Question Ryzen with no signal

[Fatih_1]

Hi, i've built a ryzen pc and when i power it up its running but no signal on my monitor + my powers off after 2min, why?

 

[rgd1101]

full system spec? include make and mode of the psu

 

[Fatih_1]

full system spec? include make and mode of the psu

Nvidia gtx 960, ryzen 5 1600, gigabyte b450m s2h mobo, apacer panther 16gb ram, zalman zm500 le psu, my psu have 4+4 pinned cable for atx 12v, while my mobo has 8, so i insert 4+4 to mobo is it a mistake?