I am having a problem with DVD+R DL media with a HP m7480n Computer with Windows Vista Installed. I am using a Lightscribe Super Multi DVD writer. The problem is that I have brand new blank discs (DVD+R DL), but when I put the discs in the drive Windows, Nero, CloneCD, and MagicIso all claim that there is no disc in the drive. Then after hours of mucking around with it I went to sleep, woke up and it worked I was able to burn the DVDs. But after the Burn Process failed I bought new DVDs and theyre not being recognized anymore.