From your .dmp:
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
BUGCHECK_STR: 0x3B
CURRENT_IRQL: 0
LAST_CONTROL_TRANSFER: from 0000000000000000 to fffff960000970af
STACK_TEXT:
fffff880`0e79e880 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : win32k+0x470af
FOLLOWUP_IP:
win32k+470af
fffff960`000970af ff4308 inc dword ptr [rbx+8]
SYMBOL_STACK_INDEX: 0
SYMBOL_NAME: win32k+470af
FOLLOWUP_NAME: MachineOwner
IMAGE_NAME: win32k.sys
Check to see if the latter file is current maybe or has any hits anywhere?
Google has a lot with these keywords: "win32k.sys" "vista"
Good luck...