CD drive or the DVD drive does not work??? it was there just a minute ago…

One of the most common things that I have found in computers that I look at, is a missing cd/dvd drive. One of the first things I check when seeing if the computer needs new hardware, is to quickly do the steps below. And rule out something that wouldn’t change if I was to just throw in a new drive, and a lot cheaper.

1. Click Start

type regedit in the Start Search box

and then click regedit in the Programs list.

2. Locate, and then click the following registry subkey: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlClass{4D36E965-E325-11CE-BFC1-08002BE10318}

Caution There can be many instances of the registry subkey that is mentioned in step 2. You must make sure that you are in the appropriate registry subkey before modifying the UpperFilters and the LowerFilters values. To verify that you are in the appropriate registry subkey, make sure that the Default data value is DVD/CD-ROM and the Class data value is CDROM.

3. In the right pane, right-click UpperFilters, and then click Delete.

4. Click Yes to confirm the removal of the UpperFilters registry entry.

5. In the right pane, right-click LowerFilters, and then click Delete.

6. Click Yes to confirm the removal of the LowerFilters registry entry.

7. Exit Registry Editor, and then restart the computer.

I have found even if there is only the upper filters showing up, that deleting that entry will most of the time solve the problem of the missing drive.

Note After you remove the UpperFilters registry entry and the LowerFilters registry entry, you may lose functionality in certain programs such as CD recording programs. In this scenario, you must reinstall any affected programs. If the problem recurs, contact the program vendor to determine whether an update is available for the program.

Link to MS Support Article

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