Well I did what II2II suggested and took a multimeter to the power supply. First off idk if this is another symptom, but when the system board is unplugged from the psu, and u turn the psu on, it makes a pulsating ticking noise. And I tested the voltage, II2II was right about the square end being ground, the rounded end was 5, but the middle which was supposed to be 12 was only about 2. Also the voltage from the non-ground section of the connecter fluctuates in succession with the previously mentioned ticking.

I hope this will help on the diagnosis, thanks again.