HELP computer turns on fans and cpu run but power button doesn't work

Pepsii

Reputable
May 13, 2016
7
0
4,510
Okay so I have tested the power supply and it's fine plus all my fans run perfectly fine keep in mind I am a but new to building pcs. But what is wrong is I place the power sw and power led pins in according to my motherboard manual (Only have power sw and power led) And my power switch doesn't turn on. Nothing turns on unless I replace the pins with another cord that came with my case which turns everything on when I do this though nothing pops up on the monitor still.
Please try and help me guys.