"No input Signal" when turning on the PC (on monitor)


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.

Have you tried a different cable? I know it seems dumb but I would try that first. Also what monitor do you have? Because I have a similar issue oersay and I just got a new lg ips led and noticed that I need the monitor on before I turn the PC on or else I get no signal.

Edit: didn't mean to Necro, I'm on mobile and first time on the site, I didn't see the date.


Posts: 50   +3
Unplug the cable running from your monitor to your PC and plug it back in, making sure the connection is firm. The most common cause of this error is a loose cable If the "No Input Signal" error still appears, the problem does not rest with the cables or the monitor, but with your PC.


Posts: 209   +0
Is this your board?

Reset bios defaults. Did you install Windows on AHCI in bios?