People can`t watch . (LG DR385 Super Multi DVD Recorder)

[qanda]This question is published in the hardware section for the LG DR385 Super Multi DVD Recorder. Click here to view full specs.[/qanda]the dvd`s I burn on this LG DR385 DVD RECORDER can not be played on a computer, laptop or any other dvd player. I can watch them if I use the same dvd burner. I mean this one.
what might be wrong?
I bought this at wallmart in mexico and I live in mexico.
I know it burns dvds because I can watch them on this dvd writer.

Have you ‘Finalized’ the disks?