My DVD Drives suddenly stop working...

Dear all,

I cannot longer play or access my DVD drives. The drive letter is not showing on Computer section in Vista.

In device manager, at DVD/CD Rom drive section, there is a yellow exclamation mark on HL-DT-ST DVDRAM GSA-T30N.
On its properties, General tab, there is a error message :
"Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged. (Code 19)

I tried to download the correspond driver for the DVD drive but with no luck. There is no driver directly from Lenovo, it uses Vista default driver.
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-70439

Microsoft knowledge base site clearly states that this is registry related problem.
http://support.microsoft.com/kb/310123
I downloaded free registry cleaner program CCleaner, http://www.ccleaner.com/, with also no luck. It cleaned up the registry but my drive still is not showing on Computer.

Any help to restore the drive without reinstalling Vista? I do not remember what updates i have applied (mostly automatic). But i rarely install programs.

I use R400 7443-TGA.

Please help me. Thank you.

 

You tried deleting the drive in device manager? This may be of interest.