Gigabyte ga-880gm-usb3 wont boot/post

Hi there I recently made a new custom build, with the Gigabyte GA-880GM-USB3 as the mobo.

Basically when I first got it, it wouldnt boot or post and no video was getting sent to the monitor yet everything would power up. Unsure what part was causing the problem I did a breadboard with a compatible alternative to each piece of hardware, from a currently working pc.

In the end the same problem was happening no matter what was and wasnt plugged into the mobo. Sent it back to ebuyer where it was purchased from and they apparently "fixed" it and sent it back. Hooked everything back up and it worked for about 2 days then suddenly just cut the power from itself only to have the exact same problem that was happening before they fixed it.

All the heat readings were fine during those 2 days and all the connections were properly attached so im unsure as to what the problem is. they didnt say what they actually did to the mobo when it was sent back but whatever it was did seem to make some sort of a difference temporarily. Does anyone know what could be causing this.

Also as a side note I have done some googling and found a few other people with similar problems just under different circumstances but with the exact same mobo.