copy /y %windir%\repair\autoexec.nt %windir%\system32
attrib +r %windir%\system32\autoexec.nt
copy /y %windir%\repair\config.nt %windir%\system32
attrib +r %windir%\system32\config.nt

REM  %windir%  is an environment variable which typically is  c:\windows
REM  attrib +r  sets the file attribute to read-only