Steps I took:
1) Teared it down to troubleshoot 8 beeps, removed 1 video card and it came back to life.
2) Used a very strong air blower to remove dust from the fans and other places.
3) Replaced with a new display.
4) Turned it on successfully, plugged in an usb installer for windows 7 went to the other room and when I came back it was completely off.
I noticed the power adapter lights was off too so I figured it had something to do with it, I plugged it on another socket and the power adapter lit up again, and then when I plugged it into the laptop the power adapter's light went off instantly.
Won't turn on via battery or power adapter, tried resetting CMOS, didn't work.
EDIT: I notice when I plug the power adapter in I hear like a very low "KUH-CHEE" sound