This hack might help if your optical drive isn't being detected.This hack is applicable if your drives disappear after you uninstall any softwares or have disappeared for no apparent reason.
Open the registry editor by typing regedit in the Run Command and navigate to this :
HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
Delete the values inside the keys UpperFilters and LowerFiltes.If that doesn't seem to work go ahead and delete the keys themselves.You'll need to reboot to see the effect.
