Bsod - driver_irql_not_less_or_equal

Hello cannedelf, I will try to help you. You only had 2 dump files, but this is what they say.

Code:

 L1C62x64
start             end                 module name
fffff880`0538d000 fffff880`053af000   L1C62x64 T (no symbols)           
    Loaded symbol image file: L1C62x64.sys
    Image path: \SystemRoot\system32\DRIVERS\L1C62x64.sys
    Image name: L1C62x64.sys
    Timestamp:        Tue Jul 16 01:56:44 2013 (51E4EEAC)
    CheckSum:         0002912C
    ImageSize:        00022000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

That is your Atheros NIC driver and as you can see, needs to be updated from your motherboards web site.

Code:

fffff880`03bc43d8  fffff880`01868104Unable to load image \SystemRoot\system32\DRIVERS\NSNetmon.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for NSNetmon.sys
*** ERROR: Module load completed but symbols could not be loaded for NSNetmon.sys

That is NovaShield Kernel Network Module driver Believed to be a part of BullGuard Internet Security
also, probably connected to that is

Code:

Use !analyze -v to get detailed debugging information.
BugCheck D1, {0, 2, 0, fffff880053a0c9b}
*** WARNING: Unable to verify timestamp for L1C62x64.sys
*** ERROR: Module load completed but symbols could not be loaded for L1C62x64.sys
*** WARNING: Unable to verify timestamp for afwcore.sys
*** ERROR: Module load completed but symbols could not be loaded for afwcore.sys
Probably caused by : L1C62x64.sys ( L1C62x64+6c9b )
 
That is your Agnitum Firewall Driver 
Followup: MachineOwner

I would uninstall Bullguard and the Firewall program if they are not connected and replace them with
Microsoft Security Essentials (Microsoft Security Essentials - Microsoft Windows)
And use Windows Firewall. Try those and see if your results are not improved.