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Windows 7: Frequent BSOD crashes

04 Apr 2012   #41
Jonathan_King

Windows 7 Professional x64
 
 

That's the error I'm looking at...any ideas what pfc.sys is being used by?

Quote:
Isn't it past your bedtime in NY?
I've become more of an owl since I left my dairy farming job in January, but I'm headed to bed now.


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04 Apr 2012   #42
zigzag3143

Win 8 Release candidate 8400
 
 

Pfc.sys is a system driver installed along with the drivers for many CD and DVD writers.

It is associated with the Advanced SCSI Programming Interface (ASPI), a standard developed by Adaptec that lets PC software control optical drives.

It was originally developed for SCSI but now is used for other interfaces as well.

Terminating this driver may cause software errors when using your optical device.
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04 Apr 2012   #43
Bob Pickering

windows 7 home premium 64
 
 

Quote   Quote: Originally Posted by zigzag3143 View Post
Pfc.sys is a system driver installed along with the drivers for many CD and DVD writers.

It is associated with the Advanced SCSI Programming Interface (ASPI), a standard developed by Adaptec that lets PC software control optical drives.

It was originally developed for SCSI but now is used for other interfaces as well.

Terminating this driver may cause software errors when using your optical device.
Yes, I had read that somewhere. If it actually is optical drive 2, I am wondering if I should disconnect it for a while and see if I still have a problem. Maybe when it is reinstalled later, any driver problem may no longer exist?

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05 Apr 2012   #44
Bob Pickering

windows 7 home premium 64
 
 

I have tried this to see if it will avoid the problem. Will post again in a while (after Jonathan has had his dairyfarmer's nap).


This error is caused by DEP (Data Execution Prevention). To fix it ...

Right click the My Computer icon, select Properties, in the new dialog, click the Advanced tab, in the Performance group click the Settings button, now click the Data Execution Prevention tab, now select Turn on DEP for all programs and services except those I select:, now click the Add button at the bottom and browse to C:\Windows\SysWow64\drivers\pfc.sys (assuming Windows is installed in the Windows folder on your C: drive) and select Open, ensure there is a tick next to the file you just added in the list, then click Apply. Close all open windows and restart your PC, the problem should now be gone.
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05 Apr 2012   #45
zigzag3143

Win 8 Release candidate 8400
 
 

Do you by chance have Nero? That uses pfc.sys
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05 Apr 2012   #46
Bob Pickering

windows 7 home premium 64
 
 

Quote   Quote: Originally Posted by zigzag3143 View Post
Do you by chance have Nero? That uses pfc.sys
Yes. I have Nero 10. I also have other apps that may use pfc.sys. For example, IMG.BURN, Adobe Audition 1.5, MPEG Video Wizard DVD, ConvertXtoDVD4. Am using ConvertX now. The PC crashed during converting a short time ago in ConvertX. I saw the desktop icons vanish a few seconds earlier. But it seems to be doing OK now after I restarted, having converted the files and has burned result to DVD+RW disk in drive 2. Obviously creating the DEP exception hasn't eradicated problem.
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05 Apr 2012   #47
Bob Pickering

windows 7 home premium 64
 
 

another list of events
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06 Apr 2012   #48
Bob Pickering

windows 7 home premium 64
 
 

Well, it seemed all was going along fine. I programmed some tv to record. Crash, bang! no good. When I came to check well after the scheduled task should have begun, everything had locked up. Screen saver frozen. Did a restart, and saved events viewer. I notice it reported an unexpected shutdown occurred earlier. Interestingly it seems to me that it is reporting a problem with my second optical drive (at position 3). Any suggestions guys? If I am right, should I try to disconnect that drive, maybe even put another one in its place??
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06 Apr 2012   #49
Jonathan_King

Windows 7 Professional x64
 
 

We're not looking at physical problems with the optical drive hardware, but rather an error for a driver that's trying to load. Namely, pfc.sys. Take care of that and we'll go from there.
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06 Apr 2012   #50
Bob Pickering

windows 7 home premium 64
 
 
wrong file uploaded last time

Quote   Quote: Originally Posted by Jonathan_King View Post
We're not looking at physical problems with the optical drive hardware, but rather an error for a driver that's trying to load. Namely, pfc.sys. Take care of that and we'll go from there.
I uploaded an old event file last time. Here is the one I meant to do. I seem to have a ULead driver somewhere in my system, to do with ULead Video Studio SE perhaps. I can find some files/folders carried through from my old PC, but don't know how/if any drivers are involved. Perhaps one of my apps uses ULead? Some I suspect include: Adobe Audition 1.5; Winfast PVR2; AVS Video Editor (and other AVS apps); Nero 10; MPEG Video Wizard DVD; VideoPad Video Editor; Prism Video File Converter; Sony Vegas Movie Studio 9; Handbrake; ConvertX to DVD4. I still have quite a number of the installers in my Downloads, so it would be a relatively easy matter to uninstall some for the time being if you think that might help.
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