Most DVD players from stores are region locked to the area they are sold
in. So a unit sold in Japan will not load a US sold DVD, Same if the DVD
was sold in the UK, it will not play on a US player.
Now the DVD drives in a computer are somewhat different but they are
still only set up to allow 5 region changes and will lock on the last
one set. Unlike the store bought DVD players the companies allow the
drives to be reset because people move or buy hardware from companies
outside their home countries and that allows the drives to be sold from
anywhere.
Want to see if that is the case with the one in your machines, Right
click on the drive and look at the hardware properties,
on any windows machine you will find the 5 region warning in there under
DVD Region. If you have a DVD recording drive most machines won't allow
another DVD player to operate either. I suppose for the price of them
you might try it but not sure what will happen.
What might work would be to remove the internal drive or switch it to a
CDROM and use external DVD drives. That might work.
--
Steve W.