check the hashes of your ISO: Windows Vista (x86) - DVD (German) File Name: de_windows_vista_x86_dvd_X12-59016.iso SHA1: F109E625DFFB7E3B31871DC24C24404F27C0558F ISO/CRC: 1632DB4B Windows Vista with Service Pack 1 (x86) - DVD (German) File Name: de_windows_vista_with_service_pack_1_x86_dvd_x14-29611.iso SHA1: CBA93617BCD6CB5ADF00A77797A1D7253101393F ISO/CRC: 2BDB8C3E