Follow this procedure to resolve the issue if the CD/DVD drive is not showing in the Computer window or if the drive icon has a yellow exclamation mark in Device Manager or showing code 39:
(i) Press the Windows key on the Keyboard and then press the "R" key while holding down the Windows key to open the Run dialog box.
(ii) Then, type "regedit" in the Run dialog box and click OK to open the registry editor.
(iii) In the Registry Editor window, in the left pane, double-click the HKEY_LOCAL_MACHINE folder.
(iv) In the HKEY_LOCAL_MACHINE folder, double-click the System folder.
(v) In the System folder, double-click the CurrentControlSet folder.
(vi) In the CurrentControlSet folder, double-click the Control folder.
(vii) In the Control folder, double-click the Class folder.
(viii) In the Class folder, click to select the {4D36E965-E325-11CE-BFC1-08002BE10318} folder.
(ix) In the right pane , click to select the UpperFilters registry value then right click on it and select Delete to delete the value.
(x) Repeat step "ix" for the LowerFilters registry value.
Note: If any one of the registry value is not available then it doesn't matter. Delete the registry value which is available. Do not delete the UpperFiltersBak or LowerFiltersBak registry values.
(xi) Close the Registry Editor window.
(xii) Restart the computer for the changes to take effect.
To resolve the issue i suggest perform the steps given below
1. Go to START -------> RUN command and type (devmgmt.msc )
2. After that device manager window pops up on the screen, all you need to do is uninstall CD/DVD drive by clicking right click and press on Uninstall option
3. After uninstalling CD/DVD drive from the devicemanager , restart the notebook, The drivers which you had uninstalled will automatically retrive by windows , This should resolve the issue. Have a grat day.
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