DVD issues

Hello everyone, this will be my first post, and I had this issue with vista and there was a fix prepared by microsoft but nothing I can fine for Windows 7. THE PROBLEM: OS installed no issues, did a cleaning of the system to find later that my DVD drivers and processor are not seen by the system. I started the regular checks the internet; Sony, shows no firmware or drivers on there site, next the blog site I knew of, and could find anything anyone else posted, Ideas anyone?

Why would you do a 'cleaning' of the drivers?

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