Windows 7: Need helps for BSOD!

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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.

BugCheck A, {843fffe4, 2, 1, 830d8dab}

Probably caused by : memory_corruption ( nt!MiInsertPageInFreeOrZeroedList+238 )

Followup: MachineOwner
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1: kd> !analyze -v
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*                        Bugcheck Analysis                                    *
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IRQL_NOT_LESS_OR_EQUAL (a)
An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high.  This is usually
caused by drivers using improper addresses.
If a kernel debugger is available get the stack backtrace.
Arguments:
Arg1: 843fffe4, memory referenced
Arg2: 00000002, IRQL
Arg3: 00000001, bitfield :
    bit 0 : value 0 = read operation, 1 = write operation
    bit 3 : value 0 = not an execute operation, 1 = execute operation (only on chips which support this level of status)
Arg4: 830d8dab, address which referenced memory

Debugging Details:
------------------


WRITE_ADDRESS: GetPointerFromAddress: unable to read from 831a4848
Unable to read MiSystemVaType memory at 83183e20
 843fffe4 

CURRENT_IRQL:  2

FAULTING_IP: 
nt!MiInsertPageInFreeOrZeroedList+238
830d8dab 8901            mov     dword ptr [ecx],eax

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT

BUGCHECK_STR:  0xA

PROCESS_NAME:  avgrsx.exe

TRAP_FRAME:  a297b98c -- (.trap 0xffffffffa297b98c)
ErrCode = 00000002
eax=0007d163 ebx=0000001c ecx=843fffe4 edx=00000000 esi=851ae6d4 edi=85ac0bfc
eip=830d8dab esp=a297ba00 ebp=a297ba28 iopl=0         nv up ei ng nz na pe cy
cs=0008  ss=0010  ds=0023  es=0023  fs=0030  gs=0000             efl=00010287
nt!MiInsertPageInFreeOrZeroedList+0x238:
830d8dab 8901            mov     dword ptr [ecx],eax  ds:0023:843fffe4=????????
Resetting default scope

LAST_CONTROL_TRANSFER:  from 830d8dab to 8307c65b

STACK_TEXT:  
a297b98c 830d8dab badb0d00 00000000 a297bb18 nt!KiTrap0E+0x2cf
a297ba28 830ce5dd 851ae6d4 84a38100 851ae6dc nt!MiInsertPageInFreeOrZeroedList+0x238
a297ba68 830dbdf6 c003cf08 a297bbf0 07950000 nt!MiPfnShareCountIsZero+0x18c
a297bb7c 830dac61 c003cdb8 c003cf00 882d5760 nt!MiDeletePteRun+0x403
a297bc84 830f5a8a 07950000 079e0fff 933f8bf0 nt!MiDeleteVirtualAddresses+0x3c1
a297bd1c 8307927a ffffffff 0774f77c 0774f778 nt!NtFreeVirtualMemory+0x60b
a297bd1c 776a7094 ffffffff 0774f77c 0774f778 nt!KiFastCallEntry+0x12a
WARNING: Frame IP not in any known module. Following frames may be wrong.
0774f6b0 00000000 00000000 00000000 00000000 0x776a7094


STACK_COMMAND:  kb

FOLLOWUP_IP: 
nt!MiInsertPageInFreeOrZeroedList+238
830d8dab 8901            mov     dword ptr [ecx],eax

SYMBOL_STACK_INDEX:  1

SYMBOL_NAME:  nt!MiInsertPageInFreeOrZeroedList+238

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

DEBUG_FLR_IMAGE_TIMESTAMP:  4f766ae5

IMAGE_NAME:  memory_corruption

FAILURE_BUCKET_ID:  0xA_nt!MiInsertPageInFreeOrZeroedList+238

BUCKET_ID:  0xA_nt!MiInsertPageInFreeOrZeroedList+238

Followup: MachineOwner
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