记事本中写下面的内容，保存为.bat。 ======就是下面的文字(这行不用复制)=============================

@echo off
echo 正在清除系统垃圾文件，请稍等......
del /f /s /q %systemdrive%/*.tmp
del /f /s /q %systemdrive%/*._mp
del /f /s /q %systemdrive%/*.log
del /f /s /q %systemdrive%/*.gid
del /f /s /q %systemdrive%/*.chk
del /f /s /q %systemdrive%/*.old
del /f /s /q %systemdrive%/recycled/*.*
del /f /s /q %windir%/*.bak
del /f /s /q %windir%/prefetch/*.*
rd /s /q %windir%/temp & md %windir%/temp
del /f /q %userprofile%/cookies/*.*
del /f /q %userprofile%/recent/*.*
del /f /s /q "%userprofile%/Local Settings/Temporary Internet Files/*.*"
del /f /s /q "%userprofile%/Local Settings/Temp/*.*"
del /f /s /q "%userprofile%/recent/*.*"
echo 清除系统LJ完成！
echo. & pause

=====到这里为止(这行不用复制)==============================================