I have had the HP DVD 630 DVD writer for 6/7 months and have been able to use Memorex cd-rs to burn cds with Nero Express (latest version with most recent updates). Lately, when I try to make a copy from a copy the drive spits the disc out indidicating that it doesn't recognize the disc. I have tried other discs including Maxells made in Japan with the same result. I have no problems burning discs from songs stored on my harddrive and I can use RecordNow to burn a copy of a copy but it's slower. I thought there might be a conflict with the two burning softwares but I had previously uninstalled the RecordNow and put it back on only after not being able to use Nero to make exact copies. Any suggestions?