sudden restart

[jj55]

Hello forum

environment :
=============
2 host DL 380 G7 servers win 2008 R2 ,with failover clustering
Hyper V
Problem :
=========
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

System

- Provider

[ Name] Microsoft-Windows-Kernel-Power
[ Guid] {331C3B3A-2005-44C2-AC5E-77220C37D6B4}

EventID 41

Version 2

Level 1

Task 63

Opcode 0

Keywords 0x8000000000000002

- TimeCreated

[ SystemTime] 2010-08-17T06:22:45.083211600Z

EventRecordID 4132

Correlation

- Execution

[ ProcessID] 4
[ ThreadID] 8

Channel System

Security

[ UserID] S-1-5-18


- EventData

BugcheckCode 0
BugcheckParameter1 0x0
BugcheckParameter2 0x0
BugcheckParameter3 0x0
BugcheckParameter4 0x0
SleepInProgress false
PowerButtonTimestamp 0

your kind support and help is appreciated
Regards