方法1:打开“注册表编辑器”，找到[HKEY_LOCAL_ MACHINE＼SOFTWARE＼Microsoft＼Active Setup＼Installed Components＼{89820200-ECBD-11cf-8B85-00AA005B4383}]，将IsInstalled的DWORD值改为0就可以了.                                                                  

方法2:放入Windows XP安装盘，在“开始→运行”窗口键入运行"rundll32.exe setupapi,InstallHinfSection DefaultInstall 132 %windir%\Inf\ie.inf"上面命令,然后提示插入XP系统盘.然后点击浏览,找到光驱里的I386文件夹,然后点打开,最后点确定.重装IE