Unfortunately, I have hard deleted the microsoft sql server folder present in program files folder. So now I need to uninstall the MSSQL server from my machine. I have tried but I got an error something like "The source folder is missing". For resolving this issue, I have manually deleted the MS SQL services using "sc delete" command and I have deleted the MSSQL entry from regedit file also. But still MS SQL server entry available in "Programs and Features" list. Please guide me for solving this issue even I can't able to re install the MSSQL server once again. Thank you guys... Gnanasuriyan A.