I have an Emachine with an NEC 2500A DVD+-RW (at least Nero 6 said it was an NEC2500A) drive running windows XP. Up until recently I could read and write DVD-R disks. Something has happened, DVD-r's are not recognized by the drive anymore. I did have Video Studio 7 SE on the computer for a while as well as Nero 6. They both worked for a while before the DVD recorder had problems. I've removed both and uninstalled and re-installed the recorder. Still does not work. Only other thing I think I did was an automated Windows Update. Does anyone have any ideas?