Windows 7 XPS730 Code 19 Question

Just need someone to hold my hand for a minute.  I have read everything I can find online.  Used Microsoft FixIt but still can't access either of my cd/dvd drives.  I have the common error message that reads  -  configuration information (in the registry) is incomplete or damaged (Code 19).

I saw recommendations to delete the upper and lower filter registery keys and I went into the regedit, followed the below instructions as to the location of these filters.   Found the filters under class but wanted to confirm this is what I'm deleting in Windows 7 before I actually do it.  

Name:  Upper Filter -  Type: Reg_Multi_SZ;  Data:  GEARAspiWDM (or something like that) and the Lower Filter type is the same and the data reads PxHelp20.

I guess the data stream has me confused.   Are these the correct instructions for Windows 7 users?    Thank you.  JIm S.   

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.