MSI 970a-G43 Power without 8 pin ATX but not with it?

Jambajuices

Honorable
Nov 20, 2013
1
0
10,510
My build
MSI 970A-G43
AMD FX 4300 Quad core 3.8 GHZ
1 x 4 PNY 1.3 ghz ram stick
HD radeon 6770 1GB GDDR5
250 gb HDD
RION 585 Watt

So weird thing. My motherboard will turn on with the 24 pin connector without the 8 pin ATX near the processor being plugged in, but as soon as i plug in the 8 pin my motherboard wont start up at all. What is going on?