Hi, Panda
According to the attached picture, it seems you are doing a system copy:
SAP NetWeaver 7.4 Support Release 1> MS SQL Server > System cop...
The current situation with empty screen indicates that user database on target system hasn't been created successfully. The correct procedure should be using backup/restore or detach/attach to create the target user database first and then start sapinst to do the post-procedure.
Could you please try the following steps?
1, Close all of the opened sapinst.exe
2, Backup the current sapinst_dir folder and then delete all of the previous system copy files.
3, Delete the database <SID> from the SQL Server management Studio
4, Do the database copy again by backup/restore or detach/attach.
Please do follow SAP Note 151603 carefully.
5, Start sapinst from Scratch.
Best regards
Cherry.