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Hi,
I understand that you are facing issues with the DVD drive in your computer.
There are several causes of Code 39 errors:
• A required device driver is missing.
• A required binary file is corrupted.
• There is a problem with the file I/O process.
• A driver that is referencing an entry point in another binary file is unable to load.
You can fix this issue by uninstalling and reinstalling the driver for DVD drive. You can refer to the following article to fix the issue.
Your CD drive or DVD drive is missing or is not recognized by Windows or other programs
****http://support.microsoft.com/kb/314060
To do so: Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
http://windows.microsoft.com/en-in/windows7/back-up-the-registry
How to back up and restore the registry in Windows
You can download the latest driver for LG DVD drive from the link mentioned below.
http://www.lg.com/us/support-product/lg-GH24NS95
Hope it helps.
Do get back to us if you have any other Windows related issues, We will be glad to assist you.