Random BSOD over past 6 months. Error 0x000000d1 ntoskrnl.exe+74ec0

Hello all,

Over the past 6 months or so I have been getting random BSODs with no obvious symptoms of what is causing them.

They started happening last September after I got back from the Summer. To begin with I tried to diagnose the problem following various guides to try and work out what could be causing them. I did the following:

• Memtest
• Reg check
• Driver Verifier
• Updated Drivers
• Checked for any physical damage on hardware
• Tried restoring

No matter what I did I could not either fix the problem or find the cause of the problem. The main reason for this was the "ntoskrnl.exe+XXXXX" would appear each time on each crash, and searching online I could not find a definitive reason or answer to the crashes.

So I decided in the meantime to live with the possible chance that I would BSOD every now and then. For the most part this was fine as they became less frequent.

Then came today. I've had 3 BSOD in one day and now its starting to irritate me. Knowing that my previous efforts to try and find a solution were to no results, I just don't know what to do. I'm getting the point that I might just rip out all my hardware and start fresh, but that won't be for another 3 months or so.

So here are the .dmps from September till now. Looking at them in BlueScreenView the Caused Driver and Address are all different, there are some common patterns such as the "Qualcomm Atheros Driver" I did update this but ended up making the problem worse, as it made my Ethernet cut out completely. Therefore I rolled back the driver.

If anyone has any ideas or can diagnose the problem better that would be grand.

My last thoughts are to what the problem might be could be involving my antivirus - BullGuard. To my memory that was the last Program I installed before I went away for the summer. Since switching to BullGuard I have noticed a lot more problems, but that could just be coincidence.
Attachment 351194

Update Atheros LAN driver from http://www.gigabyte.in/products/prod...px?pid=4144#dl

Code:

BugCheck D1, {28, 2, 0, fffff880018fc360}

*** WARNING: Unable to verify timestamp for L1C62x64.sys
*** ERROR: Module load completed but symbols could not be loaded for L1C62x64.sys
Probably caused by : L1C62x64.sys ( L1C62x64+6a5f )

Followup: MachineOwner
---------

Code:

    Image name: L1C62x64.sys
    Timestamp:        Wed Apr 25 10:37:17 2012 (4F978685)

One more thing is there .... Agnitum Firewall. I dont know what is it, but as it is contributing to the BOSDs, it should be uninstalled. Probably it is branded as Outpost.

Code:

fffff880`03319e68  fffff880`04d84738Unable to load image \SystemRoot\system32\DRIVERS\afwcore.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for afwcore.sys
*** ERROR: Module load completed but symbols could not be loaded for afwcore.sys
 afwcore+0x59738

Code:

fffff880`03319d48  fffff880`04d1d000Unable to load image \SystemRoot\system32\DRIVERS\afw.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for afw.sys
*** ERROR: Module load completed but symbols could not be loaded for afw.sys
 afw

Let us know the situation after doing these two.

You may part your job into two parts. First update the driver and see how it works.

If BSODs continue, uninstall BullGuard.