BSOD after creating DAG

Hi,

since i have created a DAG consisting of 2 Mailbox servers, one of the hosts throws a BSOD every few hours. likely culprit seems to be the Health Monitoring (again, i might add) - analyzing the dump shows this:

CRITICAL_PROCESS_DIED (ef)
        A critical system process died
Arguments:
Arg1: fffffa800708f980, Process object or thread object
Arg2: 0000000000000000, If this is 0, a process died. If this is 1, a thread died.
Arg3: 0000000000000000
Arg4: 0000000000000000

Debugging Details:
------------------

PROCESS_OBJECT: fffffa800708f980

IMAGE_NAME:  wininit.exe

DEBUG_FLR_IMAGE_TIMESTAMP:  0

MODULE_NAME: wininit

FAULTING_MODULE: 0000000000000000

PROCESS_NAME:  MSExchangeHMWo

BUGCHECK_STR:  0xEF_MSExchangeHMWo

DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT

CURRENT_IRQL:  0

MANAGED_STACK: !dumpstack -EE
OS Thread Id: 0x0 (0)
TEB information is not available so a stack size of 0xFFFF is assumed
Current frame:
Child-SP         RetAddr          Caller, Callee

STACK_COMMAND:  kb

FOLLOWUP_NAME:  MachineOwner

FAILURE_BUCKET_ID:  0xEF_MSExchangeHMWo_IMAGE_wininit.exe

BUCKET_ID:  0xEF_MSExchangeHMWo_IMAGE_wininit.exe

Followup: MachineOwner

any idea what to do next? can i disable this service?

thanks!