"no Input Signal" When Turning On The Pc (on Monitor)

Hello.

I am fairly new to building PC's.
I got the ASRock B450M Steel Legend MOBO and wanted to now:
BIOS version P2.90 supports the AMD Ryzen 5 3600.

If I turn on my (newly) built PC, fans are spinning, LED seems to be working and you can hear it turning on, I get a blackscreen and can't get into the BIOS, "No Signal Input" it says on the monitor.

- I know that the monitor works 100% because I checked it with my other PC
- I checked the HDMI connector
- I checked the PCIE connector that connects the PSU to the GPU (Nvidia GeForce RTX 2060)
- I checked the DIMM slots if the RAM is correctly placed into the MOBO
- I checked if the GPU is correctly placed into the PCIE x16 slo

- HDMI is plugged into the GPU port

I am wondering what's causing the issue then. Someone someone suggested that I try to connect the GPU to the monitor via a DVI cabel because of "secure boot".

If somebody has got any suggestions on what to do to get into the BIOS, I would gladly appreciate it.

Thanks.

 

What monitor are you connecting?
Might consider returning the graphics card
If you are still setting it up, then fast boot would not affect it, s no operating system is instlled