http://support.microsoft.com/kb/314060/EN-US/
Step 1: Start Registry Editor
Click
Start, click
Run, type regedit, and then click
OK. Registry Editor starts.
Step 2: Delete the UpperFilters registry entry
1.In Registry Editor, expand
My Computer, and then expand
HKEY_LOCAL_MACHINE.2.Expand
SYSTEM, and then expand
CurrentControlSet.3.Expand
Control, and then expand
Class.4.Under
Class, click
{4D36E965-E325-11CE-BFC1-08002BE10318}.5.In the right pane (topic area), click
UpperFilters.
Note An
UpperFilters.bak registry entry may also appear. To delete the
UpperFilters registry entry, you must click
UpperFilters and not
UpperFilters.bak.6.On the
Edit menu, click
Delete.7.When you receive the following message, click
Yes to confirm the deletion of the UpperFilters registry entry:Are you sure you want to delete this value?
The UpperFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey.
Note Do not exit Registry Editor. You must have this program for the next step.
Step 3: Delete the LowerFilters registry entry
1.In Registry Editor, expand
My Computer, and then expand
HKEY_LOCAL_MACHINE.2.Expand
SYSTEM, and then expand
CurrentControlSet.3.Expand
Control, and then expand
Class.4.Under
Class, click
{4D36E965-E325-11CE-BFC1-08002BE10318}.5.In the right pane (topic area), click
LowerFilters.
Note An
LowerFilters.bak registry entry may also appear. To delete the
LowerFilters registry entry, you must click
LowerFilters and not
LowerFilters.bak.6.On the
Edit menu, click
Delete.7.When you receive the following message, click
Yes to confirm the deletion of the LowerFilters registry entry:Are you sure you want to delete this value?
The LowerFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey.8.Exit Registry Editor.
Step 4: Restart the computer
************if this still doesnt work go to device manager look for the name of the drive then go to google search a firmware update for it. In my case Ill google "HP DVD Writer 640c firmware" download it install then restart.
************if nothing still go to the manufacturers website look for the service manual - look for how to remove the cdrom drive out of the notebook - remove it put it back in then try again.
If this all fails claim for the warranty
****dont even try to do this if the drive is working properly*******