sqlserver 2008安装问题
我是64位的win7旗舰版系统，我是先把visual2010装上了，再装sqlserver2008就这样了。望各位大侠帮忙，不胜感激1！

异常信息如下：
System.Configuration.ConfigurationErrorsException: 创建 userSettings/Microsoft.SqlServer.Configuration.LandingPage.Properties.Settings 的配置节处理程序时出错: 未能加载文件或程序集“System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089”或它的某一个依赖项。系统找不到指定的文件。 (C:\Users\Administrator.ZGC-20110802FFY\AppData\Local\Microsoft_Corporation\LandingPage.exe_StrongName_ryspccglaxmt4nhllj5z3thycltsvyyx\10.0.0.0\user.config line 5) ---> System.IO.FileNotFoundException: 未能加载文件或程序集“System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089”或它的某一个依赖项。系统找不到指定的文件。


找不到的那个指定文件，即user.config那个文件是这样写的：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <configSections>
        <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
            <section name="Microsoft.SqlServer.Configuration.LandingPage.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />
        </sectionGroup>
    </configSections>
    <userSettings>
        <Microsoft.SqlServer.Configuration.LandingPage.Properties.Settings>
            <setting name="WindowPlacement" serializeAs="Xml">
                <value>
                    <WINDOWPLACEMENT xmlns:xsd="http://www.w3.org/2001/XMLSchema"
                        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
                        <showCmd>1</showCmd>
                        <ptMinPosition>
                            <x>-32000</x>
                            <y>-32000</y>
                        </ptMinPosition>
                        <ptMaxPosition>
                            <x>-1</x>
                &nb