Hi @yayiz, and welcome!
I’m presuming your native language isn’t English. (Don’t worry, mine isn’t either.)
Fixing it depends on what needs to be fixed. Not if it can be done, but how it needs to be done., what needs to be done.
I’m also pretty sure that’s exaggerating it, but nevertheless, can you boot up now?
If so, open a terminal and provide more information, please. Also see:
- [HowTo] Post screenshots and links,
- [HowTo] Request support, and
- [HowTo] Post command output and file content as formatted text.
Also, from a terminal, please provide the output for:
journalctl --priority=3 --boot=-1