Helping Rob - LG DVD Drive

Rob has a problem with his new DVD burner. He say's everything works fine until his computer goes to sleep. After he wakes it up, the DVD is gone! If he goes to My Computer The drive letter is gone also. One possible fix is drastic, but may work. This involves editing the registry so be careful and back it up. Then:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11­CE-BFC1-08002BE10318}

1. Click on the start menu.
2. Type in “regedit” without the quotation marks.
3. Maximize the HKLM and then go ahead and browse until you reach the key listed above.
4. In the right panel you’ll see something along the lines of “UpperFilter” and “LowerFilter”. You want to click on each “filter” key and hit delete. Click yes when it asks to confirm if you wish to delete the key.
5. Restart Windows.

The above info was copied and edited from here. Please comment if this worked or not.