Hi Schröder
You may wish to consult the following page to assist you in the correct
way to get help with a technical problem.
https://forums.debian.net/viewtopic.php?t=116724
In particular, it would be beneficial to describe what steps you went
through to perform the install. For example:
- what installation image did you use?
- did you follow an installation guide, if so which one?
- did you encounter any errors during installation?
- what are the symptoms?
- what have you tried to fix the problem?
Regards,
Leigh.