Quote:“The database D:\Data Files 092015\DVD_List.mdf cannot be
opened because it is version 869.
These aren't "typical default" paths for SQL Server data files; so, "someone" has been playing with the installation defaults.
There's a good chance there may also be multiple instances of SQL Server running that's "confusing" the situation. Look in Task Manager for server instances.
I might consider uninstall / "reinstalling" SQL Server with the "defaults" and starting over.