Windows 7 User Accounts Panel Error

While attempting to open "Add or remove users" in the User Accounts Panel,
I receive an error that windows cannot find.

While attempting to open "Add or remove users" in the User Accounts Panel,
I receive an error that windows cannot find.
Maybe your error message should be
"Windows cannot find C:WindowsRundll32.exe make sure you typed the name correctly and try again."
It is because sometimes a file named Rundll32.exe becomes corrupted or missing. Have you deleted any file of drive C: (It is not mandatory, I mean where you have installed windows)?
Go to Start menu > All programs > Accessories > Run and type this command:
regsvr32.exe jscript.dll
Then, type two more commands:
regsvr32.exe nusrmgr.cpl
regsvr32.exe shgina.dll
After running these commands you will see a message "DllRegisterServer in filename succeeded."
Then restart computer.