Hello everyone, I'm contacting you today because from one day to the next my Laptop no longer gave any signal to my Huawei screen.
Both the cable and the screen have been tested and are working perfectly.
So the problem is with my machine.
All my drivers are up to date.
I'm on Windows 11 (but the problem happened when I was still on Windows 10).
I can't launch the Nvidia Control Panel.
And I haven't tried using DisplayPort.
The IT technician who tried to repair my computer managed to remove a "! "which was displayed in the space I've circled in the image attached to the message.

When I plug my computer into my Huawei screen, it "lights up" and displays "HDMI No Signal" automatically. This gives the impression that it is detected, but my machine is not transmitting the image to my screen.

I really need your help please.