sql2008安装成功后，一起始是可以用的，可是后来不知怎么服务器启动不了
提示如下：
请求失败或服务未及时响应，有关详细信息，请参见事件日志或其他适用的错误日志（附图）
以下是错误日志文件内容
2011-04-12 20:08:11.48 Server Microsoft SQL Server 2008 (SP2) - 10.0.4000.0 (Intel X86)
Sep 16 2010 20:09:22
Copyright (c) 1988-2008 Microsoft Corporation
Express Edition on Windows NT 5.1 <X86> (Build 2600: Service Pack 3)
2011-04-12 20:08:11.48 Server (c) 2005 Microsoft Corporation.
2011-04-12 20:08:11.48 Server All rights reserved.
2011-04-12 20:08:11.48 Server Server process ID is 3124.
2011-04-12 20:08:11.48 Server Authentication mode is WINDOWS-ONLY.
2011-04-12 20:08:11.48 Server Logging SQL Server messages in file 'C:\Program Files\Microsoft SQL Server2008\MSSQL10.MSSQLSERVER\MSSQL\Log\ERRORLOG'.
2011-04-12 20:08:11.48 Server This instance of SQL Server last reported using a process ID of 136 at 2011-4-12 19:38:04 (local) 2011-4-12 11:38:04 (UTC). This is an informational message only; no user action is required.
2011-04-12 20:08:11.48 Server Registry startup parameters:
-d C:\Program Files\Microsoft SQL Server2008\MSSQL10.MSSQLSERVER\MSSQL\DATA\master.mdf
-e C:\Program Files\Microsoft SQL Server2008\MSSQL10.MSSQLSERVER\MSSQL\Log\ERRORLOG
-l C:\Program Files\Microsoft SQL Server2008\MSSQL10.MSSQLSERVER\MSSQL\DATA\mastlog.ldf
2011-04-12 20:08:11.49 服务器 SQL Server is starting at normal priority base (=7). This is an informational message only. No user action is required.
2011-04-12 20:08:11.49 服务器 Detected 2 CPUs. This is an informational message; no user action is required.
2011-04-12 20:08:12.05 服务器 Using dynamic lock allocation. Initial allocation of 2500 Lock blocks and 5000 Lock Owner blocks per node. This is an informational message only. No user action is required.
2011-04-12 20:08:12.12 服务器 Node configuration: node 0: CPU mask: 0x00000003 Active CPU mask: 0x00000003. This message provides a description of the NUMA configuration for this computer. This is an informational message only. No user action is required.
2011-04-12 20:08:12.14 spid7s Starting up database 'master'.
2011-04-12 20:08:12.27 spid7s FILESTREAM: effective level = 0, configured level = 0, file system access share name = 'MSSQLSERVER'.
2011-04-12 20:08:12.29 spid7s SQL Trace ID 1 was started by login "sa".
2011-04-12 20:08:12.29 spid7s Starting up database 'mssqlsystemresource'.
2011-04-12 20:08:12.30 spid7s The resource database build version is 10.00.4000. This is an informational message only. No user action is required.