The solution might be in http://www.pchell.com/hardware/cd_drive_error_code_39.shtml
I don't know what happened but I have lost both my CD RW and DVD RW
They are in my Device manager with an exclamation mark
When I open Properties of the Drives I find windows cannot load the Device Driver for this Hardware the Driver maybe corrupted or missing (Code 39)
Tried to uninstall but at first boot my system is trying to reinstall
the Drives without results
I run a 2.8 CPU on a Intel D845 GRG Mother Board with 768 MB MEM.
Windows XP PRO OS.