Archived from groups: microsoft.public.windowsxp.hardware (
More info?)
Hi,
http://aumha.org/win5/a/xpcd.htm
Click the above link and then scroll down to 8. Problems
You can see:
“My CD drives have vanished (from Explorer, Device Manager, etc.)�
This happens quite often if one of the third-party packages has been uninstalled. They add references in the Registry for modules which they use, and these references fail to be removed, leaving Windows unable to find the files apparently needed for CD devices at the next boot. There is a simple Registry patch to correct this (download it here). Before using the patch, be sure to back up the Registry. After using the patch and rebooting, the drives should reappear. Any third party package that is still required will then need to be re-installed.
This problem also may arise if there is underlying trouble with the Input-Output system of the machine: for example, interactions with controllers like Promise or Highpoint, or with special drivers. It may be worth trying a change in the DMA settings for the device in Control Panel | System | Hardware | Device Manager. Under IDE controllers, double click on the Primary or Secondary IDE Channel concerned, then click the tab for the Advanced Settings page.
***click from ***There is a simple Registry patch to correct this (download it here)**
Click the here (underlined in blue color) and save it to a specific folder(do not save it to desktop). Close all other applications and then run the downloaded patch by opening the specific folder and double click the exe file. You may receive warning messages from your antivirus application, just neglect the warning and go ahead.
NOTE: backup the registry before running this patch for just in case.
Start/run/regedit/HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
Right click on the key and click "EXPORT" then save it to My Document folder.
You can delete this file if the patch has fixed the problems.
If anything happened after applied the patch, you can IMPORT back the backuped reg file.
However, it is much better to backup the whole registries, just run regedit and right click on the HKEY_LOCAL_MACHINE and the click EXPORT and then save it to My Doc. It will take longer time and the file is much bigger than just backup the DVD/CD rom registry.
My address mokpetc(nospam)@yahoo.com.hk **remove (nospam) for email
Peter
----- Bryan wrote: -----
Thanks Peter but I don't see the registry patch, what is it called and where on the page is it. thanks again.