24 pin power connector, powers on, add the 4 pin, does not. (Asrock 960GC-GS FX)

[Nekrolysis]

My other computer suffered from a power outage and it would not display picture anymore. Tried putting another gfx card in and it would not work. Figured the mobo was shot, so I got this mobo as a replacement.

Problem with this one is I can have the 24 pin power connector in and it will power on just fine. But once I put in the other 4 pin connector it will not turn on. Only the power LED will turn on, and I can not turn it back off by holding the power button. All this is while it's bare besides the processor which is a FX-9370 4.4ghz

What could be causing this? Power supply? Or just a bad mobo?

 

[Dark Lord of Tech]

It won't turn on because that CPU isn't nearly compatible with that motherboard.

That board can't even run the 8320 or 8350.

 

[Dark Lord of Tech]

Your motherboard choices for the 9370:

ASRock 990FX Extreme9
Asus Crosshair V Formula-Z
Asus M5A99FX PRO R2.0
Asus Sabertooth 990FX R2.0
Gigabyte GA-990FXA-UD3
Gigabyte GA-990FXA-UD5
Gigabyte GA-990FXA-UD7
MSI 990FXA-GD80V2

AMD.COM
Warning: This power draw of this CPU is almost twice that of the average CPU. Due to this, AMD recommends using at minimum a 1000W power supply. For cooling, AMD recommends using either either closed loop liquid cooling or full system liquid cooling.