Sometimes, the preconfigured models of Sony VGN-SZ DVD drive getting error not because of mechanical problem but the optical driving is missing. Usually, the DVD drive seems unrecognized well by the computer. If you check it at the Windows Control Panel system, you can’t see the DVD is exist.
To resolve the problem Sony VGN-SZ DVD drive getting error aforementioned, you can try to edit the registry. Here are the steps you can follow, just be careful as using the Registry editor incorrectly can cause serious problems:
Open Registry by click the Start button, type “regedit” in the search box and press Enter
Double-click the HKEY_LOCAL_MACHINE folder.
Double-click the System folder.
Double-click the CurrentControlSet folder.
Double-click the Control folder.
Double-click the Class folder.
Click to select the {4D36E965-E325-11CE-BFC1-08002BE10318} folder.
In the right pane, click to select the UpperFilters registry value.
Click Edit on the menu bar
Hit Delete and confirm by click the Yes button
Click to select the LowerFilters registry value in the right pane. Click Edit on the menu bar Hit Delete and confirm by click the Yes button. REMEMBER to NOT delete the UpperFiltersBak or LowerFiltersBak registry values.
Now after close the Registry Editor window you need to restart the Sony VGN-SZ machine. Wait until completely booting and watch the result