Try this if the optical drives are not appearing in My Computer or Device Manager. This is
sometimes caused by the removal of Roxio software. Run regedit and navigate to registry key
08002BE10318}. Highlight it and in the right pane, find the Upperfilters and Lowerfilters values.
Highlight each one in turn, right click and delete them. Close regedit and restart the computer. If in doubt make a restore point before making changes.
CD writing problems