我正在为一个学校项目制作一个网站。下载了 Visual Studio 2010（我们在学校的版本），现在我正在尝试在它上面运行我的网站。SQL 将无法连接。我尝试了我所知道的一切，没有任何效果。当尝试在 SQL Server Management Studio 中连接时，它为我的用户提供了“登录失败”。顺便说一句，我正在尝试 Windows 身份验证尝试查看 SQL 错误日志，但没有！
我变得非常沮丧，我在网上看到的每个答案都提到了我不理解的真实网站和术语。我只是想让我的数据库正常工作！请，请帮助。
不知道该怎么办。
编辑：好的找到日志！它在一个文件夹中，然后提到的有点不同。我认为这是问题所在：编辑：尝试了建议的几个步骤。服务器现在（我认为）处于单用户模式。仍然无法登录但不同的问题 - 这是日志。
2013-05-26 19:14:03.97 Server Microsoft SQL Server 2008 R2 (SP2) - 10.50.4000.0 (X64)
Jun 28 2012 08:36:30
Copyright (c) Microsoft Corporation
Express Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: )
2013-05-26 19:14:03.97 Server (c) Microsoft Corporation.
2013-05-26 19:14:03.97 Server All rights reserved.
2013-05-26 19:14:03.97 Server Server process ID is 2968.
2013-05-26 19:14:03.97 Server Authentication mode is MIXED.
2013-05-26 19:14:03.97 Server Logging SQL Server messages in file 'c:\Program Files\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQL\Log\ERRORLOG'.
2013-05-26 19:14:03.97 Server This instance of SQL Server last reported using a process ID of 4068 at 26/05/2013 19:11:31 (local) 26/05/2013 16:11:31 (UTC). This is an informational message only; no user action is required.
2013-05-26 19:14:03.97 Server Registry startup parameters:
-d c:\Program Files\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQL\DATA\master.mdf
-e c:\Program Files\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQL\Log\ERRORLOG
-l c:\Program Files\Microsoft SQL Server\MSSQL10_50.SQLEXPRESS\MSSQL\DATA\mastlog.ldf
-m
2013-05-26 19:14:03.99 Server SQL Server is starting at normal priority base (=7). This is an informational message only. No user action is required.
2013-05-26 19:14:03.99 Server Detected 4 CPUs. This is an informational message; no user action is required.
2013-05-26 19:14:04.00 Server Perfmon counters for resource governor pools and groups failed to initialize and are disabled.
2013-05-26 19:14:04.00 Server 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.
2013-05-26 19:14:04.01 Server Node configuration: node 0: CPU mask: 0x000000000000000f:0 Active CPU mask: 0x000000000000000f:0. This message provides a description of the NUMA configuration for this computer. This is an informational message only. No user action is required.
2013-05-26 19:14:04.02 Server Database Mirroring Transport is disabled in the endpoint configuration.
2013-05-26 19:14:04.02 spid6s Warning ******************
2013-05-26 19:14:04.02 spid6s SQL Server started in single-user mode. This an informational message only. No user action is required.
2013-05-26 19:14:04.02 spid6s Starting up database 'master'.
2013-05-26 19:14:04.10 spid6s Recovery is writing a checkpoint in database 'master' (1). This is an informational message only. No user action is required.
2013-05-26 19:14:04.14 spid6s FILESTREAM: effective level = 0, configured level = 0, file system access share name = 'SQLEXPRESS'.
2013-05-26 19:14:04.15 spid6s SQL Trace ID 1 was started by login "sa".
2013-05-26 19:14:04.15 spid6s Starting up database 'mssqlsystemresource'.
2013-05-26 19:14:04.19 spid6s The resource database build version is 10.50.4000. This is an informational message only. No user action is required.
2013-05-26 19:14:04.28 spid9s Starting up database 'model'.
2013-05-26 19:14:04.28 spid6s Server name is 'NETA\SQLEXPRESS'. This is an informational message only. No user action is required.
2013-05-26 19:14:04.28 spid6s Informational: No full-text supported languages found.
2013-05-26 19:14:04.28 spid6s Starting up database 'msdb'.
2013-05-26 19:14:04.39 Server A self-generated certificate was successfully loaded for encryption.
2013-05-26 19:14:04.39 Server Server local connection provider is ready to accept connection on [ \\.\pipe\SQLLocal\SQLEXPRESS ].
2013-05-26 19:14:04.39 Server Server local connection provider is ready to accept connection on [ \\.\pipe\MSSQL$SQLEXPRESS\sql\query ].
2013-05-26 19:14:04.39 Server Dedicated administrator connection support was not started because it is disabled on this edition of SQL Server. If you want to use a dedicated administrator connection, restart SQL Server using the trace flag 7806. This is an informational message only. No user action is required.
2013-05-26 19:14:04.39 Server The SQL Server Network Interface library could not register the Service Principal Name (SPN) for the SQL Server service. Error: 0x54b, state: 3. Failure to register an SPN may cause integrated authentication to fall back to NTLM instead of Kerberos. This is an informational message. Further action is only required if Kerberos authentication is required by authentication policies.
2013-05-26 19:14:04.39 Server SQL Server is now ready for client connections. This is an informational message; no user action is required.
2013-05-26 19:14:04.50 spid9s Clearing tempdb database.
2013-05-26 19:14:04.74 spid9s Starting up database 'tempdb'.
2013-05-26 19:14:04.80 spid6s Recovery is complete. This is an informational message only. No user action is required.
2013-05-26 19:14:14.60 Logon Error: 18456, Severity: 14, State: 11.
2013-05-26 19:14:14.60 Logon Login failed for user 'Neta\Neta'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors. [CLIENT: <local machine>]