If you have a problem that your CD/DVD-ROM cannot be seen in my computer or exclamation mark on CD in device manager and you can do nothing about it, it can be fixed.

How come does this issue happen?

conflict happened when you have >1 CD drivers related installed. It might be from CD/DVD burning app, such as Nero Burning ROM, Roxie, or daemon app like Virtual CD, MagicISO and such.

How to fix:

First, uninstalling anything won’t help, neither will updating. What you have to do is getting into Registry editor (start “regedit”)

Then, find “LowerFilters” and/or “UpperFilters” and delete them. Look carefully, you have to delete only ones in HKLH\System\CurrentControlSet\Control\Class\{4D36E966-E325-11CE-BFC1-08002BE10318} whose Class key is CDROM. However, you don’t have to worry much if you delete in others, you might have to restart more than once since Windows will have to detect and install the hardware driver again.

After deleted those 2 keys, just restart once. Your CD/DVD will come alive.