What exactly is happening, does the machine power up at all ?
Disconnect everything except 24pin and 4 pin
Have you checked the power switch on the power supply is on ?
Have you checked you power button case connection ?
Yes, this isn't my first time building so I know everything is connected...
so I have disconnected everything. what do you recommend i do to test out my PSU first?
Just to be sure because you posted that everything was connected, but now you completely disconnected your PSU; you did a quick short between the two pins on the motherboard, where the front panel power switch was plugged into correct?
If you have done that, with the PSU disconnected from everything; short out pins 15 & 16 on the 24-pin connector with a small piece of wire. Holding the clip that holds the connector onto the motherboard on the right 15&16 will be the 3rd and 4th one down on the right side. The 2 black wires surrounding the green wire on that side are COM so either should work.
PSU is shot, get a new one.
Did you touch/jumpper the two correct pins on the motherboard? The power switch pins?
Do you have a multi-meter? You could test the voltage coming off the 24 pin, but it may be for nothing considering you saw some flames. Never heard of flames from a PSU.
Yes,, ok now I saw a quick small flame come out of the side... what the hell does this mean?
What did you do when this happen?