pc wont post after power supply change

[Tannerbobanner]

I was installing my new Powersupply (Specs Below) so i just plugged everything in etc. and My CPU_LED Flickers once when i hit the power button on my case and the Power supply fans turn on for a second then nothing else happens. once i do this, if i press it again it will not repeat the same step it will just do F*** All

What I've Check'd
all jumpers in correct position
Ram is fine
checked if all psu cables are in

PS: Another test ive conducted is shorting the green and black cable on the ATX connector while plugged in which i believe are numbered 18,19 correct me if im wrong and it just does the same thing

AND Yes the motherboard can power this cpu because i had it working with a 700W powersupply the PSU just couldnt keep up with the cpu's demands when gaming.



Please help me

M5 A99FX R2.0
AMD FX-9590 w/ Noctua NH-D15
Sapphire R9 290X
2X8 DDR3 Crucial RAM
250GB SSD
1TB HDD
Blu-ray optical drive
NZXT HUE LED Controller
Antec CP850W ATX12V PSU
Corsair 750D

 

[SGraph]

The PSU is dead or the connectors are not connected correctly.

 

[Tannerbobanner]

The PSU is dead or the connectors are not connected correctly.

Well the PSU shouldnt be dead because its providing power to the motherboard the green standby light is on, can you give me a list of connectors that should be in because to me it looks like theyre all in

But if theyre in correctly is the question, i assume i should check the 8 Pin CPU connector first if thats the light that came on.

 

[Tannerbobanner]

got anything else Or ways i can test if the psu is dead, I mean everything is connected

 

[SGraph]

Are your power switch connected correctly