I am having problems with a Dell Optiplex gx270 computer's internal DVD/CDRW Combo - H.L Data Storage - GCC-4241N. Under My Computer, only one drive is listed and thats the HDD. The device manager doesn't show any optical drives installed either. Tried installing the device through Add/Remove HARDWARE without success. In the BIOS it says that no cd-drive is installed. I took it apart and checked all the connections and they were all secure. Still it wasn't recognized in the BIOS. There was never a floppy drive installed whatsoever on this computer also. So I can't do anything more with this, any suggestions would be greatly appreciated. THANKS, NEILIf you checked all the cables , drivers , add and remove hardware then I would say it is a bad disc-drive.Hi Neil.

I agree with wrwss.  Either the DVD/CD-RW drive may be bad or the controller chip on the motherboard might be shot.  If the BIOS hasn't detected it, chances are good that the OS won't either.  

One question: Has the BIOS ever detected this DVD/CD-RW drive before?

Three things you may try:

• Check the BIOS settings to see if it is set to ENABLE plug-n-play & to auto-detect new drives.

• Remove the DVD/CD-RW drive & connect a different ATAPI device (e.g. a CD-ROM drive that you know is working) to the same cable to see if the BIOS detects it OK.  If it does, then you know the motherboard is probably OK.
  

• Remove the DVD/CD-RW drive from your PC & install it in another PC to see if the BIOS detects it in that machine.  If it does not, chances are it is shot.