How to fix CD/DVD drive not recognized issue in HP Latitude Laptop?

http://www.ehow.com/how_7612256_remove-lower-filters-cdrom-registry.html

Instructions

  1. Click the “Start” button in the lower left corner.
  2. Click “Run.”
  3. Type “Regedit” and press the “Enter” key.
  4. Navigate to the following subkey with either the mouse or the keyboard:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
  5. Right-click the Upper-Filters key, if present, and click “Delete.” Click the “Yes” button.
  6. Right-click the Lower-Filters key, if present, and click “Delete.” Click the “Yes” button.
  7. Close the Regedit program and restart the computer.
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