Question No monitor signal after installing new PSU

[faxiiz]

Hello

I received my new PSU yesterday and put it in my computer, but now find that the computer will not send a signal to my screen, despite the fact that the computer seems to turn on (Fans are running, lights on the motherboard, etc.)

The only thing I can see on the motherboard is that there is an orange LED next to "CPU dram" that lights up when I start the computer, but this can apparently mean many different things?

I have tried:

• CMOS reset
• Switch to old PSU
• Connect another monitor
• Switch to integrated graphics on my motherboard
• Take RAM in and out
• Start it with only 1 RAM installed
• Try with another CPU (Brand new)

Specs:

• CPU: AMD 5 3600 (Also tried with other, new CPU)
• CPU cooler: AMD Stock cooler
• Motherboard: ASUS ROG STRIX B450-F GAMING
• PSU: NZXT C-Series Gold C650 - 650 Watt
• RAM: 2x 8 GB Corsair Vengeance LPX DDR4-3200
• GPU: Nvidia GeForce GTX 1060 6GB

I'm at a loss as to what else I can try.
Anyone tried it before and experienced this problem? I have spent so many hours now trying all possible troubleshooting methods I have found online, but to no avail.

 

[SkyNetRising]

I'm at a loss as to what else I can try.

Your new PSU is fully modular.
What was model name of your old PSU? Was it also fully modular?
Did you change all modular PSU cables to new ones?

Using wrong/incompatible modular cables can damage/kill hardware connected.
They are not generally compatible between different models.
Even same manufacturer different model PSU cables can be incompatible.

 

[faxiiz]

I am not sure, but it was a very old one (around 12+ years old) and was non-modular.
Yes, I have only used modular PSU cables that was included with my new PSU.