我的系統重裝以前的d:/盤裝有sqlserver，后重裝里系統后，原來裝在d:/下的sql服務卻啟動不起來了，沒有找到sqlserver的安裝光盤，于是我就嘗試能不能手動恢復sql服務。

我做了以下嘗試：

（1）。直接運行D:/PRogram Files/Microsoft SQL Server/MSSQL/Binn下的sqlservr.exe，發現他有一個參數：/c
作為一個服務運行，運行后的確可以通過企業管理器找到sqlserver，但是不方便，因為要啟動sqlserver就必須多運行一個dos界面的窗口，我想把它作為一個后臺服務運行。

（2）。通過注冊表添加sqlserver后臺服務：
找到HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/，下面就是系統中的所有的服務了，添加一個項：MSSQLSERVER，添加以下的健值：
"Type"=dWord:00000010
"Start"=dword:00000002
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):64,00,3a,00,5c,00,50,00,52,00,4f,00,47,00,52,00,41,00,7e,00,/
  31,00,5c,00,4d,00,53,00,53,00,51,00,4c,00,5c,00,62,00,69,00,6e,00,6e,00,5c,/
  00,73,00,71,00,6c,00,73,00,65,00,72,00,76,00,72,00,2e,00,65,00,78,00,65,00,/
  00,00
"DisplayName"="MSSQLSERVER"
"ObjectName"="LocalSystem"
其中的ImagesPath的健值也可以是字符串值：D:/Program Files/Microsoft SQL Server/MSSQL/Binn/sqlservr.exe
其中D:/Program Files/Microsoft SQL Server為你的sqlserver的目錄，

然后此項下添加子項：
Linkage
Performance
Security
Enum

重啟電腦在服務中就會添加MSSQLSERVER服務

然后，通過mmc新建一個管理單元，把此服務添加進去。
sqlserver 服務管理器也會檢測到并管理sqlserver

其中完整的reg如下，你可以復制下來存成 .reg 文件導入到注冊表中

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/MSSQLSERVER]
"Type"=dword:00000010
"Start"=dword:00000002
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):64,00,3a,00,5c,00,50,00,52,00,4f,00,47,00,52,00,41,00,7e,00,/
  31,00,5c,00,4d,00,53,00,53,00,51,00,4c,00,5c,00,62,00,69,00,6e,00,6e,00,5c,/
  00,73,00,71,00,6c,00,73,00,65,00,72,00,76,00,72,00,2e,00,65,00,78,00,65,00,/
  00,00
"DisplayName"="MSSQLSERVER"
"ObjectName"="LocalSystem"

[HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/MSSQLSERVER/Linkage]
"Export"=hex(7):4d,00,53,00,53,00,51,00,4c,00,53,00,45,00,52,00,56,00,45,00,52,/
  00,00,00,00,00

[HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/MSSQLSERVER/Performance]
"Library"="d://PROGRA~1//MSSQL//BINN//SQLCTR80.DLL"
"Collect"="CollectSQLPerformanceData"
"Open"="OpenSQLPerformanceData"
"Close"="CloseSQLPerformanceData"
"PerfIniFile"="sqlctr.ini"
"Last Counter"=dword:000010c2
"Last Help"=dword:000010c3
"First Counter"=dword:00000fae
"First Help"=dword:00000faf
"WbemAdapFileSignature"=hex:d6,a0,b9,c1,d1,85,78,63,4f,31,8b,f2,18,51,1a,5d
"WbemAdapFileTime"=hex:24,a2,b9,6d,3b,7d,c6,01
"WbemAdapFileSize"=dword:0000803b
"WbemAdapStatus"=dword:00000000

[HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/MSSQLSERVER/Security]
"Security"=hex:01,00,14,80,b8,00,00,00,c4,00,00,00,14,00,00,00,30,00,00,00,02,/
  00,1c,00,01,00,00,00,02,80,14,00,ff,01,0f,00,01,01,00,00,00,00,00,01,00,00,/
  00,00,02,00,88,00,06,00,00,00,00,00,14,00,fd,01,02,00,01,01,00,00,00,00,00,/
  05,12,00,00,00,00,00,18,00,ff,01,0f,00,01,02,00,00,00,00,00,05,20,00,00,00,/
  20,02,00,00,00,00,14,00,8d,01,02,00,01,01,00,00,00,00,00,05,04,00,00,00,00,/
  00,14,00,8d,01,02,00,01,01,00,00,00,00,00,05,06,00,00,00,00,00,14,00,00,01,/
  00,00,01,01,00,00,00,00,00,05,0b,00,00,00,00,00,18,00,fd,01,02,00,01,02,00,/
  00,00,00,00,05,20,00,00,00,23,02,00,00,01,01,00,00,00,00,00,05,12,00,00,00,/
  01,01,00,00,00,00,00,05,12,00,00,00

[HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/MSSQLSERVER/Enum]
"0"="Root//LEGACY_MSSQLSERVER//0000"
"Count"=dword:00000001
"NextInstance"=dword:00000001

導入之前一定要根據自己的機器的SQLserver安裝情況來適當修改才能行。差不多10分鐘就搞定了

http://shengshuai.cnblogs.com/archive/2006/05/27/410996.html