Can you navigate to this location:
IO error: C:\Users\Internet\AppData\Roaming\Bitcoin\chainstate\713704.ldb: Zugriff verweigert (access denied)

from the command line? 

The IO error and access denied messages would seem to indicate that it can not access those directories, so you should try and see if they are accessible.

Also, as long as I am asking, what version?  (probably not relevant, but who knows).