我家的IE就是不能改回hao123

是不是在HOSTS中被屏蔽了？这个文件在C:\WINDOWS\system32\drivers\etc文件夹下，可以直接用记事本打开的，你去看一下这个文件里的内容，正常的话应该是这样的：
# Copyright (c) 1993-1999 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
# 102.54.94.97 rhino.acme.com # source server
# 38.25.63.10 x.acme.com # x client host

127.0.0.1 localhost

在安全模式下杀。。别用金山，它烂的很，要用瑞星。

用卡巴+安全360卫士

在进程里结束下 或者是安全模