You are not alone, I’m looking for help with exact same problem. Mine is a HP dvd640. I have had this problem for a while I have just been to lazy to try and cure it until now. It’s been easier to send files to my son’s computer and burn them, but this is a problem I am going to find a soultion for. Going to see what the HP boards say , if anything, seems a good place to look since we are having identical problem.
Edit – Sorry forgot to say, I am just using the old WMP to try and burn with, not anything else. With DVD’s I use the HP DVD that came with the writer. Do you have any of the DVD Clone software or AnyDVD software installed ??
I am curious if my using those has maybe changed something in the settings that I did not notice. ? I will post back if I find a solution for this problem.