Server 2012 R2. Two BSOD crashes in past month. Need help determining cause.

[Brad2600]

************* Path validation summary **************
Response Time (ms) Location
Deferred SRV*C:\Windows\symbol_cache*Symbol information

Microsoft (R) Windows Debugger Version 10.0.18362.1 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.


Loading Dump File [C:\Windows\Minidump\091819-137000-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available

Error: Change all symbol paths attempts to access 'C:\ProgramData\Opto 22\PAC Project\PDB\' failed: 0x2 - The system cannot find the file specified.

************* Path validation summary **************
Response Time (ms) Location
Deferred SRV*C:\Windows\symbol_cache*Symbol information
Error C:\ProgramData\Opto 22\PAC Project\PDB\
Symbol search path is: SRV*C:\Windows\symbol_cache*http://msdl.microsoft.com/download/symbols;C:\ProgramData\Opto 22\PAC Project\PDB\
Executable search path is:
Windows 8.1 Kernel Version 9600 MP (40 procs) Free x64
Product: Server, suite: TerminalServer SingleUserTS
Built by: 9600.19464.amd64fre.winblue_ltsb_escrow.190828-1437
Machine Name:
Kernel base = 0xfffff800`4ce18000 PsLoadedModuleList = 0xfffff800`4d0dc670
Debug session time: Wed Sep 18 14:27:24.628 2019 (UTC - 4:00)
System Uptime: 0 days 8:27:44.825
Loading Kernel Symbols
...............................................................
................................................................
......................................
Loading User Symbols
Loading unloaded module list
..................
For analysis of this file, run !analyze -v
0: kd> !analyze -v
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************

HYPERVISOR_ERROR (20001)
The hypervisor has encountered a fatal error.
Arguments:
Arg1: 0000000000000011
Arg2: 0000000000263077
Arg3: 0000000000001007
Arg4: ffffe80005646eb0

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

GetUlongPtrFromAddress: unable to read from fffff8004d166308

KEY_VALUES_STRING: 1


PROCESSES_ANALYSIS: 1

SERVICE_ANALYSIS: 1

STACKHASH_ANALYSIS: 1

TIMELINE_ANALYSIS: 1


DUMP_CLASS: 1

DUMP_QUALIFIER: 400

BUILD_VERSION_STRING: 9600.19464.amd64fre.winblue_ltsb_escrow.190828-1437

SYSTEM_MANUFACTURER: Supermicro

SYSTEM_PRODUCT_NAME: SYS-2028R-C1R

SYSTEM_SKU: 085915D9

SYSTEM_VERSION: 123456789

BIOS_VENDOR: American Megatrends Inc.

BIOS_VERSION: 2.0

BIOS_DATE: 12/17/2015

BASEBOARD_MANUFACTURER: Supermicro

BASEBOARD_PRODUCT: X10DRH-C

BASEBOARD_VERSION: 1.01

DUMP_TYPE: 2

BUGCHECK_P1: 11

BUGCHECK_P2: 263077

BUGCHECK_P3: 1007

BUGCHECK_P4: ffffe80005646eb0

BUGCHECK_STR: 0x20001_11_263077

CPU_COUNT: 28

CPU_MHZ: 960

CPU_VENDOR: GenuineIntel

CPU_FAMILY: 6

CPU_MODEL: 4f

CPU_STEPPING: 1

CPU_MICROCODE: 6,4f,1,0 (F,M,S,R) SIG: B000010'00000000 (cache) B000010'00000000 (init)

CUSTOMER_CRASH_COUNT: 1

DEFAULT_BUCKET_ID: WIN8_DRIVER_FAULT_SERVER

PROCESS_NAME: System

CURRENT_IRQL: f

ANALYSIS_SESSION_HOST: UNION-HYPERV-1

ANALYSIS_SESSION_TIME: 09-19-2019 09:42:37.0059

ANALYSIS_VERSION: 10.0.18362.1 amd64fre

LAST_CONTROL_TRANSFER: from fffff8004cfbbad0 to fffff8004cf583a0

STACK_TEXT:
fffff800`4e777c98 fffff800`4cfbbad0 : 00000000`00020001 00000000`00000011 00000000`00263077 00000000`00001007 : nt!KeBugCheckEx
fffff800`4e777ca0 fffff800`4cfcaa27 : ffffe000`063e3248 ffffe000`069d0c10 ffffe000`15e4ab60 fffff800`4cfd5ed7 : nt!HvlNmiCallbackRoutine+0x54
fffff800`4e777ce0 fffff800`4cf63502 : 00000000`00000000 fffff800`4e777ef0 00000000`00000000 00000000`00000000 : nt!KiProcessNMI+0x177
fffff800`4e777d30 fffff800`4cf63330 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KxNmiInterrupt+0x82
fffff800`4e777e70 fffff800`0daaa170 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiNmiInterrupt+0x1b0
fffff800`4e765328 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : NDIS!ndisPcwGetCpu


THREAD_SHA1_HASH_MOD_FUNC: 222127ed35c4cd87155399113567537dae998ed3

THREAD_SHA1_HASH_MOD_FUNC_OFFSET: 7dbd7032eaa1a8049ab83449fa9d4a1ee45cc7f9

THREAD_SHA1_HASH_MOD: 1e5ee3a41ccc2c935b1787158ed8bdb5c911fa8a

FOLLOWUP_IP:
nt!HvlNmiCallbackRoutine+54
fffff800`4cfbbad0 cc int 3

FAULT_INSTR_CODE: 48c032cc

SYMBOL_STACK_INDEX: 1

SYMBOL_NAME: nt!HvlNmiCallbackRoutine+54

FOLLOWUP_NAME: MachineOwner

MODULE_NAME: nt

IMAGE_NAME: ntkrnlmp.exe

DEBUG_FLR_IMAGE_TIMESTAMP: 5d670f6f

IMAGE_VERSION: 6.3.9600.19464

STACK_COMMAND: .thread ; .cxr ; kb

BUCKET_ID_FUNC_OFFSET: 54

FAILURE_BUCKET_ID: 0x20001_11_263077_nt!HvlNmiCallbackRoutine

BUCKET_ID: 0x20001_11_263077_nt!HvlNmiCallbackRoutine

PRIMARY_PROBLEM_CLASS: 0x20001_11_263077_nt!HvlNmiCallbackRoutine

TARGET_TIME: 2019-09-18T18:27:24.000Z

OSBUILD: 9600

OSSERVICEPACK: 19464

SERVICEPACK_NUMBER: 0

OS_REVISION: 0

SUITE_MASK: 272

PRODUCT_TYPE: 3

OSPLATFORM_TYPE: x64

OSNAME: Windows 8.1

OSEDITION: Windows 8.1 Server TerminalServer SingleUserTS

OS_LOCALE:

USER_LCID: 0

OSBUILD_TIMESTAMP: 2019-08-28 19:34:07

BUILDDATESTAMP_STR: 190828-1437

BUILDLAB_STR: winblue_ltsb_escrow

BUILDOSVER_STR: 6.3.9600.19464.amd64fre.winblue_ltsb_escrow.190828-1437

ANALYSIS_SESSION_ELAPSED_TIME: 705

ANALYSIS_SOURCE: KM

FAILURE_ID_HASH_STRING: km:0x20001_11_263077_nt!hvlnmicallbackroutine

FAILURE_ID_HASH: {0dd695c8-b3a9-9107-5de3-eecf3050702e}

Followup: MachineOwner
---------

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