Originally Posted by Slobergoof
Okay. So here's an update. After cutting the wires and wrapping them with electric tape, I tried to turn it on but no go. I then took it apart and spliced the two wires together. My dad had a theory that the splice would form a connection and trigger the switch to power on the psu. Again that did not work. So....
I'm gonna have to splice the cables for the new fan and the existing psu fan cables. I just hope I didn't totally mess up my psu.
I don't have an answer for you, but when I swapped my PSU fan, I cut the old PSU fan wire about an inch away from the PSU fan and wrapped each individual wire in electrical tape. I didn't do anything else fancy, connecting the new fan to a motherboard header like you did. So I don't think disconnecting the PSU fan prevents the PSU from starting.
You can try some of the troubleshooting tips here: http://www.bcot1.com/troubleshooting01.html
I'd try checking your power switch header/shorting it with a screwdriver or disconnecting the power supply from the PC components to try and turn it on by shorting the green wire and a black ground wire.
I'm guessing you don't have another PSU handy to troubleshoot with?