Xbox wont "work" on my computer screen.

Hello, i have a old original xbox 360 and i decided i wanted to play some games, i'm using a hdmi cable on a computer screen that have worked before. But now it shows "no signal". But the weird thing is that my controller wont work too. But everything is
working when i'm using a AV cable on my TV, the screen and controller both.

I have tested everything. But i can't do much because when i connect my xbox to my computer screen the *** controller wont work. So can anyone please help me?

:)

 

I can't delete my Xbox created club

i feel as if it is on xbox side since it wont work on a computer,console or the mobile app

 

Forza Horizon 4 - Internet problem.

I tried every single step again but nothing works. Its still the same. I am getting "joining horizon life" but i ain't getting into a server online. And i think thats because its blocked but i dont know how i would fix that. I tried to disable and then
enable my firewall but that wont work aswell.. I am kinda frustrated that i can't play online on the xbox app on the computer. I can join xbox party but i can't speak because my internet is "blocking"

 

Hey there, you might need to change some of the console display settings to get it to work on a different TV or monitor, you may need to initially do this using the AV cables if you can't use your controller:

support.xbox.com/.../improve-video-quality

I would also try and use the HDMI slot and cable on another TV or monitor to see if it has the same effect. The HDMI ports can fail, so trying it on different devices can narrow down the issue.