I have some additional things for you to check, if memory comes back okay...
As I read your minidump, it is your Windows audio (Kmixer.sys) failing that triggered this BSOD and minidump.
(But, the cause is one layer further back, as Kmixer should be a good / solid file).
I believe that the cause is probably the way your 3rd party programs are interacting with windows and chipset drivers.
Specifically, (having researched Kmixer and Mix Buffers) I believe it is the way your game is interacting with DirectX.
To try to prove this, I would suggest that you try using Driver Verifier.
Howard Hopkinson, one of our past highly respected gurus posted this advice for using it...
To determine what driver is causing the problem I need you to enable driver verifier.
Steps:
1) Windows Key + R
2) Type in ‘verifier’ and hit enter
3) Make sure ‘Create Standard Setting’ is selected and hit next
4) Click on ‘Select all drivers installed on this computer’ and hit Finish
5) Reboot
There is a possibility that your computer will crash on reboot. If this occurs hit F8 when rebooting just before the windows logo screen and select the safe mode boot option. Follow the same steps above but on step 4 choose ‘Select driver names from a list’; hit next; check the box next to any driver where the provider is not Microsoft; hit Finish; reboot.
This will slow the performance of you computer a little while enabled but will hopefully catch the driver causing corruption.
Next time you crash the blue screen will hopefully say something like “DRIVER_VERIFIER_DETECTED_VIOLATION”.
Another option would be to check for updates/patches for your game that might address this issue.
Another option may be to try to use a different version of DirectX when using this game... and see if that resolves the issue.
