several other AVI cables.
6. Tried two other monitors.
7. Cleaned the entire computer from dust.
7. Reset the CMOS .
8. Tried booting with each individual RAM stick w/ each individual slot.

I'm on the verge of buying a new motherboard but I really don't have the money to be doing that right now. Does anyone know anything else it may be?

Thanks all - Jasper-

EDIT: Oops. This is supposed to be in support isn't it..