I don't have access to any of my optical drives or card reader. The computer sees them, but when I try to access them an "Access Denied" error is returned. I have tried uninstalling the drives, and uninstalling the IDE controller but no joy. Even an external USB DVD drive returns the same error. I also used the system restore to load a fresh copy of Windows, still no joy. Recently I changed my AV to Avira from AVG. It picked up a trojan, which I had it delete: The report; "Virus or unwanted program 'TR/Spy.Banker.vk.1 [trojan]' detected in file 'C:\Documents and Settings\Owner\Local Settings\Application Data\Mozilla\Firefox\Profiles\ecr06y05.default\Cache\C6E618CEd01. Action performed: Delete file" The closest thing I've been able to Google about the problem is this thread at cdfreaks.com : http://club.cdfreaks.com/f61/lightscribe-not-being-recognized-155950/ Here's part of the suggested solution: Originally Posted by Djolondoro Hi, here a reply from The Netherlands in Europe. I had the same problem with Lightscribe, but I have the answer. First you have to go to the Event Viewer. In the Application Log you see the following error of LightSrcibe Service: Win32 Error : Function: [HurricaneClientProxy::OpenCDROMDevice] Error opening class device \\.\CDROM0 returned Win32 Error: 5 Description: Access is denied. You can solve this problem as follows: Choose Start > Run. Type "regedit" in the Open text box and then click OK. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\allocatecdroms Change the valuation of 1 in 0 That's it and LightScribe will work! I've gone into regedit and followed this tree BUT, the value "allocatecdroms" is completely missing. All the drives and reader are visible in "my computer", and I was able to boot an Ubuntu live session last night. So the problem is in the OS or other program. Suggestions?