mrwrestler 0 Newbie Poster

My DVD Burner which came with the system installed writes whatever I put on the disc, whether it be .ISO's regular programs or things I need stored. It always get's to about 99% then it says an error occured, I've also tried using Nero, Roxio, and Slysoft's programs but they all do the same thing, and as well if I remove the DVD it has the darker or lighter(whichever it is) section like it has been written on, but nothing is ever found on the DVD. It's really bothersome cause I need data backed up so I can reformat my computer.
Any help would be GREAT thanks.
Zach.