Cognoscis

A fe days back I faced a strange problem, suddenly my CD/DVD drive disappeared. Everytime I rebooted the system, the “new hardware found” dialogue box would appear and fail to find any drivers for my CD/DVD drive. I tried to uninstall it from device manager and reboot the system, but that didnt work. A yellow exclaimation mark appeared on the CD/DVD drive in the device manager. So, this is the solution that worked for me

1) Close all open programs to avoid any intervention

2) Click on Start, Run, and type “regedit” (without the quotes) and press Enter

3) Go to HKEY_LOCAL_MACHINE >> SYSTEM >> CurrentControlSet >> Control >> Class >> {4D36E965-E325-11CE-BFC1-08002BE10318} – Usually this is the first one in the 4D series

4) This folder is the DVD/CD-ROM Drive Class Description in the registry. Look for any of the following names in the right hand column.

• UpperFilters
  

• LowerFilters
  

• UpperFilters.bak
  

• LowerFilters.bak
  

5) If  any of the above keys shown in step 4 are listed, right-click on them and choose Delete

6) After deleting the keys, close the Registry Editor

7) Reboot your computer

Open My Computer and check to see if your CD or DVD drives have returned. You may also want to open Device        Manager and verify that the yellow exclamation and error code on the CD or DVD drive is gone.

 

Hope this solves the probelm