Computer does not recognize CD/DVD drive

Computer does not recognize CD/DVD drive

1. Boot up the PC and check the BIOS setup and see if the drive is being recognized.....if not, then open it up and check the connections.
2. Go to DEVICE MANAGER and see if its listed there.....if yes, is there a symbol there? click the update driver.....(to get to device manager in WINDOWS XP....Right Click on My Computer- Properties- Hardware or click my computer, then in the left margin click view system info, click hardware, click device manager.....you should see DVD/CD-ROM drives with a plus sign next to it.....click that plus sign to see if the drive is listed, and if there is a symbol)
   
   If updating the driver doesnt work, click to uninstall the drive.....then turn off pc, and turn back on and see if it reloads the drive.....check the device manager again.
3. Still having the problem......find out what drive u have and find a firmware update on this techspots driver section.....try to update firmware. 

          How to update the firmware on any hardware in your computer
          http://www.ehow.com/how_2225435_update-firmware-any-hardware-computer.html

         If  3rd step doesn't work try what worked for my problem....

     4.   We  will open Registry-But Take backup of registry.
               1. Click Start.
               2. Click Run.
               3. In the "open" field type REGEDIT
               4. Click OK.
               5. Click "File" in the menu bar.
               6. Click "Export" from the drop down menu this will open a new box.
               7. click the down arrow beside "Save In" and select "Local Disk (c".
               8. In the File Name field type BACKUP.REG.
               9. Verify that under the ?Export Range?, that the radio button is beside "All".
            10. Click Save.
11. Click the plus sign (+) beside HKEY_LOCAL_MACHINE.
12. Click the plus sign (+) beside System.
13. Click the plus sign (+) beside CurrentControlSet.
14. Click the plus sign (+) beside Control.
15. Click the plus sign (+) beside Class.
16. In the left hand window pane click on {4D36E965-E325-11CE-BFC1-08002BE10318} to select that key.
17. In the right hand window pane select the UpperFilters registry key and press the delete key on the keyboard.
18. Confirm with and OK.
19. In the right hand window pane select the LowerFilters registry key and press the delete key ont he keyboard.
20. Confirm with and OK.
21. Click the "X" in the upper right hand corner of the Registry Editor window to close it.


NOTE: Don't forget to take backup of registry before you make any changes to it. This tricks really works.