Thanks for reply, @a_p_ André!

I have tried to replace the missing file with a copy of e.g. "Windows 10 x64-0-s002.vmdk", but it didn't work. When I go to VM's settings, I get to hard disks(Hard Disck (SCSI) and Hard Disk 2 (SCSI)), but when I click on one of them, I get the error: "The system cannot find the file specified.". Which one should be deleted? "Windows 10 x64-0-s002.vmdk" is part of Hard Disk or Hard Disk 2?