How to: Windows 8.1 CD Drive, DVD Drive not visible in File Manager.
Issue:
After installing Windows 8.0, Windows 8.1, the CD/DVD drive does not appear in My Computer, FileManager, Windows Explorer or in the Control Panel under devices. CD or DVD drive is missing or not recognized by Windows or other programs. ...and yet the CD worked during the install.
Other Symptoms:
Error: The device is not working properly because Windows cannot load the drivers required for this device (Code 31).
Error: A driver for this device was not required, and has been disabled (Code 32 or Code 31).
Error: Code 19, Code 39, "Windows successfully loaded the device driver for this hardware but cannot find the hardware device (Code 41).
Reason:
Unknown. But symptoms appear if you upgrade the Operating System (Windows 8.0 to 8.1); installed a new operating system; possibly un-installed Microsoft Digital Image.
Solution:
Microsoft suggests 5 different solutions, but this is the one that has worked for me on multiple machines.
Synopsis - Add this DWord32 Registry Key and Value:
HKLM\System\CurrentControlSet\Services\atapi\
\Controller0\EnumDevice1 = 1 (Dword32)
1. Confirm you are logged into the Windows Desktop as an Administrator (you cannot be a standard user for these steps).
2. Press Windows Logo Key + R on keyboard.
Type "Regedit" (no quotes); press Enter.
Alternately, from the Windows 8 Start Page, click the background, click the down-arrow-icon on lower-left; type the word "Regedit". Run this program.
3.Tunnel to this registry key:
hkey_local_machine\System\CurrentControlSet\Services\atapi
4. Right-click "atapi",
Select "New, Key"
Type "Controller0" (Controller-zero, no quotes; all one word)
5. On detail side, right-click the new Controller0 key,
Select "New", DWord32
Type "EnumDevice1" (no quotes, no spaces, number-one); press Enter
Right-click EnumDevice1, click Modify
Type 1 (one) in the value box, "Hexidecimal"
6. Close the Registry Editor, Restart the computer
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