After updating or uninstalling WaveLab, the CD/DVD drives might not show up in Windows "My Computer".
Sometimes the uninstall process does not remove the registry entry.
WaveLab needs a filter driver to work correctly with these OS. If the driver is not available on the hard disk but is still listed in the registry, Windows removes the drives from "My Computer".
[Start] -> [Run], type "regedit", open registry key:
Doubleclick entry "Upperfilters"
A new window showing values opens. If ASAPI is still installed one of the values is "ASAPI".
If after deinstallation ASAPI and the Upperfilter value are still listed, delete the Upperfilter value manually.