I get the error "Windows cannot load the device driver for this hardare. The driver may be corrupted or missing (Code 39)" when I try to use either the internal (factory installed) CD drive (CD-224E) or a brand new Mad Dog USB CD/R/W player with my old DeskPro. I believe I accidentally deleted something I needed to keep when I was cleaning up some old software (uninstalling). Would appreciate any help!

Support Information:
Device Type: CD / DVD
Manufacturer: Compaq
Model: 6450+ SFF EN Deskpro
Interface: Other
Operating System: Windows XP Professional
Age of Device: Not specified
FCCID:

Type of drive: cd-rom (reader only)
Location: internal
What recording software are you using?: Other (Other: not recording)

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=236&qa5=3&qa7=1500&dp=3&qm0=6450%2B++SFF+EN+Deskpro&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=Compaq+CD+%2F+DVD++6450%2B++SFF+EN+Deskpro+Windo ws+XP+Professional+) | Research manufacturer Compaq (http://members.driverguide.com/index.php?action=getinfo&companyid=236)

If problem is non-detection by the os, read on....

Simple solution:

Situation
There is a yellow exclamation mark for CD/DVD drives in Device Manager. The device status in the properties of the driver might indicate an error code, for example 32, 37, or 39.

Solution

To solve the issue, you have to edit the Windows Registry:
Click Start, then Run, type REGEDT32 and click OK.
Locate and then remove the following registry values:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlCl ***{4D36E965-E325-11CE-BFC1-08002BE10318}LowerFilters

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlCl ***{4D36E965-E325-11CE-BFC1-08002BE10318}UpperFilters

http://common.packardbell.com/itemnr/topic_02125/topic_02125.gif

Close Registry Editor.
Reboot the system for the changes to take effect.

Note: Some programs are unable to detect the CD/DVD drive after these steps. To solve this, simply re-install the program in question, eg: usually your recording software. Also, in few instances the order in which the programs are (re-)installed can make a difference.

And here's another mothod that will do this automatically for you if your afraid to edit the registry manually.

http://forums.driverguide.com/showthread.php?t=22131
(automatic fix, post #7, download file: CdGone.zip)