CD and DVD drives "Device cannot start" error 10 in device manger - Windows

A member of staff brought in their PC today saying that the DVD drives (there are two) don't work.

Looking in Device manager I found that both DVD drives were down as CD drives and in the details it says something along the lines of:
The device cannot start error 10

My first idea was to do with Master and Slave jumper switches on the back of the DVD drives. Tried all the combinations. For some the drives came up as their actual names, but still came up with the error message.

After this I did a system restore to its' earliest point. Still no luck.

I finally thought it had to do with iTunes. I've experienced it before, when installing iTunes the CD drive stops working in Windows. I had a search around on google and found this forum. It seemed promising and pointed towards this Microsoft troubleshooting guide.

Also, another tutorial is here from Apple who admit the problem.

Although this was to do with Windows XP and error 31 I found other forums mentioning the registry and "Upper Filters" and "Lower Filters". I deleted the UpperFilter registry entry mentioned and it worked a treat.

Basically:

1. load up Regedit by going to Start > Run > Regedit
2. go to:
1. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
3. delete the UpperFilter, usually at the bottom
4. Reboot the machine

Done

OS X DVD region code

On new apple macs the dvd region needs to be initialised. This is generally difficult and it would be easier if the user could initialise it without the admin password. This can be done. The information is stored in "/etc/authorization"

Specifically the section corrisponding to:
system.device.dvd.setregion.initial

class
user
comment
Used by the DVD player to set the region code the first time. Note that changing the region code after it has been set requires a different right (system.device.dvd.setregion.change).


Changing the "user' string to "allow" lets the user initialise the dvd region (but not change it thereafter). A little hard to get a script to change this value as it is not a plist file, but you can copy a changed file to other computers through ARD (apple remote desktop).


Found on a forum:
http://forums.macosxhints.com/showthread.php?t=96192