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Windows 7: BSOD occurs randomly during regular usage (web-browsing, e-mail).

03 Nov 2011   #1

Windows 7 Home Premium 64bit
BSOD occurs randomly during regular usage (web-browsing, e-mail).

Hi there,

I am getting random BSODs with my Acer Aspire 8943G laptop. I was wondering if someone can help out and shed some light as to what might be causing it.
I am not doing anything extraordinary with this laptop but use Firefox 7.0.1 for web browsing, Office 2010 with latest updates for e-mail / productivity.
The laptop is running the Win 7 OS that came with it (Home Premium 64bit).
It's an i5-430m, 2.26Ghz per core.
ATI Mobility Radeon HD 5650
8GB of DDR3 ram.

I've been experiencing these type of BSOD pretty much from day one, and they can occur from as often as several times a week to maybe once a month.

Thanks so much,



Is Windows 7 . . .
- x86 (32-bit) or x64 ? x64
- the original installed OS on the system? Yes
- an OEM or full retail version? OEM
- OEM = came pre-installed on system
- Full Retail = you purchased it from retailer

- What is the age of system (hardware)? 1-2 years old
- What is the age of OS installation (have you re-installed the OS?) 1-2 years, original installation

My System SpecsSystem Spec
03 Nov 2011   #2

Windows 10 Pro x64, Arch Linux

Dumps point to netw5s64.sys, Intel Wifi driver
Update it using update utility: Intel® Driver Update Utility or at Acer Support
Acer Europe - Service & Support, Drivers & Utilities, Downloads

*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *

Use !analyze -v to get detailed debugging information.

BugCheck 9F, {3, fffffa8007fdf060, fffff80004610518, fffffa800dfa4380}

*** WARNING: Unable to verify timestamp for NETw5s64.sys
*** ERROR: Module load completed but symbols could not be loaded for NETw5s64.sys
Probably caused by : NETw5s64.sys

A driver is causing an inconsistent power state.
Arg1: 0000000000000003, A device object has been blocking an Irp for too long a time
Arg2: fffffa8007fdf060, Physical Device Object of the stack
Arg3: fffff80004610518, Functional Device Object of the stack
Arg4: fffffa800dfa4380, The blocked IRP

Debugging Details:


IRP_ADDRESS:  fffffa800dfa4380

DEVICE_OBJECT: fffffa800a911050

DRIVER_OBJECT: fffffa800a94f8f0

IMAGE_NAME:  NETw5s64.sys



FAULTING_MODULE: fffff88005844000 NETw5s64






LAST_CONTROL_TRANSFER:  from fffff8000314dcd2 to fffff800030dfc40

fffff800`046104c8 fffff800`0314dcd2 : 00000000`0000009f 00000000`00000003 fffffa80`07fdf060 fffff800`04610518 : nt!KeBugCheckEx
fffff800`046104d0 fffff800`030eb5fc : fffff800`04610630 fffff800`04610630 00000000`00000000 00000000`00000001 : nt! ?? ::FNODOBFM::`string'+0x34a90
fffff800`04610570 fffff800`030eb496 : fffffa80`0a6f8838 fffffa80`0a6f8838 00000000`00000000 00000000`00000000 : nt!KiProcessTimerDpcTable+0x6c
fffff800`046105e0 fffff800`030eb37e : 0000003f`f70f8e9e fffff800`04610c58 00000000`001adf29 fffff800`032587a8 : nt!KiProcessExpiredTimerList+0xc6
fffff800`04610c30 fffff800`030eb167 : 0000000e`1faf33c6 0000000e`001adf29 0000000e`1faf3333 00000000`00000029 : nt!KiTimerExpiration+0x1be
fffff800`04610cd0 fffff800`030d796a : fffff800`03255e80 fffff800`03263cc0 00000000`00000001 fffff880`00000000 : nt!KiRetireDpcList+0x277
fffff800`04610d80 00000000`00000000 : fffff800`04611000 fffff800`0460b000 fffff800`04610d40 00000000`00000000 : nt!KiIdleLoop+0x5a


FOLLOWUP_NAME:  MachineOwner


BUCKET_ID:  X64_0x9F_IMAGE_NETw5s64.sys

Followup: MachineOwner
My System SpecsSystem Spec
03 Nov 2011   #3

Windows 7 Home Premium 64bit

Thanks for your help and support. I have updated the wireless card driver and will monitor my system for a while and see if it makes a difference. :)
My System SpecsSystem Spec

22 Nov 2011   #4

Windows 7 Home Premium 64bit

Thanks so much for your help. I think that updating the Intel WiFi driver definitely did the trick. The system has been stable now for the past few weeks.
My System SpecsSystem Spec

 BSOD occurs randomly during regular usage (web-browsing, e-mail).

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