1. Go to "Run" and type "regedit" and press enter
2. In the "Registry Editor" window, go to
HKEY_LOCAL_MACHINE -> SOFTWARE -> Microsoft -> Windows NT -> CurrentVersion -> Image File Execution Options -> safari.exe
3. In the right side block, there extra line other than (Default) as
%ProgramFiles%\Internet Explorer\iexplore.exe"
4. Delete the %ProgramFiles%\Internet Explorer\iexplore.exe" and check again.
5. Now safari works fine.