I searched through every help database and tried everything, but nothing seemed to work for me. I ended up solving my own problem though through a combination of several suggested solutions. I was all set to load a CD into one of my two CD/DVD disk drives on my Windows XP desktop, when, like so many others, I got the "Error Code 19" message saying my CD drives didn't work because the registry was corrupted. The first thing you may want to do is to do a System Restore back to a date before the problem started. When your computer restarts and restores (hopefully, because my first attempt failed, but the second attempt succeeded) and you log-in, do the following: My solution was to first run devmgmt.msc and I noticed my Secondary IDE Channel had an error. I uninstalled it and then "scanned for hardware changes", which reinstalled it and made it work again. Then my two CD drives showed up with Error Code 19. So I then did the following: run regedit and navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318} and to delete "UpperFilter" and "LowerFilter". While this works for many people, I didn't have these Filters, so I tried the next solution. I stayed in Registry Editor (regedit) and click the minus sign next to "Control" under "CurrentControlSet". I then opened "Enum" and opened its subfolder "IDE". I then opened each "CdRom..." folder and clicked on each subfolder, looking for "UpperFilter" and/or "LowerFilter". I found "LowerFilter" in one of the subfolders in each "CdRom..." folder and deleted them. I then went back to Device Manager (run: devmgmt.msc). I clicked each drive and disabled them. I then clicked each drive and enabled them. This completely solved the issue for me. I hope this helps anyone/everyone who could not find a working solution anywhere else! If not, keep searching. You'll find it eventually. Keep searching for a solution online until you find one or get too frustrated and have to call "Software Support" for your computer, which usually costs money (around US $70 on average).

... it would of been better if you posted the thread topic as a more relevant subject than "How to fix" ... searching for help string ... other than that fine! . . ... Posting is provided "AS IS" with no warranties http://img515.imageshack.us/img515/... Grrrr... ....more