Restore missing cd or dvd drive in windows xp

Windows XP is major stake holder in OS market. There are many malicious application and virus that can cause you trouble. One of the problems is that one can easily corrupt registry and loose access to CD or DVD drive. We can easily restore it by following some easy steps.

Procedure

1. Click on Start -> Click on Run ->Type Regedit
2. Registry Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class
Key Name: {4D36E965-E325-11CE-BFC1-08002BE10318}
3.Value Data: [Delete All Value Data from UpperFilters and LowerFilters]
Note: Do not delete the Key or the Multi-String Values. Delete only the data values.
Exit Registry and Reboot