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It seems that the registry entries for the CD /DVD drive might have been modified by the Registry Repair Utility that you ran.
As it was not fixed by the Microsoft Fix, so we will have to do this manually. But first try these steps:
1. Got to start >> click on My Computer. Check if the CD/DVD drive icon is present.
2. Go to start >> go to run > type devmgmt.msc and click on OK
3. Check if there is a yellow bang next to the CD/DVD drive in the device manager window that comes up.
4. If the CD/DVD drive is not present in the Windows Explorer and there is a bang next to the CD/DVD drive in device manager, then we will have to modify a registry entry.
5. Go to Start > click on run > type regedit and click on OK
6. Take a backup of the registry before proceeding to the next step. You can do that by clicking on File >> Export. Select the location to which you want to save the backup and then save it.
7. Find the following registry entry at the given location.
KEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
8. On the right hand pane, delete the Upper Filters and the Lower Filters.
9. Exit the Registry Editor and restart the computer.
10. Please check if the CD/DVD drive is being recognized by Windows.
11. If the above steps do not work, go to start >> run > type devmgmt.msc and click on OK
12. Uninstall the CD/DVD drive and restart the computer.
13. If that does not help, do a system restore to the date when the CD/DVD drive was working fine. You can do that from Start >> Search >> System Restore

Hope this helps.

Here’s to Good Karma