sql2012版官网下载的求密钥

Microsoft® SQL Server® 2008 R2 SP2 - Express Edition版官网下载的求密钥，度娘很多都没成功。。。

日志文件：——————————————————————————
2015-12-03 19:11:14.87 Server Authentication mode is MIXED.
2015-12-03 19:11:14.87 Server Logging SQL Server messages in file 'C:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\Log\ERRORLOG'.
2015-12-03 19:11:14.87 Server The service account is 'NT Service\MSSQL$SQLEXPRESS'. This is an informational message; no user action is required.
2015-12-03 19:11:14.87 Server Registry startup parameters:
-d C:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\DATA\master.mdf
-e C:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\Log\ERRORLOG
-l C:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\DATA\mastlog.ldf
2015-12-03 19:11:14.87 Server Command Line Startup Parameters:
-s "SQLEXPRESS"
2015-12-03 19:11:16.49 Server SQL Server detected 1 sockets with 4 cores per socket and 4 logical processors per socket, 4 total logical processors; using 4 logical processors based on SQL Server licensing. This is an informational message; no user action is required.
2015-12-03 19:11:16.49 Server SQL Server is starting at normal priority base (=7). This is an informational message only. No user action is required.
2015-12-03 19:11:16.49 Server Detected 5609 MB of RAM. This is an informational message; no user action is required.
2015-12-03 19:11:16.50 Server Using conventional memory in the memory manager.
2015-12-03 19:11:18.25 Server This instance of SQL Server last reported using a process ID of 2440 at 2015/12/1 22:34:00 (local) 2015/12/1 14:34:00 (UTC). This is an informational message only; no user action is required.
2015-12-03 19:11:18.26 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.
2015-12-03 19:11:18.27 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.
2015-12-03 19:11:18.30 Server Software Usage Metrics is disabled.
2015-12-03 19:11:18.52 spid2s Starting up database 'master'.
2015-12-03 19:11:18.99 Server CLR version v4.0.30319 loaded.
2015-12-03 19:11:20.55 spid2s SQL Server Audit is starting the audits. This is an informational message. No user action is required.
2015-12-03 19:11:20.59 spid2s SQL Server Audit has started the audits. This is an informational message. No user action is required.
2015-12-03 19:11:21.40 spid2s SQL Trace ID 1 was started by login "sa".
2015-12-03 19:11:21.77 spid2s Server name is 'HP-PC\SQLEXPRESS'. This is an informational message only. No user action is required.
2015-12-03 19:11:22.18 spid2s Failed to verify Authenticode signature on DLL 'C:\Program Files\Microsoft SQL Server\MSSQL11.SQLEXPRESS\MSSQL\Binn\ftimport.dll'.
2015-12-03 19:11:22.39 spid2s Starting up database 'msdb'.
2015-12-03 19:11:22.39 spid9s Starting up database 'mssqlsystemresource'.
2015-12-03 19:11:22.51 spid9s The resource database build version is 11.00.5058. This is an informational message only. No user action is required.
2015-12-03 19:11:22.53 spid12s A self-generated certificate was successfully loaded for encryption.
2015-12-03 19:11:22.73 spid12s Server local connection provider is ready to accept connection on [ \.\pipe\SQLLocal\SQLEXPRESS ].
2015-12-03 19:11:22.73 spid12s Server local connection provider is ready to accept connection on [ \.\pipe\MSSQL$SQLEXPRESS\sql\query ].
2015-12-03 19:11:22.81 spid12s 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.
2015-12-03 19:11:23.22 spid9s Starting up database 'model'.
2015-12-03 19:11:23.24 spid12s SQL Server is now ready for client connections. This is an informational message; no user action is required.
2015-12-03 19:11:23.24 Server SQL Server is attempting to register a Service Principal Name (SPN) for the SQL Server service. Kerberos authentication will not be possible until a SPN is registered for the SQL Server service. This is an informational message. No user action is required.
2015-12-03 19:11:23.24 Server The SQL Server Network Interface library could not register the Service Principal Name (SPN) [ MSSQLSvc/hp-PC:SQLEXPRESS ] for the SQL Server service. Windows return code: 0xffffffff, state: 63. Failure to register a SPN might cause integrated authentication to use NTLM instead of Kerberos. This is an informational message. Further action is only required if Kerberos authentication is required by authentication policies and if the SPN has not been manually registered.
2015-12-03 19:11:24.01 spid9s Clearing tempdb database.
2015-12-03 19:11:25.91 spid9s Starting up database 'tempdb'.
2015-12-03 19:11:26.16 Server Common language runtime (CLR) functionality initialized using CLR version v4.0.30319 from C:\Windows\Microsoft.NET\Framework64\v4.0.30319.
2015-12-03 19:11:26.41 spid15s The Service Broker endpoint is in disabled or stopped state.
2015-12-03 19:11:26.43 spid15s The Database Mirroring endpoint is in disabled or stopped state.
2015-12-03 19:11:26.65 spid15s Service Broker manager has started.
2015-12-03 19:11:26.65 spid2s Recovery is complete. This is an informational message only. No user action is required.

express版本是免费的，并不需要什么密钥。

可是启动sql server服务的时候打不开，日志文件说，密钥没有，可能是日志文件我看错了，晚上我把日志文件贴出来帮我看看，谢了

可能是你系统禁用了服务账户，或者是防火墙阻止了程序。

账户打开了，也没用，08版的12版通通卸载在装一次了