Hp 740b Burner won't recognize blank CDs

By scrooge
Jul 14, 2007
  1. My DVD/CD burner won't recognize blank CD-R disks any more. Here is what I've done.
    Deleted the drive from Device Manager, and rebooted.
    Removed the Upper and Lower Filter files from the Registry.
    Installed the latest firmware from HP.
    Removed Sonic (the originally installed burning software) and installed Nero.
    Cleaned the Registry of junk files and broken shortcuts.

    The drive still reads CDs with data already on them, and will read and burn DVDs.
    I've also discovered that the second drive, a DVD-ROM doesn't see blank CD-Rs either. So this must be a software problem.
    I've heard that the original software burning program can be the culprit, but I've removed Sonic. Is there some other burning software I may have missed?
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