Question no screen after PSU replacement

[critixal]

So, my old PSU had 250W and I got myself a GTX 1060 3gb. Of course that wouldn't be enough, so I bought the Fusion550R. I took out the old PSU and put in the new one. PC started as usual, PSU also started normally. But my problem is that my monitor doesn't have a connection. I tried it with other monitors, no solution. I don't hear any beeps, the fans are running normally and all LEDs are on. My mainboard is the "ecs z370h4-em". I tried to plug in my old power supply and it's not working. Do you have any solutions?

 

[cin19]

Do you have any solutions?

Can you list your whole PC specifications?

Is the fusion 550r new or used? because I think it was discontinued, if it is used one, you will get hte same problem, the PSU can't handle the gtx1060.

 

[pchaplo]

What are the exact power requirements of the 1060? What is the capacity of the PSU rail that you are using. Hypothesis: even your new PSU may not be able to supply adequate power to handle the PSU (or on the rail you are using). Look up the specs of the 1060, and compare to specs of the PSU. What are the power requirement vs. power output numbers?