文件损坏怎么修复啊

打开记事本，新建个空白文件，另存到WINDOWS\System32\DRIVERS\etc\hosts，文件名也叫hosts，但记得别带后缀就可以了。如果你要原文件

# 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

这些内容复制进去并保存就可以了。。如果是win7注意权限问题。