How to Delete Upper & Lower Buffers on a CD Drive
Some third-party CD and DVD burning software packages add driver buffer filters to the Windows registry. These filters do not typically affect the performance of your system, but sometimes an issue occurs where you are unable to see the CD or DVD drive in My Computer. You need to remove the buffer filters from the registry in order to fix this problem with your system. Once the filters are removed, the optical drive appears in My Computer and can be accessed.
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Instructions
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Click "Start" and type "regedit" in the search box. Press "Enter" to launch the Registry Editor. Switch to an account with administrative access to the computer if you are not currently using one with the appropriate permissions. Click "Allow" if you are prompted by your Windows security settings.
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Click "HKEY_LOCAL_MACHINE," "SYSTEM," "CurrentControlSet," "Control," "Class" and "{4D36E965-E325-11CE-BFC1-08002BE10318}" to reach the appropriate folder containing the filters.
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Right-click the entry labeled "UpperFilters" and click "Delete." Click "Yes" to remove this entry entirely from your registry.
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Right-click "LowerFilters." Click "Delete," then click "Yes." Once both the upper and lower filters are removed from your computer, you need to uninstall and reinstall any third-party burning software on your computer that does not work properly.
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