please help. my dvd drive "lite-on dvdrw sohw-1633s" will burn films to dvd but it will not play the copied discs.the discs play ok on my tv dvd so i know they have burned ok.i also know that the drive should be able to play dvd- and dvd+ recorded discs.when i put an original dvd film in it plays ok!

please help

john r

p.s my comp is a packard bell and came with hte drive installed from new