You need to convert the vob files into .ts
A good editor is ProjectX. On the bottom you only add all necessary vob-files and then you press the prepare button, select ts as outfile-type and press the play-button.
After 5 minutes you receive your vob-files (MPEG-2) converted into a single .ts-file (MPEG-2 Transport Stream)
The ts-file can now be copied onto your hdd and be played by using the video-button on the remote controll.