So then I unplugged it, opened the computer up to check for loose wiring, cleaned my fans, plugged it back in and hit the button to the same effect. It seems I have to unplug it and plug it back in, in order to get the lights to come once, after that it won't until I unplug/plug. I tried something else once and held down the power button. The lights flickered on and off (again no noise, nothing on the monitor) until I let go after a good minute then it stopped as usual. The only things that powered up were the fans, the CD drive didn't work.
Opened it up again, I checked the power supply and tried to open it, but failed to due to some of the screws being.. defective and jammed in (I now hate gateway/emachines), so I gave up on it. I noticed in the power supply that there was yellow goo along one of the copper wiring (it looked like a half ring of copper coils) so I took a guess that something melted and the problem is the power supply, but I don't know much bout computers to diagnose it myself.
I talked to a Gateway tech but he had no answers for me.
Other things to note here:
The ethernet light on the computer is lit.
My mouse/keyboard do light up and stay lit up.
The power light in the back of the comp is lit.
Nothing appears on the monitor at all, anytime.
I didn't smell anything burning or burnt.
No system noises that are normal for system bootup.