SQL Server Setup fails how to do?

The following steps can be basically resolved:
1) Add / Remove Programs in completely remove SQL  Server .
2) will not delete the SQL  Server directory is also deleted.
3) Open the Registry Editor, locate PendingFileRenameOperations project in HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ Session Manager and delete it. This will clear the pending installation project.
4) delete the registry with SQL  Server -related key SQL Server can not be installed, "pending file" install SQL Server  2000 for the development, but each installation prompt "a previous installation has been created to hang on computing meter installation after starting the file operations. You must restart your computer before running Setup. "restart the computer, but did not solve the problem, still suggesting this is the case.
A: First remove your Server SQL  2000 , when necessary, delete the Program Files \\ Microsoft SQL Server folder.
B: Open the Registry, in the "Start" - "Run", type "regedit"; click to open the following order; + HKEY_LOCAL_MACHINE, + SOFTWART, + Microsoft, + Windows, + CurrentVersion, + Setup, + ExceptionComponents, 3 will ExceptionComponents the following folder delete all!, such as {60BFF50D-FB2C-4498-A577 -C9548C390BB9} {60BFF50D-FB2C-4498-A577-C9548C390BB9} {60BFF50D-FB2C-4498-A577-C9548C390BB9} {60BFF50D-FB2C-4498-A577 } -C9548C390BB9
C: first uninstall SQL Server, generated when then install "Microsoft SQL Server" folder deleted, run the registry, the HKEY_CURRENT_USER \\ Software \\ Microsoft \\ Microsoft SQL Server, and HKEY_LOCAL_MACHINE \\ SOFTWARE \\ Microsoft \\ Microsoft SQL Server all deleted, (take note Microsoft SQL Server to delete the entire folder), and then restart.
In fact you can download a small tool hangs clear, more convenient.