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?
Man of Honour
Hi and welcome to the forums. 
First off, why on earth have you purchased a psu from 2009? Presumeably it's second hand so there's no guarantee that it was working properly in the first place and may have killed something. Are you certain that all the required plugs are plugged in? Things like the 24 pin and 8 pin (4 pin on your board) motherboard connectors and 6/8 pin gpu connectors can cause problems if not inserted all the way. Sometimes they can be tight and may look all the way in but aren't until they are pushed firmly in. Is this a medion pc by any chance because I can't find that particular motherboard on the ECS website? If it is is there a motherboard bios update for the board although I wouldn't expect any compatibility issues between a Z370 motherboard and a GTX1060?
First off, why on earth have you purchased a psu from 2009? Presumeably it's second hand so there's no guarantee that it was working properly in the first place and may have killed something. Are you certain that all the required plugs are plugged in? Things like the 24 pin and 8 pin (4 pin on your board) motherboard connectors and 6/8 pin gpu connectors can cause problems if not inserted all the way. Sometimes they can be tight and may look all the way in but aren't until they are pushed firmly in. Is this a medion pc by any chance because I can't find that particular motherboard on the ECS website? If it is is there a motherboard bios update for the board although I wouldn't expect any compatibility issues between a Z370 motherboard and a GTX1060?
Deleted member 209350
D
Deleted member 209350
This.
Also why did you buy such a old PSU? They're quite cheap these days even for a semi decent one