program modification: sometimes, not only virus trojan:win32/delf.eh or malware passwordresetter but also common softwares possessing the ability to modify the inner functions of imepadsv.exe, which means other programs can't find this dll file again.

This is all lower case. Can you fix that?
Program Modification: Sometimes, not only virus Trojan:Win32/Delf.EH or malware PasswordResetter but also common softwares possessing the ability to modify the inner functions of IMEPADSV.EXE, which means other programs can't find this DLL file again.