概述：
不知道又没有人碰到或者有人咨询你一个问题就是，笔记本有网络就是不能访问百度、等各搜索引擎工具，这给我们使用电脑带来非常糟糕的体验，每一个用电脑的人想必都会使用的搜索引擎吧。
解决办法：
资源管理输入： C:\Windows\System32\drivers\etc
在hosts下添加如下命令，可直接复制过去覆盖使用。就可以访问百度等等网页了。
# Copyright (c) 1993-2009 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
# localhost name resolution is handled within DNS itself.
# 127.0.0.1 localhost
# ::1 localhost
202.108.22.5 www.baidu.com
202.108.22.5 tieba.baidu.com
202.108.22.5 hi.baidu.com
202.108.22.5 mp3.baidu.com
202.108.22.5 image.baidu.com
202.108.22.5 news.baidu.com
202.108.22.5 zhidao.baidu.com
202.108.22.5 video.baidu.com
36.110.165.43 www.sogou.com
36.110.236.68 hao.360.com