IPhone 7 software error?

I have a problem with my iPhone 7.
Now I can't get it on, but the Apple logo is always displayed.

I tried to put the mobile phone into maintenance and recovery mode with my laptop, but without success. I also tried iTunes.

What else could I do?

Hm… There really only remains the maintenance status and the resetting on the PC… Here again the exact procedure…

https://support.apple.com/...e/HT201263