I have dvd rw drive by Toshiba and the model is sd r5372. The system recognizes it as a dvd rw drive and it will read everything but, it does not seem to want to burn any dvd's. I have checked and it has the latest drivers and the latest firmware. It appears like it burns a disk in some programs but, after disk is ejected you will notice that it has never written anything to the disk. Any ideas??????