Hello Chewy! How do I remove the driver: pfc.sys??

[Gary D]

Good evening Chewy

I was doing some "housecleaning" on my computer today and I discovered I had pfc.sys as a lower driver in my system.

My system used to be clean and now I want it back that way.

I google for its removal and I cannot find any answers except to leave it alone as reg entries have to be edited and/or deleted.

Here is devfilter log:

----------------------------------------------------
Filter Driver Load Order     http://www.bustrace.com
----------------------------------------------------

 Upper Device Filter:  redbook
       Device Object:  _NEC DVD_RW ND-3550A
  Lower Class Filter:  Pfc
 Lower Device Filter:  imapi

         Driver Name:  redbook.sys
       File Location:  c:\windows\system32\drivers
    File Description:  Redbook Audio Filter Driver
        File Version:  5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) [5.1.2600.2180]
        Product Name:  Microsoft® Windows® Operating System
     Product Version:  5.1.2600.2180 [5.1.2600.2180]
        Company Name:  Microsoft Corporation

 [B]        Driver Name:  pfc.sys
       File Location:  c:\windows\system32\drivers
    File Description:  Padus(R) ASPI Shell
        File Version:  2, 5, 0, 205 [2.5.0.205]
        Product Name:  Padus(R) ASPI Shell
     Product Version:  2, 5, 0, 205 [2.5.0.205]
        Company Name:  Padus, Inc.[/B]

         Driver Name:  imapi.sys
       File Location:  c:\windows\system32\drivers
    File Description:  IMAPI Kernel Driver
        File Version:  5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) [5.1.2600.2180]
        Product Name:  Microsoft® Windows® Operating System
     Product Version:  5.1.2600.2180 [5.1.2600.2180]
        Company Name:  Microsoft Corporation

I am lost on how to remove it safely (besides a hard core reinstall). The restore feature is no good as the last restore point still shows it in it.

Any ideas or links??

me==>

[Chewy]

missed this one, sorry

http://support.microsoft.com/?scid=kb%3Ben-us%3B314060&x=12&y=13

try this guide

[blutach]

Just remove it from the registry key - I posted that a few days ago.

EDIT: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}

Regards

[Gary D]

BTW: I had to go through about 15 entries before I knew I had the right one.

The regedit entry even had DVD43 listed in it.

Thanks again guys!

Here is the new devfilter log!

----------------------------------------------------
Filter Driver Load Order     http://www.bustrace.com
----------------------------------------------------

 Upper Device Filter:  redbook
       Device Object:  _NEC DVD_RW ND-3550A
 Lower Device Filter:  imapi

         Driver Name:  redbook.sys
       File Location:  c:\windows\system32\drivers
    File Description:  Redbook Audio Filter Driver
        File Version:  5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) [5.1.2600.2180]
        Product Name:  Microsoft® Windows® Operating System
     Product Version:  5.1.2600.2180 [5.1.2600.2180]
        Company Name:  Microsoft Corporation

         Driver Name:  imapi.sys
       File Location:  c:\windows\system32\drivers
    File Description:  IMAPI Kernel Driver
        File Version:  5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) [5.1.2600.2180]
        Product Name:  Microsoft® Windows® Operating System
     Product Version:  5.1.2600.2180 [5.1.2600.2180]
        Company Name:  Microsoft Corporation

[Chewy]

Clean as a new whistle

[codajohn]

Chewy,
Seems like I have the same problem as Gary D.

Upper Class Filter: GEARAspiWDM
Upper Device Filter: redbook
Device Object: BENQ DVD DD DW1650
Lower Class Filter: Pfc
Lower Class Filter: PxHelp20
Lower Device Filter: imapi

Driver Name: gearaspiwdm.sys
File Location: c:\windows\system32\drivers
File Description: CD/DVD Class Filter Driver
File Version: 2.0.6.1 [2.0.6.1]
Product Name: GEAR.wrks
Product Version: 8.xx [2.0.6.1]
Company Name: GEAR Software Inc.

Driver Name: redbook.sys
File Location: c:\windows\system32\drivers
File Description: Redbook Audio Filter Driver
File Version: 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) [5.1.2600.2180]
Product Name: Microsoft® Windows® Operating System
Product Version: 5.1.2600.2180 [5.1.2600.2180]
Company Name: Microsoft Corporation

Driver Name: pfc.sys
File Location: c:\windows\system32\drivers
File Description: Padus(R) ASPI Shell
File Version: 2, 5, 0, 204 [2.5.0.204]
Product Name: Padus(R) ASPI Shell
Product Version: 2, 5, 0, 204 [2.5.0.204]
Company Name: Padus, Inc.

Driver Name: pxhelp20.sys
File Location: c:\windows\system32\drivers
File Description: Px Engine Device Driver for Windows 2000/XP
File Version: 3.00.33a [3.0.33.0]
Product Name: PxHelp20
Product Version: [2.0.0.0]
Company Name: Sonic Solutions

Driver Name: imapi.sys
File Location: c:\windows\system32\drivers
File Description: IMAPI Kernel Driver
File Version: 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) [5.1.2600.2180]
Product Name: Microsoft® Windows® Operating System
Product Version: 5.1.2600.2180 [5.1.2600.2180]
Company Name: Microsoft Corporation

Following your advice, I noticed that the Registry Key (right side window LowerFilters) has both PxHelp20 (Sonic) and Pfc listed. Should I delete just the Pfc entry? Or both?
Thanks.

[Chewy]

why not give imgburn/tool a try

registry edits are dangerous

[codajohn]

Chewy,
That's certainly a lot easier. Should I still delete both Pfc and/or PxHelp20?
By the way, how did Pfc driver get onto my system? I'm pretty sure it wasn't there when I installed the drive.

Thanks

[Chewy]

sonic/recordnow/or one of their many drones

[codajohn]

As always, Thanks Chewy!