SQL Server Database Services安装不起

系统为Windows 2003 ，安装的是SQL2005开发版
总是出现SQL Server 服务无法启动.....
它的日志内容为：

Microsoft SQL Server 2005 9.00.1399.06
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OS Version : Microsoft Windows Server 2003 family, Standard Edition Service Pack 2 (Build 3790)
Time : Wed Oct 07 17:32:39 2009

Machine : YD398UNAWI4GY3I
Product : Microsoft SQL Server 安装程序支持文件(英语)
Product Version : 9.00.1399.06
Install : Successful
Log File : G:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0009_YD398UNAWI4GY3I_SQLSupport_1.log
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Machine : YD398UNAWI4GY3I
Product : Microsoft SQL Server Native Client
Product Version : 9.00.1399.06
Install : Successful
Log File : G:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0009_YD398UNAWI4GY3I_SQLNCLI_1.log
------------
Machine : YD398UNAWI4GY3I
Product : Microsoft Office 2003 Web Components
Product Version : 11.0.6558.0
Install : Successful
Log File : G:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0009_YD398UNAWI4GY3I_OWC11_1.log
------------
Machine : YD398UNAWI4GY3I
Product : Microsoft SQL Server VSS 编写器
Product Version : 9.00.1399.06
Install : Successful
Log File : G:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0009_YD398UNAWI4GY3I_SqlWriter_1.log
-------
Machine : YD398UNAWI4GY3I
Product : Microsoft SQL Server 2005 向后兼容
Product Version : 8.05.1054
Install : Successful
Log File : G:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0009_YD398UNAWI4GY3I_BackwardsCompat_1.log
--------------------------------------------------------------------------------
Machine : YD398UNAWI4GY3I
Product : MSXML 6.0 分析程序
Product Version : 6.00.3883.15
Install : Successful
Log File : G:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0009_YD398UNAWI4GY3I_MSXML6_1.log
--------------------------------------------------------------------------------
Machine : YD398UNAWI4GY3I
Product : SQL Server Database Services
Error : SQL Server 服务无法启动。有关详细信息，请参阅 SQL Server 联机丛书中的主题“如何查看 SQL Server 2005 安装日志文件”和“手动启动 SQL Server”。
--------------------------------------------------------------------------------
Machine : YD398UNAWI4GY3I
Product : Microsoft SQL Server 2005
Product Version : 9.00.1399.06
Install : Failed
Log File : G:\Program Files\Microsoft SQL Server\90\Setup Bootstrap\LOG\Files\SQLSetup0009_YD398UNAWI4GY3I_SQL.log
Last Action : InstallFinalize
Error String :错误 29503
Error Number : 29503

个人猜测你是安装SQL失败过一次，然后再装的。
解决方法是，先卸载SQL，卸载完之后确认服务里面没有MSSQLSERVER，然后再安装！

请问楼主是怎么解决的呢？我现在也遇到这个问题，就sql server database services安装失败了！不知道怎么解决！