Code:
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* Bugcheck Analysis *
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Use !analyze -v to get detailed debugging information.
BugCheck 109, {a3a039d89d40876b, b3b7465eefbe6525, fffff8800172bda0, 1}
*** WARNING: Unable to verify timestamp for win32k.sys
*** ERROR: Module load completed but symbols could not be loaded for win32k.sys
Probably caused by : memory_corruption
Followup: memory_corruption
Hi Shaun,
the majority or the dump files were like the one posted above. This bugcheck can be caused by a drivers especially ones which have been modded and/or faulty memory. The other thing I noticed was the dates. You don't have any dump files for this year and in fact the last one is dated September 2014! So they are quite sparse as you say...
Updates.
Your drivers are a little out of date as is your Bios.
BiosVersion = A11
BiosReleaseDate = 12/30/2011
SystemManufacturer = Dell Inc.
SystemProductName = OptiPlex 990
Please ensure the link below is correct for your machine and then update the bios.
http://www.dell.com/support/home/uk/en/ukbsdt1/product-support/product/optiplex-990/drivers avgmfx64.sys Fri Dec 23 12:08:12 2011: AVG AV known on occasion to cause the odd issue. Uninstall to test and use MSE for the meantime as it's ultra stable:
http://windows.microsoft.com/en-GB/windows/security-essentials-download atikmdag.sys Sat Aug 31 01:02:50 2013: AMD GPU driver. I searched for the driver which suited the HD 6450 as it was specified in the driver section of your system support page. If I'm incorrect then please change the download to suit:
http://support.amd.com/en-us/download/desktop?os=Windows 8.1 - 64 Please run the Intel Driver update utility:
https://downloadcenter.intel.com/default.aspx RTDVHD64.sys Tue Sep 14 04:44:34 2010: Realtek High Definition Audio Function Driver please update:
http://www.realtek.com/downloads/do...=24&Level=4&Conn=3&DownTypeID=3&GetDown=false If after making the above changes you still get the bsod then you need to test your RAM.
Windows does have it's own memory testing app but it can often miss errors and the best app for the job is Memtest86. The latest version of which can be found here:
http://www.memtest.org/ To run Memtest86 you need to either burn a copy of it to disk or use a USB stick. If you look down the page you'll eventually find the latest version and it's associated downloads. If your burning to disk choose the pre-compiled iso zip. If your using a USB method then the corresponding download is the auto installer for a USB stick.
Once you have Memtest86 on the media you selected you'll then need to enter your bios and change the boot order so that the machine will boot from either the disk or stick you have Memtest86 on.
Run the test for at least 12hrs if possible unless it becomes clear that there is a issue. If there is a problem with the RAM you'll see the errors pop up in red so you can't miss them.
Post any new dump files