Try playing the disc with VLC.
https://www.videolan.org/vlc/downloa...ows.en-GB.html
See
https://www.videolan.org/support/faq.html#DVDS for limitations with more recent drives.
Oops, turns out recent is perhaps after about 2006:-(
I would try VLC in any case.
You can buy a region free USB drive for £10.
NOT recommending this one just the first I noticed by way of example.