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?