Random BSOD

I did the SF Diagnostic Tools It is upload on the top

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033

Additional information about the problem:
BCCode: 1a
BCP1: 0000000000041790
BCP2: FFFFFA8004CFCB60
BCP3: 000000000000FFFF
BCP4: 0000000000000000
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

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Blue Screen of Death (BSOD) Posting Instructions

Your PC appears to be faulting due to an Asus related driver:

Bugcheck:

Code:

PAGE_FAULT_IN_NONPAGED_AREA (50)
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.
Arguments:
Arg1: fffff88009300e00, memory referenced.
Arg2: 0000000000000000, value 0 = read operation, 1 = write operation.
Arg3: fffff880089ba9b4, If non-zero, the instruction address which referenced the bad memory
    address.
Arg4: 0000000000000002, (reserved)

Analysis:

Code:

STACK_TEXT:  
00000000`00000050 fffff880`09300e00 00000000`00000000 fffff880`08c6a980 : nt!KeBugCheckEx
00000000`00000000 fffff880`09300e00 fffffa80`20206f00 fffffa80`08fc7a50 : nt! ?? ::FNODOBFM::`string'+0x43836
00000000`20206f49 00000000`00000001 00000000`00000001 00000000`20206f49 : nt!KiPageFault+0x16e
00000000`00000001 00000000`00000001 00000000`20206f49 00000000`00000000 : IOMap64+0x19b4
00000000`00000001 00000000`20206f49 00000000`00000000 fffff880`089ba641 : 0x20206f49
00000000`20206f49 00000000`00000000 fffff880`089ba641 fffffa80`08e7cb30 : 0x1
00000000`00000000 fffff880`089ba641 fffffa80`08e7cb30 fffff800`02c8bfbc : 0x1
fffff880`089ba641 fffffa80`08e7cb30 fffff800`02c8bfbc ffffffff`ffffffff : 0x20206f49

By looking at the stack IOMap64 is clearly visible, but do you notice the pattern?

Code:

u fffff880`089ba641
IOMap64+0x1641:
fffff880`089ba641 413bc4          cmp     eax,r12d
fffff880`089ba644 0f847efeffff    je      IOMap64+0x14c8 (fffff880`089ba4c8)
fffff880`089ba64a 48c7060c000000  mov     qword ptr [rsi],0Ch
fffff880`089ba651 eb67            jmp     IOMap64+0x16ba (fffff880`089ba6ba)
fffff880`089ba653 443927          cmp     dword ptr [rdi],r12d
fffff880`089ba656 750c            jne     IOMap64+0x1664 (fffff880`089ba664)
fffff880`089ba658 488b05c13a0000  mov     rax,qword ptr [IOMap64+0x5120 (fffff880`089be120)]
fffff880`089ba65f 493bc4          cmp     rax,r12

If we unassemble the program code we can clearly see
that IOMap64 is being called.

Code:

lmvm IOMap64
start             end                 module name
fffff880`089b9000 fffff880`089c2000   IOMap64  T (no symbols)           
    Loaded symbol image file: IOMap64.sys
    Image path: \??\C:\Windows\system32\drivers\IOMap64.sys
    Image name: IOMap64.sys
    Timestamp:        Fri Feb 05 03:55:34 2010 (4B6B7A96)
    CheckSum:         00013681
    ImageSize:        00009000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

By running the lmvm command we can receive more information about the driver. We can see that it is very outdated by looking at it's Timestamp.

• Driver Reference Table - IOMap.sys

Remove all Asus related software and utilities!