Windows 7/8/8.1 cdrom missing from my computer
Published by exdone
Posted on February 23, 2015
Remove the Upperfilters and Lowerfilters values completely from the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
NOTE: If you are getting a code 39 message, it may be that additional third-party filter drivers were added to UpperFilters and LowerFilters values in addition to Adaptec filter drivers. In that case, you may try to remove the non-Adaptec filter drivers first, leaving the Easy Creator filters in place to see if the Code 39 goes away. If you still receive an error code 39, 32, or 31 message, remove the Upperfilters and Lowerfilters values completely in the preceding key.
Restart your computer.
Additional information from Microsoft
To resolve this behavior, follow these steps:
Remove or rename the following files in the C:\Winnt\System32\Drivers folder:
Cdralw2k.sys
Cdr4_2k.sys
Start Registry Editor (Regedt32.exe).
Locate and then remove the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdralw2k
Locate and then remove the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdr4_2k
Locate and then remove the following registry value:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}\LowerFilter
Locate and then remove the following registry value:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}\UpperFilter
Quit Registry Editor.
In the folder where you saved the registry fix file, right-click the file, and then click Merge.
Restart your computer, and then verify that you have access to your CD drives by using a standard audio or data CD.
- An error has occurred, which probably means the feed is down. Try again later.