CDRom/CDR dissappeared

[Chaos]

Dunno what happened but one day I restarted and all of a sudden my CDRom and cdr dissapeared. They show up in Device manager containing the error "Your registry might be corrupted. (Code 19)" I have went through the troubleshooter and that did nothing tried different IDE cables uninstalling and reinstalling the Hardware and drivers. Nothing seems to work. They worked up until one day. Only thing I can think of that I did that day was upgrade my Geforce drivers. Any suggestions..

P3 700@805
192megs PC100
Asus V6600 Deluxe
Win2000 Professional
Mitsumi 4801TE 4xCDr
Generic 32x cdrom
2x 4.3 gigs generic HD
On a Asus P3V4X

http://chaosonfire.homestead.com/files/Chaostag45.JPG