Solved: CD & DVD drives not working ... cannot remove drivers

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firedart

Thread Starter
Joined
Apr 1, 2002
Messages
17
Think I need to completely remove the CD Rom drivers from my system but do not know where or how to locate them ....

History:
  • Whilst investigating another problem I came across an error in Windows Event Viewer related to a system file pfc.sys residing in the Windows/System 32 folder.
  • Online investigation revealed a common problem with this file and the advice given was that it could be safely removed and solve the problem.
  • I moved the file to a Temp folder and rebooted the system only to find that my two internal CD Rom and DVD drives are no longer working.
  • Device Manager is showing all 3 drives with a yellow exclamation mark and reports "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)"
  • I moved the pfc.sys file back to its original location and rebooted the system but the problem still persists.

Steps Taken:
  • Attempted to update the driver software from within Device Manager which reported that "The best driver software fro your device is already installed" and "Window has determined the driver software for your device is up to date".
  • Uninstalled all 3 drives from within Device Manager and shut down the system
  • Removed the power supplies to all 3 drives (effectively removing them from the PC) and rebooted.
  • Checked that they were no longer displayed in Device Manager
  • Ran a system cleanup and registry check using CCleaner and Auslogics Boostspeed and rebooted the system.
  • Shut down the system, re-connected the power supplies to all three drives and rebooted the PC expecting the drives to be discovered as "New Hardware Found" and then new drivers installed but this did not happen.
  • Checked Device Manager which now shows the three drives with driver errors as before. I have no working CD or DVD drives on my system at all.

Any advice as to how I may go about resolving this issue would be appreciated. I believe I have to manually remove the drivers from the system/registry? but I do not know where or how to locate them.

Tech Support Guy System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Ultimate, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz, Intel64 Family 6 Model 23 Stepping 7
Processor Count: 4
RAM: 8190 Mb
Graphics Card: NVIDIA GeForce GT 430, 1024 Mb
Hard Drives: C: Total - 143086 MB, Free - 71025 MB; D: Total - 953866 MB, Free - 118500 MB; E: Total - 953866 MB, Free - 159648 MB;
Motherboard: ASUSTeK Computer INC., P5N-D
Antivirus: Microsoft Security Essentials, Updated and Enabled
 

firedart

Thread Starter
Joined
Apr 1, 2002
Messages
17
Just found a solution, this is what fixed the problem:

Edited the Registry Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}

On your right look for "Lower filters" and delete it
Do same for "Upper filters" and close the window
Restart the computer
Your drivers will be automatically installed
 
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