Question Second Monitor suddenly stopped working.

[Elros]

But it works fine on other devices.
Other devices work on my PC, so HDMI input is working fine.

Windows detects it and threats as if it's working, can see it on device manager and screen settings.
But I get a blank no signal picture on the monitor.

I rerolled drivers.
I installed drivers
Checked for Win10 updates.
Nothing worked.

How can I fix this?
Thanks.

It's a laptop.
MSI Alpha 15
RX5500M GPU
Vega 11 iGPU
R7 3759H Cpu

It was working fine until yesterday, I just restarted PC and it's gone.

 

[OtapIc]

if there's another input on your second monitor, have you tried connecting it that way?

 

[Elros]

MSI Alpha 15.

I was using a secondary monitor for a while, today it doesn't work. For no reason. Just turned on the PC and realized it's not working anymore.

PC detects the monitor, can even see it on graphic settings. However, there is a "no signal" warning on the screen. I can connect other monitor as well, the same problem. It detects it and thinks it's working, but I get "no signal" on both monitors.
Both monitors work on other devices.

What might be the problem?

I already reinstalled drivers, even formatted windows, didn't solve.

 

[hang-the-9]

Do the Windows options actually show the monitor as enabled and setup for use in Multiple displays? If you have that set to only use one screen the other won't show any image. Trying another HDMI cable is a good idea also.

 

[Elros]

Do the Windows options actually show the monitor as enabled and setup for use in Multiple displays? If you have that set to only use one screen the other won't show any image. Trying another HDMI cable is a good idea also.

I tried everything, two cables as well.
It shows as secondary extended monitor because that is how I was using it. I press Windows + P to set it op and tried everything. It's not working.