Missing Cd Drive

Windows successfully loaded the device driver for this hardware but cannot find the hardware device. (Code 41)
All of a sudden i have no cd drive can anyone help me solve this problem.
For some reasom devicemanager says i have 2 cd drives

Generic Dvd-rom scsicdrom device
Qsi Cdrw/dvd sbw-242

Dell Latitude D800
pentium M 1.4
1 GB RAM
Windows XP sp 2