来源：http://answers.microsoft.com/zh-hans/windows/forum/windows_xp-windows_programs/windows-7%E7%9A%84search/71cde1da-f3fb-4311-b5ca-385fdc8d5cb5
步骤一：请您在“开始”菜单的搜索框中输入“regedit”并按回车，如果弹出用户账户控制窗口，请点击“继续”。在左半边页面右击“计算机”，选择“导出”，然后将其保存与桌面上。这是我们备份下来的注册表，如果我们在操作中发生什么错误的话，我们可以双击导入来恢复成原来的注册表。
步骤二：请您新建一个记事本文件并保存于桌面，然后将以下蓝色文字复制粘贴进去
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WSearch]
"DisplayName"="@%systemroot%\\system32\\SearchIndexer.exe,-103"
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):25,00,73,00,79,00,73,00,74,00,65,00,6d,00,72,00,6f,00,6f,00,\
74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,53,\
00,65,00,61,00,72,00,63,00,68,00,49,00,6e,00,64,00,65,00,78,00,65,00,72,00,\
2e,00,65,00,78,00,65,00,20,00,2f,00,45,00,6d,00,62,00,65,00,64,00,64,00,69,\
00,6e,00,67,00,00,00
"Start"=dword:00000002
"Type"=dword:00000010
"Description"="@%systemroot%\\system32\\SearchIndexer.exe,-104"
"DependOnService"=hex(7):52,00,50,00,43,00,53,00,53,00,00,00,00,00
"ObjectName"="LocalSystem"
"ServiceSidType"=dword:00000001
"RequiredPrivileges"=hex(7):53,00,65,00,43,00,68,00,61,00,6e,00,67,00,65,00,4e,\
00,6f,00,74,00,69,00,66,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,\
67,00,65,00,00,00,53,00,65,00,4d,00,61,00,6e,00,61,00,67,00,65,00,56,00,6f,\
00,6c,00,75,00,6d,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,\
65,00,00,00,53,00,65,00,49,00,6d,00,70,00,65,00,72,00,73,00,6f,00,6e,00,61,\
00,74,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,\
53,00,65,00,41,00,73,00,73,00,69,00,67,00,6e,00,50,00,72,00,69,00,6d,00,61,\
00,72,00,79,00,54,00,6f,00,6b,00,65,00,6e,00,50,00,72,00,69,00,76,00,69,00,\
6c,00,65,00,67,00,65,00,00,00,53,00,65,00,49,00,6e,00,63,00,72,00,65,00,61,\
00,73,00,65,00,51,00,75,00,6f,00,74,00,61,00,50,00,72,00,69,00,76,00,69,00,\
6c,00,65,00,67,00,65,00,00,00,53,00,65,00,54,00,63,00,62,00,50,00,72,00,69,\
00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,00,00
"FailureActionsOnNonCrashFailures"=dword:00000001
"DelayedAutoStart"=dword:00000001
"FailureActions"=hex:80,51,01,00,00,00,00,00,00,00,00,00,03,00,00,00,14,00,00,\
00,01,00,00,00,30,75,00,00,01,00,00,00,30,75,00,00,00,00,00,00,00,00,00,00
步骤三：保存完后，请您将其重命名为“WSearch.reg”，然后双击导入。
步骤四：成功导入注册表后，请您启动Windows Search服务看看。问题是否还出现？