Playing DVD on laptop

Hello All,

Could someone tell me why when playing a DVD on my new Inspiron 5000 Series it produces the picture in a 4:3 (or maybe it's a square) format. This does not happen when the same DVD is played on an ordinary DVD player where it displays in a 16:9 format.

The laptop came with a Cyberlink Power Media player. I have been advised to try another media player and have downloaded a VDL one. However, I am still getting the smaller format.

Any ideas?

Brendan