Usually every couple of weeks this machine will BSOD with a DPC_WATCHDOG_VIOLATION on an unknown module.
If I run heavy disk I/O the crash will happen a little more often but even then it could go days just fine.
Most of the time it crashes when I am away and the machine is largely idle.
I struggle to get dumps until I decided to try writing them to a different drive, so I have one now, but the forum tool doesn't look for it in the non-standard location. It's also a full memory dump (8GB). So it's not attached. If someone can help me capture one for the tool let me know!
Basic analysis from WinDbg on the full dump doesn't seem to help to my untrained eye....? Will post that next.
EDIT: Attachment deleted - see newer attachment in later post