Recently, my D : drive (a DVD writer) disappeared in Windows Explorer. How do I get it back?
The obvious solution is to open up your PC and make sure the cables are firmly connected, but if that doesn't help, an errant Registry setting may be the cause of the problem.
Open the Registry Editor (go to Start --> Run and type regedit ), and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E965-E325-11CE-BFC1-08002BE10318} .
You'll know if you're in the right place if the (Default) value in the right pane says "DVD/CD-ROM drives."
Highlight the UpperFilters value on the right, press the F2 key, rename the value UpperFilters.old , and press Enter. Do the same for the LowerFilters value.
Next, navigateto HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services , and click [+] to expand the Services branch to reveal all the subkeys. Look for the Cdr4_2K key on the tree, and delete it if it's present. Do the same for the following keys: Cdralw2k, Cdudf , and UdfReadr .
Close the Registry Editor and restart Windows when you're done.
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