1) What drive have you bought exactly
2) What brand disks are you trying to burn to
3) How is your burner not working? Does it always fail at 10% or does it refuse to start burning, Does it finish burning and then say that it failed?
There's a hundred and one ways a DVD burner can not work, we need to know how exactly yours is failing before we can help. What model of drive are you using (Benq 1620 or 1640?) what brand of disks are you using (it's more important than you'd think), how is it failing to burn disks exactly?
If you don't give more information you'll never get an answer.