Hi hope you can help.My

Question

Hi hope you can help.My computer knowlage is very limated i have a advent 7090 notebook laptop with a phillips dvd rw sdvd8441. Untill recently i have been able to burn movie files to dvd disc and play them in my settop dvd player. Now when i go through the same prosses of converting and burning with convertxtodvd 3 that i have allways done the discs willnot play in my dvd player.I live in england so i make sure the dvd region is set to pal and i have tryed lower burning speeds all whith the same results thay wont play.When i go into the properties of my dvd drive the memory is showing full could this be the problem ?. Thank you in advance for any help you can give me.