Constant, abrupt reboots or BSOD (sometimes due to nwifi.sys)

I had my Win8 machine a few months, and have had trouble with reboots or BSOD - almost always when it is on the home wifi network (one at work etc works well, so far). I downloaded the minidump and https://skydrive.live.com/redir?resid=AFD30DDA4322C97F information system files! 4976 & authkey =! AK8_wCSh0hJ4_6E

The clues and help would be appreciated!
Thanks in advance,
s

Hello

All attached files of the DMP are the error checking DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1) .

A kernel mode driver attempted to access pageable memory with an IRQL (Interrupt Request level) that was too high.

Usual causes are a device driver has a bug and tried to access invalid memory, the swap file is damaged or there is a memory problem.

nwifi.sys is always the culprit (NativeWiFi Miniport driver). It is not the real cause and something else crashes, maybe another 3rd party antivirus device driver / firewall causing conflicts. It is usually the two main causes of BSOD network related.

I notice you have Bit Defender installed. I recently went through a BSOD case in which the Bit Defender was causing conflicts on Windows 8 machine. I will recommend that you remove Bit Defender and replace with integrated Windows Defender from Windows 8 for temporary troubleshooting purposes:

Bit - Defender removal tool http://www.BitDefender.com/support/how-to-uninstall-BitDefender-333.html

Kind regards

Patrick

Tags: Windows

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    crash dump file: C:\Windows\Minidump\062813-5750-01.dmp
    This was probably caused by the following module: atikmpag.sys (atikmpag + 0xACF0)
    Bug check code: 0 x 116 (0xFFFFFA80103D24D0, 0xFFFFF88003F5FCF0, 0x0, 0xD)
    Error: VIDEO_TDR_ERROR
    file path: C:\Windows\system32\drivers\atikmpag.sys

    product: AMD driver
    company: Advanced Micro Devices, Inc..
    Description: multi-vendor AMD driver miniport
    Bug control description: This indicates that an attempt to reset display driver and recover a timeout failed.
    A third-party driver has been identified as the likely cause of the system error. It is suggested that you search for an update the following driver: atikmpag.sys (AMD several suppliers Miniport Driver, Advanced Micro Devices, Inc.).
    Google search: Advanced Micro Devices, Inc. VIDEO_TDR_ERROR

    11:57:07 AM GMT on Saturday, June 15, 2013 crashed your computer
    crash dump file: C:\Windows\Minidump\061513-8296-01.dmp
    This was probably caused by the following module: atikmpag.sys (atikmpag + 0xACF0)
    Bug check code: 0 x 116 (0xFFFFFA800D3AF4D0, 0xFFFFF8800421CCF0, 0x0, 0xD)
    Error: VIDEO_TDR_ERROR
    file path: C:\Windows\system32\drivers\atikmpag.sys
    product: AMD driver
    company: Advanced Micro Devices, Inc..
    Description: multi-vendor AMD driver miniport
    Bug control description: This indicates that an attempt to reset display driver and recover a timeout failed.
    A third-party driver has been identified as the likely cause of the system error. It is suggested that you search for an update the following driver: atikmpag.sys (AMD several suppliers Miniport Driver, Advanced Micro Devices, Inc.).
    Google search: Advanced Micro Devices, Inc. VIDEO_TDR_ERROR

    Friday, June 14, 2013 2:42:51 AM GMT crashed your computer
    crash dump file: C:\Windows\Minidump\061313-5468-01.dmp
    This was probably caused by the following module: ntoskrnl.exe (nt + 0x7B040)
    Verification of error code: 0 x 50 (0x0, 0xFFFFF80331E5CE84, 0xFFFFF69000353D38, 0 x 2)
    Error: PAGE_FAULT_IN_NONPAGED_AREA
    file path: C:\Windows\system32\ntoskrnl.exe
    product: Microsoft® Windows® Operating System
    company: Microsoft Corporation
    Description: NT Kernel System &
    Bug control description: This indicates that invalid system memory was referenced.
    This seems to be a typical software driver bug and is not likely to be caused by a hardware problem.
    The accident took place in the Windows kernel. Maybe this problem is caused by another driver who cannot be identified at this time.

    I tried the update driver ATI Mobility HD 4300/4500 Windows 8.1 from amd.com but returned crashes. The graphics hardware is old (1/2009) then I disabled the driver from AMD and graphics card uses at least fonts but same resolution with the standard graphics driver not one built for the hardware that is causing all the problems.

    The flicker of the graphics before the accident, said the card cannot handle the high rate of resolution or refresh in the driver crashing in my opinion. This has been ongoing for about 2 or 3 weeks. It's like the laptop is dying. He is 5 years old.

    Try to disable the card manufacturer video driver that is causing problems and live with less fancy accident-free driver from Microsoft.

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