Windows 2008 Server R2 自行关闭

Question

我有一台可以自行关闭的 Windows 2008 R2 服务器。它看起来不像是硬件问题，因为我可以在日志中看到所有服务是如何停止的以及之后：

Log Name:      System
Source:        Microsoft-Windows-Kernel-Power
Date:          28/12/2011 01:19:49
Event ID:      109
Task Category: (103)
Level:         Information
Keywords:      (4)
User:          N/A
Description:
The kernel power manager has initiated a shutdown transition.

和：

Log Name:      System
Source:        Microsoft-Windows-Kernel-General
Date:          28/12/2011 01:19:50
Event ID:      13
Task Category: None
Level:         Information
Keywords:      
User:          N/A
Description:
The operating system is shutting down at system time ?2011?-?12?-?28T01:19:50.956025700Z.

可能是什么问题呢？

更新：

没有UPS。它不是虚拟机。

我现在已经从“平衡”切换到“高性能”，看看会发生什么。

这是事件序列：

Information 28/12/2011 01:19:50 Kernel-General  13  None
Information 28/12/2011 01:19:49 Kernel-Power    109 (103)
Information 28/12/2011 01:19:49 Service Control Manager 7036    None
Information 28/12/2011 01:19:48 Service Control Manager 7036    None
Information 28/12/2011 01:19:48 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:47 Service Control Manager 7036    None
Information 28/12/2011 01:19:46 Service Control Manager 7036    None
Information 28/12/2011 01:19:46 Service Control Manager 7036    None
Information 28/12/2011 01:19:46 Service Control Manager 7036    None
Information 28/12/2011 01:19:46 Service Control Manager 7036    None
Information 28/12/2011 01:19:46 Service Control Manager 7036    None
Information 28/12/2011 01:19:46 Service Control Manager 7036    None
Information 28/12/2011 01:19:46 UserPnp 20010   (7010)

在 UserPnP 事件之前，有一个 4 小时前的事件。所有那些“7036”都是“XXX服务进入停止状态”

可能它不能解释任何事情，但这是 UserPnp 事件：

Log Name:      System
Source:        Microsoft-Windows-UserPnp
Date:          28/12/2011 01:19:46
Event ID:      20010
Task Category: (7010)
Level:         Information
Keywords:      
User:          SYSTEM
Description:
One or more of the Plug and Play service's subsystems has changed state. 

PlugPlay install subsystem enabled: 'false' 
PlugPlay caching subsystem enabled: 'false' 

Answer 1

通常这是由于自动更新造成的。109 和 13 事件 ID 都可以指示重新启动。在事件日志中查找更新消息WindowsUpdateClient，例如：

...

此外，如果有人按下电源按钮，许多系统都可以正常关闭。