Power supply pc does not boot

[WellHello]

Ok , so i installed a new psu (seasonic 1200xp3) , and now the psu does not start. No , it s not unplugged cords , last night it started ( again , after hours of different things from bios restoring to using specific power and reset buttons on the mobo ) . Last night it did start up a few times but after shutdown it wouldn t go back up . After a bios reset it started working normally . this morning , no boot . Everything is receiving power (checking lights) but no power . Cpu is an i7 6700k , hero viii mobo , grx 980 graphics card. Thanks for your time

[brighteyes890]

Could you show some pictures of the connections + mobo?

[WellHello]

4 minutes ago, brighteyes890 said:

Could you show some pictures of the connections + mobo?

http://m.imgur.com/r5MTJEx,oRf072B,0k0qrns,iTX2NV2

[VolkA]

What if the problem is with your home. Like my friends, his computer works in office, my house and even his grandparents place but just not in his own house. 

 

Anyway, at the top of my head I could only think of unstable power. Fault with your home (unlikely unless you are like my friend) or PSU I'm not quite sure. But then again. I might be wrong (which is like always).

[WellHello]

Update : randomly started working . Pressed the refresh bios on mobo a couple times and it booted . Thing is , the bios is untouched.