Windows 7 Ultimate 64 bit - Help with BSOD!!

VPN maybe uninstalled, but the crash dump shows that,  there are still elements of it present. When did you remove, before or after the crash?

Download "autoruns" and use it to locate and disable vnaap.sys, vsdatant.sys and any and all VPN Client/ZoneAlarmrelated driver, after making certain that all Microsoft entries have been hidden, to eliminate the possibility of a mistake.(instructions in the youtube video link below.)

Autoruns for Windows

v13.01

This utility, which has the most comprehensive knowledge of auto-starting locations of any startup monitor, shows you what programs are configured to run during system bootup or login, and shows you the entries in the order Windows processes them. These programs include ones in your startup folder, Run, RunOnce, and other Registry keys. You can configure Autoruns to show other locations, including Explorer shell extensions, toolbars, browser helper objects, Winlogon notifications, auto-start services, and much more. Autoruns goes way beyond the MSConfig utility bundled with Windows Me and XP.Autoruns' Hide Signed Microsoft Entries option helps you to zoom in on third-party auto-starting images that have been added to your system and it has support for looking at the auto-starting images configured for other accounts configured on a system

https://technet.microsoft.com/en-us/sysinternals/bb963902.aspx

How to use Autoruns.

https://www.youtube.com/watch?v=HhtSDsQYi28

Hi XP Rocks,

I ran DV and trufos.sys was the file that threw up the error. On checking, trufos.sys was part of Bitdefender. I have already removed Bitdefender and installed Trend Micro.

The VPN has also been uninstalled.

I am still getting the BSOD errors. I have added the mini dump files on one drive.

http://1drv.ms/1QEv1no

Please advise...

Thank you,

Venu

Please run driver verifier (DV) per the instructions in the link below.

Note: Make sure to read and remember the steps to reset DV in the event of a crash, and post a link to the newly generated crash dump here.

Driver Verifier-- tracking down a mis-behaving driver. Co-Authored by ZigZag3143& JMH3143

http://answers.microsoft.com/en-us/windows/wiki/windows\_other-system/driver-verifier-tracking-down-a-mis-behaving/f5cb4faf-556b-4b6d-95b3-c48669e4c983

ZoneAlarm or VPV Checkpoint is still there! Please remove it as previously suggested.

  Image path: \SystemRoot\system32\DRIVERS\vsdatant.sys

    Image name: vsdatant.sys

    Timestamp:      Mon Aug 13 09:50:44 2012 (50290634)

    CheckSum:         00072108

Hi,

Sorry for responding late - I was out of station for a few days.

I tried uninstalling Bitdefender and replaced with Trend Micro - the number of BSODs reduced (in fact there weren't any till yesterday). However, I encountered another error yesterday.

The mini dump files are saved on onedrive - http://1drv.ms/1zrDwHC

==================================================

Dump File         : 041715-137951-01.dmp

Crash Time        : 4/17/2015 12:23:56 PM

Bug Check String  : PAGE_FAULT_IN_NONPAGED_AREA

Bug Check Code    : 0x00000050

Parameter 1       : fffff8a0`07803430

Parameter 2       : 00000000`00000000

Parameter 3       : fffff800`03810b23

Parameter 4       : 00000000`00000000

Caused By Driver  : ntoskrnl.exe

Caused By Address : ntoskrnl.exe+72a40

File Description  : NT Kernel & System

Product Name      : Microsoft® Windows® Operating System

Company           : Microsoft Corporation

File Version      : 6.1.7601.18798 (win7sp1_gdr.150316-1654)

Processor         : x64

Crash Address     : ntoskrnl.exe+72a40

Stack Address 1   :

Stack Address 2   :

Stack Address 3   :

Computer Name     :

Full Path         : C:\Windows\Minidump\041715-137951-01.dmp

Processors Count  : 8

Major Version     : 15

Minor Version     : 7601

Dump File Size    : 404,960

Dump File Time    : 4/17/2015 12:28:44 PM

==================================================

==================================================

Dump File         : 040915-22136-01.dmp

Crash Time        : 4/9/2015 4:54:36 PM

Bug Check String  : SYSTEM_THREAD_EXCEPTION_NOT_HANDLED

Bug Check Code    : 0x1000007e

Parameter 1       : ffffffff`80000003

Parameter 2       : fffff800`036bbcd0

Parameter 3       : fffff880`045500d8

Parameter 4       : fffff880`0454f930

Caused By Driver  : Wdf01000.sys

Caused By Address : Wdf01000.sys+1630

File Description  : Kernel Mode Driver Framework Runtime

Product Name      : Microsoft® Windows® Operating System

Company           : Microsoft Corporation

File Version      : 1.11.9200.16384 (win8_rtm.120725-1247)

Processor         : x64

Crash Address     : ntoskrnl.exe+6ccd0

Stack Address 1   :

Stack Address 2   :

Stack Address 3   :

Computer Name     :

Full Path         : C:\Windows\Minidump\040915-22136-01.dmp

Processors Count  : 8

Major Version     : 15

Minor Version     : 7601

Dump File Size    : 262,144

Dump File Time    : 4/9/2015 4:56:10 PM

==================================================

==================================================

Dump File         : 040915-122117-01.dmp

Crash Time        : 4/9/2015 8:31:28 AM

Bug Check String  : DRIVER_VERIFIER_IOMANAGER_VIOLATION

Bug Check Code    : 0x000000c9

Parameter 1       : 00000000`00000226

Parameter 2       : fffff880`066e7410

Parameter 3       : fffff980`4517a990

Parameter 4       : 00000000`00000000

Caused By Driver  : trufos.sys

Caused By Address : trufos.sys+2410

File Description  :

Product Name      :

Company           :

File Version      :

Processor         : x64

Crash Address     : ntoskrnl.exe+74ec0

Stack Address 1   :

Stack Address 2   :

Stack Address 3   :

Computer Name     :

Full Path         : C:\Windows\Minidump\040915-122117-01.dmp

Processors Count  : 8

Major Version     : 15

Minor Version     : 7601

Dump File Size    : 262,144

Dump File Time    : 4/9/2015 4:46:55 PM

==================================================

==================================================

Dump File         : 040915-32947-01.dmp

Crash Time        : 4/9/2015 12:55:33 AM

Bug Check String  : DRIVER_PAGE_FAULT_IN_FREED_SPECIAL_POOL

Bug Check Code    : 0x000000d5

Parameter 1       : fffff980`31ffef34

Parameter 2       : 00000000`00000000

Parameter 3       : fffff880`013cc2d8

Parameter 4       : 00000000`00000000

Caused By Driver  : ntoskrnl.exe

Caused By Address : ntoskrnl.exe+74ec0

File Description  : NT Kernel & System

Product Name      : Microsoft® Windows® Operating System

Company           : Microsoft Corporation

File Version      : 6.1.7601.18798 (win7sp1_gdr.150316-1654)

Processor         : x64

Crash Address     : ntoskrnl.exe+74ec0

Stack Address 1   :

Stack Address 2   :

Stack Address 3   :

Computer Name     :

Full Path         : C:\Windows\Minidump\040915-32947-01.dmp

Processors Count  : 8

Major Version     : 15

Minor Version     : 7601

Dump File Size    : 262,144

Dump File Time    : 4/9/2015 8:20:42 AM

==================================================

Thank you,

Venu