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Windows 7: Windows 7 crashed with BSOD

08 Oct 2010   #1

Windows 7 Home 64bit
Windows 7 crashed with BSOD

Is Windows 7 . . .
- 64bit original and only OS installed on system
- an OEM version
- I build the system no more than one month ago
- I installed the OS around the same time.

My System SpecsSystem Spec
08 Oct 2010   #2

Win 8 Release candidate 8400

Quote   Quote: Originally Posted by Penncrow19 View Post
Is Windows 7 . . .
- 64bit original and only OS installed on system
- an OEM version
- I build the system no more than one month ago
- I installed the OS around the same time.
These may have been caused by cng.sys (part of the OS). The same file name has also been used by a few virus variants. You should do a complete virus scan with an updated AV program.

You should also run system file check to verify and repair your system files.

SFC /SCANNOW Command - System File Checker

Let us know if you need assistance

Ken J

Microsoft (R) Windows Debugger Version 6.11.0001.404 X86
Copyright (c) Microsoft Corporation. All rights reserved.

Loading Dump File [C:\Users\K\Desktop\Windows_NT6_BSOD_jcgriff2\100210-15818-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Symbol search path is: SRV*C:\symbols;*;srv*e:\symbols
Executable search path is: 
Windows 7 Kernel Version 7600 MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 7600.16617.amd64fre.win7_gdr.100618-1621
Machine Name:
Kernel base = 0xfffff800`02c49000 PsLoadedModuleList = 0xfffff800`02e86e50
Debug session time: Sat Oct  2 02:54:54.896 2010 (GMT-4)
System Uptime: 0 days 0:18:10.004
Loading Kernel Symbols
Loading User Symbols
Loading unloaded module list
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Use !analyze -v to get detailed debugging information.

BugCheck 50, {fffff80402e34760, 0, fffff80002c67b6c, 5}

Could not read faulting driver name
Probably caused by : cng.sys ( cng!GatherRandomKey+294 )

Followup: MachineOwner

3: kd> !analyze -v
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Invalid system memory was referenced.  This cannot be protected by try-except,
it must be protected by a Probe.  Typically the address is just plain bad or it
is pointing at freed memory.
Arg1: fffff80402e34760, memory referenced.
Arg2: 0000000000000000, value 0 = read operation, 1 = write operation.
Arg3: fffff80002c67b6c, If non-zero, the instruction address which referenced the bad memory
Arg4: 0000000000000005, (reserved)

Debugging Details:

Could not read faulting driver name

READ_ADDRESS: GetPointerFromAddress: unable to read from fffff80002ef10e0

fffff800`02c67b6c 0fb742c0        movzx   eax,word ptr [rdx-40h]







TRAP_FRAME:  fffff880031af080 -- (.trap 0xfffff880031af080)
NOTE: The trap frame does not contain all registers.
Some register values may be zeroed or incorrect.
rax=0000000000000010 rbx=0000000000000000 rcx=fffff8800e1511b0
rdx=fffff80402e347a0 rsi=0000000000000000 rdi=0000000000000000
rip=fffff80002c67b6c rsp=fffff880031af210 rbp=0000000000000002
 r8=fffff80002e5e720  r9=0000000000000000 r10=0000000000000000
r11=0000fffffffff000 r12=0000000000000000 r13=0000000000000000
r14=0000000000000000 r15=0000000000000000
iopl=0         nv up ei pl nz na pe nc
fffff800`02c67b6c 0fb742c0        movzx   eax,word ptr [rdx-40h] ds:8010:fffff804`02e34760=????
Resetting default scope

LAST_CONTROL_TRANSFER:  from fffff80002d388c1 to fffff80002cb9740

fffff880`031aef18 fffff800`02d388c1 : 00000000`00000050 fffff804`02e34760 00000000`00000000 fffff880`031af080 : nt!KeBugCheckEx
fffff880`031aef20 fffff800`02cb782e : 00000000`00000000 00000000`00000ff4 00000000`00000000 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x40e8b
fffff880`031af080 fffff800`02c67b6c : 00000000`00000ff4 00000000`00000000 fffff8a0`0248b170 fffff880`031af2e0 : nt!KiPageFault+0x16e
fffff880`031af210 fffff800`02fb77bb : 00000000`00000000 fffff800`00000ff4 fffff880`031af2e0 00000000`00000000 : nt!ExpGetLookasideInformation+0x8c
fffff880`031af2a0 fffff800`02fb81e5 : fffff8a0`0248b170 00000000`00000000 00000000`00000004 00000000`00000000 : nt!ExpQuerySystemInformation+0x15bc
fffff880`031af640 fffff800`02cb8993 : fffff8a0`024a0000 fffff800`02cb793d 00000000`00000041 fffffa80`07818920 : nt!NtQuerySystemInformation+0x4d
fffff880`031af680 fffff800`02cb4f30 : fffff880`0113cb04 00000000`00020000 fffff880`031af844 fffff8a0`0248b148 : nt!KiSystemServiceCopyEnd+0x13
fffff880`031af818 fffff880`0113cb04 : 00000000`00020000 fffff880`031af844 fffff8a0`0248b148 fffffa80`08e34380 : nt!KiServiceLinkage
fffff880`031af820 fffff880`0113c56d : fffffa80`07818920 00000000`00000286 fffff880`20206f49 00000000`00000018 : cng!GatherRandomKey+0x294
fffff880`031afbe0 fffff800`02fb5c5d : 00000000`00000000 fffff800`02ebeee0 00000000`00000000 fffffa80`06a1d680 : cng!scavengingWorkItemRoutine+0x3d
fffff880`031afc80 fffff800`02cc6961 : fffff800`02fac800 fffff800`02fac8dc fffffa80`06a1d680 00000000`00000000 : nt!IopProcessWorkItem+0x3d
fffff880`031afcb0 fffff800`02f5dc06 : ffb80d89`1b4d060b fffffa80`06a1d680 00000000`00000080 fffffa80`069a79e0 : nt!ExpWorkerThread+0x111
fffff880`031afd40 fffff800`02c97c26 : fffff880`02f64180 fffffa80`06a1d680 fffff880`02f6efc0 12323300`34352622 : nt!PspSystemThreadStartup+0x5a
fffff880`031afd80 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KxStartSystemThread+0x16


fffff880`0113cb04 85c0            test    eax,eax


SYMBOL_NAME:  cng!GatherRandomKey+294

FOLLOWUP_NAME:  MachineOwner


IMAGE_NAME:  cng.sys


FAILURE_BUCKET_ID:  X64_0x50_cng!GatherRandomKey+294

BUCKET_ID:  X64_0x50_cng!GatherRandomKey+294

Followup: MachineOwner
My System SpecsSystem Spec

 Windows 7 crashed with BSOD

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