CD or DVD drive not found in Windows 7

If your CD\DVD drive is identifed by your BIOS but not by Windows 7 then try the following:

• Run regedit.exe
• Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ControlClass
• Delete both UpperFilters and LowerFilters in the right-hand pane
• NB: Leave both the UpperFilters.bak and LowerFilters.bak entries

If this doesn’t work then try resetting the drive letter using the following:

• Run the Disk Management tool
• Choose ‘Create and format hard disk partitions’
• If the DVD drive is present then right click it and select ‘Change Drive Letter and Paths’
• Click ‘Change’ and select a new letter
• If the CDDVD drive is now visible in Explorer you can change the letter back
• If it is still not visible then reboot and it should appear

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