Sucess! Very easy solution: chkdsk /f c: First, I've boot the PC with WinPE (http://sergeistrelec.ru/winpe_10_8/103-winpe-10-8-sergei-strelec-x86-x64-native-x86-20170504-english-version.html), so I've got a lot of tools to analyse. But at the end, this Video https://www.youtube.com/watch?v=eDVBkPGZUSM gaves me the hint with "chkdsk /f c:". It was not neccessary to change the permissions.
Hi Guys! Yesterday I encrypt my Windows 10 partition with VeryCrypt 1.19. Everything works fine! But today, no password input appears and Windows hangs in an auto-repair loop and no longer starts. I used the "VeraCrypt rescue disk" and select the option "Restore VeraCrypt loader to boot menu". Now, the password input is back, but the message appears that I would have entered the wrong password. I have entered it several times, but no chance, my definitely correct password is not accepted anymore....