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Hi ,

I am experiencing continuous blue screen error in Lenovo T430 Laptop.I have attached the Minidumb error.

I have uninstalled and reinstalled all the drivers.
OS - Win7 64 Bit
RAM- 8 GB


All your help is much appreciated to rectify the root cause.

Thanks
Dhaneesh
 

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TSF Team, Emeritus
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Hi Dhaneesh,

All of the attached DMP files are of the SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M (1000007e) bug check.

This indicates that a system thread generated an exception which the error handler did not catch.

BugCheck 1000007E, {ffffffffc0000005, fffff880048e4800, fffff88004362148, fffff880043619a0}

^^ The 1st parameter is 0xc0000005 which indicates an access violation occurred:

Code:
2: kd> .exr 0xfffff88004362148
ExceptionAddress: fffff880048e4800 ([COLOR=Red]afd!AfdCheckAndReferenceEndpoint[/COLOR]+0x0000000000000002)
   ExceptionCode: [COLOR=Red]c0000005 (Access violation)[/COLOR]
^^ The violation occurred in afd!AfdCheckAndReferenceEndpoint. Great, so what caused it?

Let's take a look at the call stack:

Code:
2: kd> kv
Child-SP          RetAddr           : Args to Child                                                           : Call Site
fffff880`04362388 fffff880`04948883 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : [COLOR=Red]afd!AfdCheckAndReferenceEndpoint+0x2[/COLOR]
fffff880`04362390 fffff880`0a4025e1 : 00000000`00000028 504e474e`0681111b 00000000`00000000 fffff880`043624a0 : [COLOR=Red]afd!AfdReceiveDatagramEventHandler+0x53[/COLOR]
fffff880`04362480 00000000`00000028 : 504e474e`0681111b 00000000`00000000 fffff880`043624a0 00000000`00000000 : [COLOR=Indigo]ngfilter+0x25e1[/COLOR]
fffff880`04362488 504e474e`0681111b : 00000000`00000000 fffff880`043624a0 00000000`00000000 fffffa80`00000200 : 0x28
fffff880`04362490 00000000`00000000 : fffff880`043624a0 00000000`00000000 fffffa80`00000200 fffffa80`00000028 : 0x504e474e`0681111b
^^ ngfilter.sys caused it, which is the Event Logging driver from Aventail Corporation's Smart Tunneling software.

Uninstall it ASAP.

Regards,

Patrick
 
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