格式化硬盘，重装系统，装完后利马打补丁，装杀病毒软件，打杜绝3721等流氓程序的补丁。记住这些工作做完之前不要插网线。以下东西千万不能装，如果装了，只能说以后再发生问题，会很麻烦

1。3721网络实名
2。各类上网助手
3。百度搜索插件
4。优化大师
5。2.9版以后的超级兔子
6。不知名的免费软件（网络方面的）

把以下内容拷贝复制到记事本，保存为 delliumang.reg 完后双击，确定。就可以预防这些流氓程序了。

REGEDIT4

#B83FC273-3522-4CC6-92EC-75CC86678DA4 /3721网络实名
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{B83FC273-3522-4CC6-92EC-75CC86678DA4}]
"Compatibility Flags"=dword:00000400

#1B0E7716-898E-48CC-9690-4E338E8DE1D3 /3721上网助手
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{1B0E7716-898E-48CC-9690-4E338E8DE1D3}]
"Compatibility Flags"=dword:00000400

#7CA83CF1-3AEA-42D0-A4E3-1594FC6E48B2 /3721上网助手
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{7CA83CF1-3AEA-42D0-A4E3-1594FC6E48B2}]
"Compatibility Flags"=dword:00000400

#4EDBBAEA-F509-49F6-94D1-ECEC4BE5B686 /3721中文邮
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{4EDBBAEA-F509-49F6-94D1-ECEC4BE5B686}]
"Compatibility Flags"=dword:00000400

#9BBC1154-218D-453C-97F6-A06582224D81 /百度搜霸
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{9BBC1154-218D-453C-97F6-A06582224D81}]
"Compatibility Flags"=dword:00000400

#BC207F7D-3E63-4ACA-99B5-FB5F8428200C /百度搜索伴侣
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{BC207F7D-3E63-4ACA-99B5-FB5F8428200C}]
"Compatibility Flags"=dword:00000400

#9A578C98-3C2F-4630-890B-FC04196EF420 /CNNIC通用域名
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{9A578C98-3C2F-4630-890B-FC04196EF420}]
"Compatibility Flags"=dword:00000400

#CF051549-EDE1-40F5-B440-BCD646CF2C25 /网易泡泡
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{CF051549-EDE1-40F5-B440-BCD646CF2C25}]
"Compatibility Flags"=dword:00000400

#15DDE989-CD45-4561-BF99-D22C0D5C2B74 /新浪点点通
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{15DDE989-CD45-4561-BF99-D22C0D5C2B74}]
"Compatibility Flags"=dword:00000400

#98FA5667-513F-4F15-8A15-C171477B8847 /新浪IE通
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{98FA5667-513F-4F15-8A15-C171477B8847}]
"Compatibility Flags"=dword:00000400

#2D0C7226-747E-11D6-83F0-00E04C4A2F90 /搜狐视频播放器
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{2D0C7226-747E-11D6-83F0-00E04C4A2F90}]
"Compatibility Flags"=dword:00000400

#CE7C3CF0-4B15-11D1-ABED-709549C10000 /搜狐搜索工具
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{CE7C3CF0-4B15-11D1-ABED-709549C10000}]
"Compatibility Flags"=dword:00000400

#018B7EC3-EECA-11D3-8E71-0000E82C6C0D /XXXToolbar
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{018B7EC3-EECA-11D3-8E71-0000E82C6C0D}]
"Compatibility Flags"=dword:00000400

#E8EDB60C-951E-4130-93DC-FAF1AD25F8E7 /Mtree Dialers
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{E8EDB60C-951E-4130-93DC-FAF1AD25F8E7}]
"Compatibility Flags"=dword:00000400

#FC87A650-207D-4392-A6A1-82ADBC56FA64 /Mtree Dialers
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{FC87A650-207D-4392-A6A1-82ADBC56FA64}]
"Compatibility Flags"=dword:00000400