virtualbox.org

Don't select to detect. Just move on and it should be fine. You should be allowed to select that manually.

I gave it another shot and selected „no” at the above step. And after that, after I selected manually the layout, the computer restarted itself . I don't know if I will be able to use this normally

Sounds to me like you have a hardware issue of some kind. I doubt that anyone will be able to help you through this remotely since host issues require hands on to really do any good.

Unfortunately I think that this might be the cause too. So I'll have to buy a new laptop in order to make this to work. Thanks for your time anyway !