Hello. Originally posted by Mrguss: as the Burner got old...then they start burning -R's only.and almost at the end of the burner life, just burn -RW's. ('cos maybe they burn a low speed 4x ) This may be an example of what happened to you but I don't think it's accurate to say that most dvd writers fail in this order. Here are "typical" signs that a dvd burner is not working proper. (copied from digital digest)How do you know that your burner is dead?You have done nothing with your computer - no updates of your burning program or similar actions. You are using the same media as before and even the same spindle of media.When you insert a DVD - nothing happens and the only thing you hear is a scratch sound.In Windows Explorer you can see the contents of a CD but not of a DVD.You can still play and burn CDs.When you try to burn - it will only reject your inserted media and ask for a blanc disc.Pick it to pieces and cleaning the laser head don't help.The logfile reported "Power calibration error"