First of all, if it was installed before, it should be deleted. I also searched for Internet information for a long time. 1. Install the original SQL Server in C: \ program files \ Microsoft SQL server Delete 2. Delete all SQL Server related registries to ensure that the system is in a state where SQL server is not installed. Registry opening method: Start — & amp; gt; Run — & amp; gt; Regedit and then find the following directory to delete 1).hkey_ current_ user\software\miocrosoft\MICROSOFT SQL Server folder deletion 2).hkey_ current_ user\software\miocrosoft\mssqlserver Folder deletion 3).HKEY_ LOCAL_ MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server Folder deletion in a word, delete all sqlserver related folders. Then restart the machine and start loading.
29. Jump out of a prompt and choose yes.